Zero

misc\DbgUtil.cs (2)

241new HandleRef(null, IntPtr.Zero), 246new HandleRef(null, IntPtr.Zero) );

misc\DpiHelper.cs (1)

misc\GDI\DeviceContext.cs (15)

145if( this.hDC == IntPtr.Zero ) 164Debug.Assert( this.hDC != IntPtr.Zero, "Attempt to use deleted HDC - DC type: " + this.dcType ); 180Debug.Assert(this.hDC != IntPtr.Zero, "Cannot get initial state without a valid HDC"); 190IntPtr handleToDelete = IntPtr.Zero; 196hCurrentPen = IntPtr.Zero; 204hCurrentBrush = IntPtr.Zero; 212hCurrentBmp = IntPtr.Zero; 323Debug.Assert( hdc != IntPtr.Zero, "hdc == 0" ); 388this.hDC = IntPtr.Zero; 400this.hDC = IntPtr.Zero; 431if (this.hDC == IntPtr.Zero) 454if (this.hDC != IntPtr.Zero && this.dcType == DeviceContextType.Display) 464this.hDC = IntPtr.Zero; 620if (wr.HRegion == IntPtr.Zero) { 630Debug.Assert(clip.HRegion != IntPtr.Zero);

misc\GDI\DeviceContext2.cs (5)

190if (font != null && (font.Hfont != IntPtr.Zero)) { 229return DeviceContext.FromHwnd(IntPtr.Zero); 238if (selectedFont != null && selectedFont.Hfont != IntPtr.Zero) { 265return IntPtr.Zero; 290if (result != IntPtr.Zero)

misc\GDI\SafeNativeMethods.cs (4)

66DbgUtil.AssertWin32(hBrush != IntPtr.Zero, "IntCreateSolidBrush(color={0}) failed.", crColor); 80DbgUtil.AssertWin32(hPen != IntPtr.Zero, "IntCreatePen(style={0}, width={1}, color=[{2}]) failed.", fnStyle, nWidth, crColor); 92DbgUtil.AssertWin32(hPen != IntPtr.Zero, "IntExtCreatePen(style={0}, width={1}, brush={2}, styleCount={3}, styles={4}) failed.", fnStyle, dwWidth, lplb, dwStyleCount, lpStyle); 106DbgUtil.AssertWin32(hRgn != IntPtr.Zero, "IntCreateRectRgn([x1={0}, y1={1}, x2={2}, y2={3}]) failed.", x1, y1, x2, y2);

misc\GDI\UnsafeNativeMethods.cs (23)

44DbgUtil.AssertWin32(hdc != IntPtr.Zero, "GetHdc([hWnd=0x{0:X8}]) failed.", hWnd); 87DbgUtil.AssertWin32(hdc != IntPtr.Zero, "CreateDC([driverName={0}], [deviceName={1}], [fileName={2}], [devMode={3}]) failed.", lpszDriverName, lpszDeviceName, lpszOutput, lpInitData.Handle); 101DbgUtil.AssertWin32(hdc != IntPtr.Zero, "CreateIC([driverName={0}], [deviceName={1}], [fileName={2}], [devMode={3}]) failed.", lpszDriverName, lpszDeviceName, lpszOutput, lpInitData.Handle); 117DbgUtil.AssertWin32(compatibleDc != IntPtr.Zero, "CreateCompatibleDC([hdc=0x{0:X8}]) failed", hDC.Handle); 191Debug.Assert(hRgnDest.Wrapper != null && hRgnDest.Handle != IntPtr.Zero, "Destination region is invalid"); 192Debug.Assert(hRgnSrc1.Wrapper != null && hRgnSrc1.Handle != IntPtr.Zero, "Source region 1 is invalid"); 193Debug.Assert(hRgnSrc2.Wrapper != null && hRgnSrc2.Handle != IntPtr.Zero, "Source region 2 is invalid"); 243DbgUtil.AssertWin32(hFont != IntPtr.Zero, "CreateFontIndirect(logFont) failed."); 288DbgUtil.AssertWin32(oldObj != IntPtr.Zero, "SelectObject(hdc=hObj=[0x{0:X8}], hObj=[0x{1:X8}]) failed.", hdc.Handle, obj.Handle); 301DbgUtil.AssertWin32(hGdiObj != IntPtr.Zero, "GetObject(hdc=[0x{0:X8}], type=[{1}]) failed.", hDC, uObjectType ); 313DbgUtil.AssertWin32(hGdiObj != IntPtr.Zero, "GetStockObject({0}) failed.", nIndex ); 387int byteCount = IntUnsafeNativeMethods.WideCharToMultiByte( IntNativeMethods.CP_ACP, 0, text, text.Length, null, 0, IntPtr.Zero, IntPtr.Zero ); 389IntUnsafeNativeMethods.WideCharToMultiByte( IntNativeMethods.CP_ACP, 0, text, text.Length, textBytes, textBytes.Length, IntPtr.Zero, IntPtr.Zero ); 426int byteCount = IntUnsafeNativeMethods.WideCharToMultiByte(IntNativeMethods.CP_ACP, 0, text, text.Length, null, 0, IntPtr.Zero, IntPtr.Zero); 428IntUnsafeNativeMethods.WideCharToMultiByte(IntNativeMethods.CP_ACP, 0, text, text.Length, textBytes, textBytes.Length, IntPtr.Zero, IntPtr.Zero); 461byteCount = IntUnsafeNativeMethods.WideCharToMultiByte(IntNativeMethods.CP_ACP, 0, text, text.Length, null, 0, IntPtr.Zero, IntPtr.Zero); 463IntUnsafeNativeMethods.WideCharToMultiByte(IntNativeMethods.CP_ACP, 0, text, text.Length, textBytes, textBytes.Length, IntPtr.Zero, IntPtr.Zero);

misc\GDI\WindowsBrush.cs (5)

89if (dc != null && this.nativeHandle != IntPtr.Zero) 95this.nativeHandle = IntPtr.Zero; 119if( this.nativeHandle == IntPtr.Zero ) 129Debug.Assert(this.nativeHandle == IntPtr.Zero, "WindowsBrush object is immutable"); 130Debug.Assert(value != IntPtr.Zero, "WARNING: assigning IntPtr.Zero to the nativeHandle object.");

misc\GDI\WindowsFont.cs (4)

70Debug.Assert( hFont == IntPtr.Zero, "hFont is not null, this will generate a handle leak." ); 78if (this.hFont == IntPtr.Zero) 314Debug.Assert( this.hFont != IntPtr.Zero, "Unexpected null hFont." ); 321this.hFont = IntPtr.Zero;

misc\GDI\WindowsGraphics.cs (2)

82DeviceContext dc = DeviceContext.FromCompatibleDC(IntPtr.Zero); 120Debug.Assert( hDc != IntPtr.Zero, "null hDc" );

misc\GDI\WindowsGraphicsCacheManager.cs (1)

162Debug.Assert(WindowsFontCache[index].Value.Hfont != IntPtr.Zero, "Cached WindowsFont was disposed, enable GDI_FINALIZATION_WATCH to track who did it!");

misc\GDI\WindowsPen.cs (3)

157if (this.nativeHandle != IntPtr.Zero && dc != null) 162this.nativeHandle = IntPtr.Zero; 181if( this.nativeHandle == IntPtr.Zero )

misc\GDI\WindowsRegion.cs (5)

78if( hRegion != IntPtr.Zero ) { 134Debug.Assert(nativeHandle == IntPtr.Zero, "nativeHandle should be null, we're leaking handle"); 148if (this.nativeHandle != IntPtr.Zero) { 155this.nativeHandle = IntPtr.Zero; 182return this.nativeHandle == IntPtr.Zero;

misc\GDI\WindowsSolidBrush.cs (1)

36if(nativeHandle == IntPtr.Zero) // Don't use Debug.Assert, DbgUtil.GetLastErrorStr would always be evaluated.

misc\HandleCollector.cs (2)

139if( handle == IntPtr.Zero ) 240if( handle == IntPtr.Zero )

parent\parent\parent\public\Internal\NDP\Inc\CmsInterop.cs (32)

273if (StringIds != IntPtr.Zero) 276StringIds = IntPtr.Zero; 278if (IntegerIds != IntPtr.Zero) 281IntegerIds = IntPtr.Zero; 325if (StringIds != IntPtr.Zero) 328StringIds = IntPtr.Zero; 330if (IntegerIds != IntPtr.Zero) 333IntegerIds = IntPtr.Zero; 377if (ResourceTypeIdInt != IntPtr.Zero) 380ResourceTypeIdInt = IntPtr.Zero; 382if (ResourceTypeIdString != IntPtr.Zero) 385ResourceTypeIdString = IntPtr.Zero; 434if (TransformMetadata != IntPtr.Zero) 437TransformMetadata = IntPtr.Zero; 439if (DigestValue != IntPtr.Zero) 442DigestValue = IntPtr.Zero; 505if (HashValue != IntPtr.Zero) 508HashValue = IntPtr.Zero; 782if (HashValue != IntPtr.Zero) 785HashValue = IntPtr.Zero; 1150if (ManifestHash != IntPtr.Zero) 1153ManifestHash = IntPtr.Zero; 1155if (MvidValue != IntPtr.Zero) 1158MvidValue = IntPtr.Zero; 1371if (SecurityDescriptor != IntPtr.Zero) 1374SecurityDescriptor = IntPtr.Zero; 1376if (Values != IntPtr.Zero) 1379Values = IntPtr.Zero; 1381if (Keys != IntPtr.Zero) 1384Keys = IntPtr.Zero; 1438if (SecurityDescriptor != IntPtr.Zero) 1441SecurityDescriptor = IntPtr.Zero;

parent\parent\parent\public\Internal\NDP\Inc\IsolationInterop.cs (49)

25if (BlobData != IntPtr.Zero) 28BlobData = IntPtr.Zero; 1325if (ip != IntPtr.Zero) 1524this.ValueSize = (Value != null) ? new IntPtr((Value.Length + 1) * 2) : IntPtr.Zero; 1571PropertiesToSet = IntPtr.Zero; 1572cPropertiesToSet = IntPtr.Zero; 1582PropertiesToTest = IntPtr.Zero; 1583cPropertiesToTest = IntPtr.Zero; 1592if (PropertiesToSet != IntPtr.Zero) 1595PropertiesToSet = IntPtr.Zero; 1596cPropertiesToSet = IntPtr.Zero; 1599if (PropertiesToTest != IntPtr.Zero) 1602PropertiesToTest = IntPtr.Zero; 1603cPropertiesToTest = IntPtr.Zero; 1606if (InstallerReference != IntPtr.Zero) 1609InstallerReference = IntPtr.Zero; 1616if (rgItems != IntPtr.Zero) 1636return IntPtr.Zero; 1835IntPtr DelimIntPtr = IntPtr.Zero; 1992private IntPtr _pLockCookie = IntPtr.Zero; 2008if (_pLockCookie != IntPtr.Zero) 2011_pLockCookie = IntPtr.Zero; 2039private IntPtr _pLockCookie = IntPtr.Zero; 2055if (_pLockCookie != IntPtr.Zero) 2058_pLockCookie = IntPtr.Zero; 2459if (op.Data.DataPtr != IntPtr.Zero) 2645_userStore = new Store(GetUserStore(0, IntPtr.Zero, ref IID_IStore) as IStore); 2659return new Store(GetUserStore(0, IntPtr.Zero, ref IID_IStore) as IStore); 2827Parameters.CustomStoreList = IntPtr.Zero; 2828Parameters.CultureFallbackList = IntPtr.Zero; 2829Parameters.ProcessorArchitectureList = IntPtr.Zero; 2830Parameters.Source = IntPtr.Zero; 2836SourceInfo.Data = IntPtr.Zero; 2854if (SourceInfo.Data != IntPtr.Zero) 2857SourceInfo.Data = IntPtr.Zero; 2860if (Parameters.Source != IntPtr.Zero) 2863Parameters.Source = IntPtr.Zero; 2877Parameters.CustomStoreList = IntPtr.Zero; 2878Parameters.CultureFallbackList = IntPtr.Zero; 2879Parameters.ProcessorArchitectureList = IntPtr.Zero; 2880Parameters.Source = IntPtr.Zero; 2886SourceInfo.Data = IntPtr.Zero; 2904if (SourceInfo.Data != IntPtr.Zero) 2907SourceInfo.Data = IntPtr.Zero; 2910if (Parameters.Source != IntPtr.Zero) 2913Parameters.Source = IntPtr.Zero; 3099_appcontext.PrepareForExecution(IntPtr.Zero, IntPtr.Zero); 3130_appcontext.GetApplicationStateFilesystemLocation(0, UIntPtr.Zero, IntPtr.Zero, out s);

parent\parent\parent\public\Internal\NDP\Inc\mansign.cs (5)

1330if (signerInfo.pChainContext != IntPtr.Zero) 1336if (signerInfo.pwszHash != IntPtr.Zero) { 1339if (signerInfo.pwszDescription != IntPtr.Zero) { 1342if (signerInfo.pwszDescriptionUrl != IntPtr.Zero) { 1426if (timestamperInfo.pChainContext != IntPtr.Zero) {

parent\parent\parent\public\Internal\NDP\Inc\mansign2.cs (14)

1012IntPtr ppTsContext = IntPtr.Zero; 1013IntPtr ppTsSigner = IntPtr.Zero; 1014IntPtr phStore = IntPtr.Zero; 1023IntPtr.Zero, 1033if (ppTsContext != IntPtr.Zero) 1036if (ppTsSigner != IntPtr.Zero) 1039if (phStore != IntPtr.Zero) 1774IntPtr ppTsContext = IntPtr.Zero; 1775IntPtr ppTsSigner = IntPtr.Zero; 1776IntPtr phStore = IntPtr.Zero; 1790pszTSAPolicyId = IntPtr.Zero, 1821if (ppTsContext != IntPtr.Zero) 1824if (ppTsSigner != IntPtr.Zero) 1827if (phStore != IntPtr.Zero)

winforms\Managed\System\WinForms\AccessibleObject.cs (3)

914ppvObject = IntPtr.Zero; 2165hwnd = IntPtr.Zero; 3334ppvObject = IntPtr.Zero;

winforms\Managed\System\WinForms\Application.cs (34)

156if (hModule != IntPtr.Zero) { 159return (pFunc != IntPtr.Zero); 165if (hModule != IntPtr.Zero) { 167return (pFunc != IntPtr.Zero); 781SafeNativeMethods.EnumWindows(callback, IntPtr.Zero); 798SendThemeChangedRecursive(handle, IntPtr.Zero); 2110if (msg.hwnd != IntPtr.Zero && SafeNativeMethods.IsWindowUnicode(new HandleRef(null, msg.hwnd))) { 2185UnsafeNativeMethods.MsgWaitForMultipleObjectsEx(0, IntPtr.Zero, 100, NativeMethods.QS_ALLINPUT, NativeMethods.MWMO_INPUTAVAILABLE); 2238ppvObj = IntPtr.Zero; 2394IntPtr address = IntPtr.Zero; 2458IntPtr retval = IntPtr.Zero; 2470if (NativeMethods.Succeeded(hr) && retval != IntPtr.Zero) { 2484if (NativeMethods.Succeeded(hr) && pmsocm != IntPtr.Zero) { 2817if (handle != IntPtr.Zero) { 2819handle = IntPtr.Zero; 3007if (handle != IntPtr.Zero) { 3009handle = IntPtr.Zero; 3312UnsafeNativeMethods.PostThreadMessage(id, NativeMethods.WM_QUIT, IntPtr.Zero, IntPtr.Zero); 3342IntPtr userCookie = IntPtr.Zero; 3405HandleRef hwndOwner = new HandleRef(null, IntPtr.Zero); 3429if (hwndOwner.Handle != IntPtr.Zero) { 3436hwndOwner = new HandleRef(null, IntPtr.Zero); 3487if (hwndOwner.Handle != IntPtr.Zero) { 3535if (msg.hwnd != IntPtr.Zero && SafeNativeMethods.IsWindowUnicode(new HandleRef(null, msg.hwnd))) { 3702if (hwndRoot != IntPtr.Zero && UnsafeNativeMethods.IsDialogMessage(new HandleRef(null, hwndRoot), ref msg)) 4041return IntPtr.Zero; 4156UnsafeNativeMethods.PostMessage(new HandleRef(this, HandleInternal), WM_CHECKDESTROY, IntPtr.Zero, IntPtr.Zero); 4168if (hwndChild == IntPtr.Zero) { 4211UnsafeNativeMethods.PostMessage(new HandleRef(this, Handle), WM_CHECKDESTROY, IntPtr.Zero, IntPtr.Zero); 4313if (activeHwnd != IntPtr.Zero && UnsafeNativeMethods.IsWindow(new HandleRef(null, activeHwnd))) { 4317if (focusedHwnd != IntPtr.Zero && UnsafeNativeMethods.IsWindow(new HandleRef(null, focusedHwnd))) {

winforms\Managed\System\WinForms\AxHost.cs (31)

189private IntPtr wndprocAddr = IntPtr.Zero; 202private IntPtr hwndFocus = IntPtr.Zero; 1205return IntPtr.Zero; 1453if (hDC == IntPtr.Zero) 1613if (!IsHandleCreated || wndprocAddr == IntPtr.Zero) return true; 2114msg.hwnd = (ContainingControl == null) ? IntPtr.Zero : ContainingControl.Handle; 2470GetOleObject().DoVerb(verb, IntPtr.Zero, oleSite, -1, parent != null ? parent.Handle : IntPtr.Zero, FillInRect(new NativeMethods.COMRECT(), Bounds)); 3294if (uuids.pElems != IntPtr.Zero) { 3308opcparams.hwndOwner = (ContainingControl == null) ? IntPtr.Zero : ContainingControl.Handle; 3380IntPtr handle = (ContainingControl == null) ? IntPtr.Zero : ContainingControl.Handle; 3381SafeNativeMethods.OleCreatePropertyFrame(new HandleRef(this, handle), 0, 0, name, 1, ref o, uuids.cElems, new HandleRef(null, uuids.pElems), Application.CurrentCulture.LCID, 0, IntPtr.Zero); 3390if (uuids.pElems != IntPtr.Zero) 3408return IntPtr.Zero; // bypass Control's anti-reflect logic 3470hwndFocus = IntPtr.Zero; 3560if (handle != IntPtr.Zero) { 4195if (hwnd != IntPtr.Zero) { 4230return parent != null ? parent.Handle : IntPtr.Zero; 4275lpFrameInfo.hAccel = IntPtr.Zero; 4582wndprocAddr = IntPtr.Zero; 4807IntPtr hPal = IntPtr.Zero; 4829IntPtr hPal = IntPtr.Zero; 5156if (lpBuffer == IntPtr.Zero || cpBuffer < 2) 5159IntPtr pbstr = IntPtr.Zero; 5164if (pbstr != IntPtr.Zero) { 5203if (pceltFetched != IntPtr.Zero) 5224if (pceltFetched != IntPtr.Zero) 6691IntPtr hglobal = IntPtr.Zero; 6696if (pointer != IntPtr.Zero) { 6721if (iLockBytes == null && hglobal != IntPtr.Zero) { 6798if (pointer != IntPtr.Zero) {

winforms\Managed\System\WinForms\ButtonInternal\ButtonStandardAdapter.cs (1)

95if (color.A == 255 && e.HDC != IntPtr.Zero) {

winforms\Managed\System\WinForms\ButtonRenderer.cs (1)

140DrawButtonForHandle(g, bounds, focused, state, IntPtr.Zero);

winforms\Managed\System\WinForms\CheckBoxRenderer.cs (3)

100DrawCheckBox(g, glyphLocation, state, IntPtr.Zero); 141DrawCheckBox(g, glyphLocation, textBounds, checkBoxText, font, flags, focused, state, IntPtr.Zero); 231return GetGlyphSize(g, state, IntPtr.Zero);

winforms\Managed\System\WinForms\CheckedListBox.cs (1)

1106m.Result = IntPtr.Zero;

winforms\Managed\System\WinForms\ColumnHeader.cs (1)

398if (hwndHdr != IntPtr.Zero) {

winforms\Managed\System\WinForms\ComboBox.cs (13)

655return focus != IntPtr.Zero && ((childEdit != null && focus == childEdit.Handle) || (childListBox != null && focus == childListBox.Handle)); 2048if (childEdit != null && childEdit.Handle != IntPtr.Zero) { 2051if (childListBox != null && childListBox.Handle != IntPtr.Zero) { 2205return IntPtr.Zero; 2441if (hwnd != IntPtr.Zero) { 2520dropDownHandle = IntPtr.Zero; 3367if (dropDownHandle != IntPtr.Zero) { 3442if (childEdit != null && childEdit.Handle != IntPtr.Zero) { 3443UnsafeNativeMethods.SendMessage(new HandleRef(this, childEdit.Handle), NativeMethods.WM_SETTEXT, IntPtr.Zero, s); 3620if (oldPal != IntPtr.Zero) { 3774if (m.WParam == IntPtr.Zero) { 4442Debug.Assert(owner != null && owner.Handle != IntPtr.Zero, "ComboBox's handle hasn't been created"); 5871UnsafeNativeMethods.EnumThreadWindows(SafeNativeMethods.GetCurrentThreadId(), new NativeMethods.EnumThreadWindowsCallback(this.Callback), new HandleRef(null, IntPtr.Zero));

winforms\Managed\System\WinForms\ComboBoxRenderer.cs (1)

153DrawDropDownButtonForHandle(g, bounds, state, IntPtr.Zero);

winforms\Managed\System\WinForms\CommonDialog.cs (10)

167return IntPtr.Zero; 222return IntPtr.Zero; 275IntPtr hwndOwner = IntPtr.Zero; 282if (hwndOwner == IntPtr.Zero) { 286if (hwndOwner == IntPtr.Zero) { 299System.Diagnostics.Debug.Assert(IntPtr.Zero == defOwnerWndProc, "The previous subclass wasn't properly cleaned up"); 301IntPtr userCookie = IntPtr.Zero; 320if ( IntPtr.Zero != defOwnerWndProc || currentSubClass != hookedWndProc) { 325defOwnerWndProc = IntPtr.Zero; 326hookedWndProc = IntPtr.Zero;

winforms\Managed\System\WinForms\ComponentManagerBroker.cs (2)

410return IntPtr.Zero; 594if (_original == null) { ppvObj = IntPtr.Zero; return false; }

winforms\Managed\System\WinForms\ComponentModel\COM2Interop\BaseCAMarshaler.cs (2)

51if (itemArray == null && caArrayAddress != IntPtr.Zero) { 136caArrayAddress = IntPtr.Zero;

winforms\Managed\System\WinForms\ComponentModel\COM2Interop\COM2ComponentEditor.cs (5)

41if (uuids.pElems != IntPtr.Zero) { 59IntPtr handle = (parent == null ? IntPtr.Zero : parent.Handle); 69SafeNativeMethods.OleCreatePropertyFrame(new HandleRef(parent, handle), 0, 0, "PropertyPages", 1, ref o, 1, new Guid[]{guid}, Application.CurrentCulture.LCID, 0, IntPtr.Zero); 92SafeNativeMethods.OleCreatePropertyFrame(new HandleRef(parent, handle), 0, 0, "PropertyPages", 1, ref o, uuids.cElems, new HandleRef(uuids, uuids.pElems), Application.CurrentCulture.LCID, 0, IntPtr.Zero); 96if (uuids.pElems != IntPtr.Zero) {

winforms\Managed\System\WinForms\ComponentModel\COM2Interop\COM2FontConverter.cs (2)

25private IntPtr lastHandle = IntPtr.Zero; 56lastHandle = IntPtr.Zero;

winforms\Managed\System\WinForms\ComponentModel\COM2Interop\COM2IManagedPerPropertyBrowsingHandler.cs (6)

55IntPtr pbstrs = IntPtr.Zero; 56IntPtr pvars = IntPtr.Zero; 199if (ptr != IntPtr.Zero) { 205if (bstr != IntPtr.Zero) { 231if (ptr != IntPtr.Zero) { 238if (curVariant != IntPtr.Zero) {

winforms\Managed\System\WinForms\ComponentModel\COM2Interop\COM2PictureConverter.cs (3)

27IntPtr lastPalette = IntPtr.Zero; 70if (handle != IntPtr.Zero) { 133lastNativeHandle = lastPalette = IntPtr.Zero;

winforms\Managed\System\WinForms\ComponentModel\COM2Interop\COM2Properties.cs (1)

410IntPtr pTypeAttr = IntPtr.Zero;

winforms\Managed\System\WinForms\ComponentModel\COM2Interop\COM2PropertyPageUITypeConverter.cs (2)

1090, IntPtr.Zero ); 113if (objAddrs[i] != IntPtr.Zero) {

winforms\Managed\System\WinForms\ComponentModel\COM2Interop\COM2TypeInfoProcessor.cs (25)

131if (NativeMethods.Failed(pCI.GetInfoOfIndex(i, 1 /*MULTICLASSINFO_GETTYPEINFO*/, ref temp, 0, 0, IntPtr.Zero, IntPtr.Zero))){ 283IntPtr pTypeAttr = IntPtr.Zero; 342Debug.Assert(typeDesc.unionMember != IntPtr.Zero, "typeDesc doesn't contain an hreftype!"); 348Debug.Assert(typeDesc.unionMember != IntPtr.Zero, "typeDesc doesn't contain an refTypeDesc!"); 389IntPtr pRefTypeAttr = IntPtr.Zero; 621IntPtr pTypeAttr = IntPtr.Zero; 624if (!NativeMethods.Succeeded(hr) || pTypeAttr == IntPtr.Zero) { 644IntPtr pFuncDesc = IntPtr.Zero; 647if (!NativeMethods.Succeeded(hr) || pFuncDesc == IntPtr.Zero) { 679Debug.Assert(funcDesc.lprgelemdescParam != IntPtr.Zero, "ELEMDESC param is null!"); 680if (funcDesc.lprgelemdescParam == IntPtr.Zero || funcDesc.cParams != 1) { 726IntPtr pTypeAttr = IntPtr.Zero; 729if (!NativeMethods.Succeeded(hr) || pTypeAttr == IntPtr.Zero) { 736if (pTypeAttr == IntPtr.Zero) { 762IntPtr pVarDesc = IntPtr.Zero; 765if (!NativeMethods.Succeeded(hr) || pVarDesc == IntPtr.Zero) { 776varDesc.unionMember == IntPtr.Zero) { 826if (pVarDesc != IntPtr.Zero) { 865if (pTypeInfoUnk != IntPtr.Zero) { 884IntPtr pTypeAttr = IntPtr.Zero; 887if (!NativeMethods.Succeeded(hr) || pTypeAttr == IntPtr.Zero) { 901IntPtr pVarDesc = IntPtr.Zero; 904if (!NativeMethods.Succeeded(hr) || pVarDesc == IntPtr.Zero) { 926if (pVarDesc != IntPtr.Zero) {

winforms\Managed\System\WinForms\ContainerControl.cs (2)

678if (focusHandle == IntPtr.Zero || Control.FromChildHandleInternal(focusHandle) != activeControl) { 740if (dc == IntPtr.Zero) {

winforms\Managed\System\WinForms\Control.cs (138)

winforms\Managed\System\WinForms\Control.Ime.cs (12)

420if( focusHandle != IntPtr.Zero ) { 428if( focusHandle != IntPtr.Zero ) { 718m.Result = IntPtr.Zero; 903if( oldContext != IntPtr.Zero ) { 925if( inputContext == IntPtr.Zero ) { 926if( originalImeContext == IntPtr.Zero ) { 929if( inputContext != IntPtr.Zero ) { 961IntPtr inputContext = IntPtr.Zero; 977if( inputContext == IntPtr.Zero ) { 1021if( inputContext != IntPtr.Zero ) { 1118if( inputContext != IntPtr.Zero ) { 1237if( inputContext != IntPtr.Zero ) {

winforms\Managed\System\WinForms\ControlPaint.cs (8)

206enoughBits, IntPtr.Zero, 0); 210if (hBitmap == IntPtr.Zero) { 216if (previousBitmap == IntPtr.Zero) { 271Debug.Assert(data.Scan0 != IntPtr.Zero, "BitmapData.Scan0 is null; check marshalling"); 1383graphics.DrawImage(bitmap, new Rectangle(x, y, width, height), 0, 0, width, height, GraphicsUnit.Pixel, attrs, null, IntPtr.Zero); 1524g.DrawImage(image, dest, 0, 0, image.Width, image.Height, GraphicsUnit.Pixel, attrs, null, IntPtr.Zero); 1537GraphicsUnit.Pixel, attributes, null, IntPtr.Zero); 1807if (pen != IntPtr.Zero)

winforms\Managed\System\WinForms\Cursor.cs (14)

44private IntPtr handle = IntPtr.Zero; // handle to loaded image 104if (handle == IntPtr.Zero) { 230IntPtr handle = (value == null) ? IntPtr.Zero : value.handle; 244if (handle == IntPtr.Zero) { 285if (info.hbmMask != IntPtr.Zero) { 288info.hbmMask = IntPtr.Zero; 290if (info.hbmColor != IntPtr.Zero) { 293info.hbmColor = IntPtr.Zero; 400if (handle != IntPtr.Zero) { 402handle = IntPtr.Zero; 583handle = IntPtr.Zero; 596if (info.hbmColor != IntPtr.Zero) { 601else if (info.hbmMask != IntPtr.Zero) { 606if (info.hbmMask != IntPtr.Zero) {

winforms\Managed\System\WinForms\Cursors.cs (1)

55if (handle == IntPtr.Zero) {

winforms\Managed\System\WinForms\DataGrid.cs (1)

5783if (handle != IntPtr.Zero) {

winforms\Managed\System\WinForms\DataGridToolTip.cs (2)

36if (tipWindow == null || tipWindow.Handle == IntPtr.Zero) 59Debug.Assert(tipWindow != null && tipWindow.Handle != IntPtr.Zero, "the tipWindow was not initialized, bailing out");

winforms\Managed\System\WinForms\DataGridViewCell.cs (1)

1330UnsafeNativeMethods.SetFocus(new HandleRef(null, IntPtr.Zero));

winforms\Managed\System\WinForms\DataGridViewMethods.cs (3)

5437IntPtr handle = IntPtr.Zero; 5442if (handle != IntPtr.Zero) 29925if (m.LParam == IntPtr.Zero)

winforms\Managed\System\WinForms\DataObject.cs (31)

winforms\Managed\System\WinForms\DateTimePicker.cs (3)

1575if (c.hwndFound != IntPtr.Zero) { 1637if (handle != IntPtr.Zero) { 1735public IntPtr hwndFound = IntPtr.Zero;

winforms\Managed\System\WinForms\Design\ComponentEditorForm.cs (11)

680Debug.Assert(hbrushDither == IntPtr.Zero, "Brush should not be recreated."); 688Debug.Assert(hbitmapTemp != IntPtr.Zero, 691if (hbitmapTemp != IntPtr.Zero) { 694Debug.Assert(hbrushDither != IntPtr.Zero, 707IntPtr hfontOld = IntPtr.Zero; 715if (((state & STATE_SELECTED) != 0) && (hbrushDither != IntPtr.Zero)) { 769if (hfontOld != IntPtr.Zero) 782if (hbrushDither == IntPtr.Zero) { 827if (!RecreatingHandle && (hbrushDither != IntPtr.Zero)) { 829hbrushDither = IntPtr.Zero; 836if (hbrushOld != IntPtr.Zero) {

winforms\Managed\System\WinForms\ErrorProvider.cs (6)

941if (Handle == IntPtr.Zero) { 1188IntPtr windowRegionHandle = IntPtr.Zero; 1260windowRegionHandle = IntPtr.Zero; 1273if (windowRegionHandle != IntPtr.Zero) { 1695IntPtr mask = IntPtr.Zero; 1724if (mask != IntPtr.Zero)

winforms\Managed\System\WinForms\FileDialog.cs (6)

760int sizeNeeded = (int)UnsafeNativeMethods.SendMessage(new HandleRef(this, dialogHWnd), 1124 /*CDM_GETSPEC*/, System.IntPtr.Zero, System.IntPtr.Zero); 813if (dialogHWnd != IntPtr.Zero) { 814UnsafeNativeMethods.EndDialog(new HandleRef(this, dialogHWnd), IntPtr.Zero); 819return IntPtr.Zero; 1034if (ofn.lpstrFile != IntPtr.Zero) {

winforms\Managed\System\WinForms\FileDialog_Vista.cs (3)

307IntPtr pidl = IntPtr.Zero; 312IntPtr.Zero, //No parent specified 313IntPtr.Zero,

winforms\Managed\System\WinForms\FileDialogCustomPlace.cs (1)

109int result = UnsafeNativeMethods.Shell32.SHGetFolderPathEx(ref folderGuid, 0, IntPtr.Zero, path);

winforms\Managed\System\WinForms\FolderBrowserDialog.cs (12)

234IntPtr pidlRoot = IntPtr.Zero; 238if (pidlRoot == IntPtr.Zero) 241if (pidlRoot == IntPtr.Zero) 262IntPtr pidlRet = IntPtr.Zero; 263IntPtr pszDisplayName = IntPtr.Zero; 264IntPtr pszSelectedPath = IntPtr.Zero; 281bi.lParam = IntPtr.Zero; 287if (pidlRet != IntPtr.Zero) 305if (pidlRet != IntPtr.Zero) 311if (pszSelectedPath != IntPtr.Zero) 315if (pszDisplayName != IntPtr.Zero) 347if (selectedPidl != IntPtr.Zero)

winforms\Managed\System\WinForms\FontDialog.cs (6)

479int index = (int)UnsafeNativeMethods.SendDlgItemMessage(new HandleRef(null, hWnd), 0x473, NativeMethods.CB_GETCURSEL, IntPtr.Zero, IntPtr.Zero); 482NativeMethods.CB_GETITEMDATA, (IntPtr) index, IntPtr.Zero)); 575IntPtr logFontPtr = IntPtr.Zero; 582cf.hDC = IntPtr.Zero; 625if (logFontPtr != IntPtr.Zero)

winforms\Managed\System\WinForms\Form.cs (31)

2515if (ownerWindow.Handle == IntPtr.Zero) { 3344hmenu = IntPtr.Zero; 3701if (icon != null && TaskbarOwner.Handle != IntPtr.Zero) { 4106using( Graphics graphics = Graphics.FromHwndInternal(IntPtr.Zero /*screen*/) ) { 4450IntPtr ownerHandle = IntPtr.Zero; 4453if (ownerHandle != IntPtr.Zero) { 4495IntPtr hWndOwner = IntPtr.Zero; 4499if (hWndOwner != IntPtr.Zero) { 5193m.Result = IntPtr.Zero; 5293if (ctlClient != null && ctlClient.Handle != IntPtr.Zero && 6099IntPtr hWndOldOwner = IntPtr.Zero; 6105if (hWndOwner != IntPtr.Zero && hWndOwner != Handle) { 6170if (hWndCapture != IntPtr.Zero) { 6171UnsafeNativeMethods.SendMessage(new HandleRef(null, hWndCapture), NativeMethods.WM_CANCELMODE, IntPtr.Zero, IntPtr.Zero); 6176IntPtr hWndOldOwner = IntPtr.Zero; 6206if (hWndOwner != IntPtr.Zero && hWndOwner != Handle) { 6547UnsafeNativeMethods.SendMessage(new HandleRef(ctlClient, ctlClient.Handle), NativeMethods.WM_MDISETMENU, dummyMenu.Handle, IntPtr.Zero); 6553UnsafeNativeMethods.SendMessage(new HandleRef(ctlClient, ctlClient.Handle), NativeMethods.WM_MDISETMENU, menu.Handle, IntPtr.Zero); 6560if (hMenu != IntPtr.Zero) { 6701if (hMenu == IntPtr.Zero) { 7077e.Cancel = m.WParam == IntPtr.Zero; 7229m.Result = IntPtr.Zero; 7267if (m.Result != IntPtr.Zero) { 7627m.Result = IntPtr.Zero; 7635m.Result = IntPtr.Zero; 7753Debug.Assert(lParam != IntPtr.Zero); 7835if (window.Handle != IntPtr.Zero) { 7859toolInfo.uId = IntPtr.Zero; 7863toolInfo.hwnd = IntPtr.Zero; 7899if (window.Handle != IntPtr.Zero) {

winforms\Managed\System\WinForms\GroupBox.cs (1)

804m.Result = IntPtr.Zero;

winforms\Managed\System\WinForms\HtmlDocument.cs (8)

551dp.rgvarg = IntPtr.Zero; 569dp.rgvarg = (args == null) ? IntPtr.Zero : HtmlDocument.ArrayToVARIANTVector(args); 571dp.rgdispidNamedArgs = IntPtr.Zero; 595if (dp.rgvarg != IntPtr.Zero) 1207IntPtr leftPtr = IntPtr.Zero; 1208IntPtr rightPtr = IntPtr.Zero; 1217if (leftPtr != IntPtr.Zero) 1221if (rightPtr != IntPtr.Zero)

winforms\Managed\System\WinForms\HtmlElement.cs (9)

600dp.rgvarg = IntPtr.Zero; 619dp.rgvarg = (parameter == null) ? IntPtr.Zero : HtmlDocument.ArrayToVARIANTVector(parameter); 621dp.rgdispidNamedArgs = IntPtr.Zero; 645if (dp.rgvarg != IntPtr.Zero) 671((UnsafeNativeMethods.IHTMLElement3)this.NativeHtmlElement).FireEvent(eventName, IntPtr.Zero); 1540IntPtr leftPtr = IntPtr.Zero; 1541IntPtr rightPtr = IntPtr.Zero; 1550if (leftPtr != IntPtr.Zero) 1554if (rightPtr != IntPtr.Zero)

winforms\Managed\System\WinForms\HtmlWindow.cs (4)

785IntPtr leftPtr = IntPtr.Zero; 786IntPtr rightPtr = IntPtr.Zero; 795if (leftPtr != IntPtr.Zero) 799if (rightPtr != IntPtr.Zero)

winforms\Managed\System\WinForms\ImageList.cs (3)

550if (Handle == IntPtr.Zero) throw new InvalidOperationException(SR.GetString(SR.ImageListCreateFailed)); 948if (himl != IntPtr.Zero) { 950himl = IntPtr.Zero;

winforms\Managed\System\WinForms\ImageListStreamer.cs (3)

79if (nativeImageList.Handle == IntPtr.Zero) 215IntPtr handle = IntPtr.Zero; 223if (handle == IntPtr.Zero || !WriteImageList(handle, stream))

winforms\Managed\System\WinForms\InputLanguage.cs (3)

78if (handleOld == IntPtr.Zero) { 317uint res = UnsafeNativeMethods.SHLoadIndirectString(layoutDisplayName, sb, (uint)sb.Capacity, IntPtr.Zero); 346bool localeSupportedBySystem = !(m.WParam == IntPtr.Zero);

winforms\Managed\System\WinForms\ListBox.cs (2)

1652bool selected = (unchecked( (int) (long)SendMessage(NativeMethods.LB_GETSEL, (IntPtr)index, IntPtr.Zero)) > 0); 2348if (oldPal != IntPtr.Zero) {

winforms\Managed\System\WinForms\ListView.cs (32)

winforms\Managed\System\WinForms\ListViewItem.cs (2)

1160Debug.Assert(!updateOwner || listView.SendMessage(NativeMethods.LVM_ISGROUPVIEWENABLED, 0, 0) != IntPtr.Zero, "Groups not enabled"); 1161Debug.Assert(!updateOwner || listView.SendMessage(NativeMethods.LVM_HASGROUP, lvItem.iGroupId, 0) != IntPtr.Zero, "Doesn't contain group id: " + lvItem.iGroupId.ToString(CultureInfo.InvariantCulture));

winforms\Managed\System\WinForms\MaskedTextBox.cs (1)

1204if (inputContext != IntPtr.Zero)

winforms\Managed\System\WinForms\MDIClient.cs (11)

120cp.Param = new NativeMethods.CLIENTCREATESTRUCT(IntPtr.Zero, 1); 166if (Handle == IntPtr.Zero) 192if (site != null && site.DesignMode && Handle != IntPtr.Zero) { 290IntPtr rgn1 = IntPtr.Zero; 291IntPtr rgn2 = IntPtr.Zero; 303if (rgn1 == IntPtr.Zero || rgn2 == IntPtr.Zero) 314rgn1 = IntPtr.Zero; 318if (rgn2 != IntPtr.Zero) { 324if (rgn1 != IntPtr.Zero) { 356if (ParentInternal != null && ParentInternal.Site != null && ParentInternal.Site.DesignMode && Handle != IntPtr.Zero) {

winforms\Managed\System\WinForms\MDIControlStrip.cs (1)

134Icon icon = (hIcon != IntPtr.Zero) ? Icon.FromHandle(hIcon) : Form.DefaultIcon;

winforms\Managed\System\WinForms\Menu.cs (7)

84if (handle == IntPtr.Zero) handle = CreateMenuHandle(); 216if (handle != IntPtr.Zero) { 219handle = IntPtr.Zero; 312if (handle != IntPtr.Zero) { 314this.handle = IntPtr.Zero; 487return IntPtr.Zero; 654if (result == IntPtr.Zero)

winforms\Managed\System\WinForms\MenuItem.cs (11)

73private IntPtr msaaMenuInfoPtr = IntPtr.Zero; 485if ((info.hSubMenu == IntPtr.Zero || info.hSubMenu == Handle) && info.wID == id) { 859hasHandle = info.hSubMenu != IntPtr.Zero; 908info.hbmpChecked = IntPtr.Zero; 909info.hbmpUnchecked = IntPtr.Zero; 1059Debug.Assert(msaaMenuInfoPtr != IntPtr.Zero); 1066if (msaaMenuInfoPtr != IntPtr.Zero) { 1069msaaMenuInfoPtr = IntPtr.Zero; 1470if (hasHandle && info.hSubMenu == IntPtr.Zero) { 1473hasHandle = info.hSubMenu != IntPtr.Zero; 1505if (oldPal != IntPtr.Zero) {

winforms\Managed\System\WinForms\Message.cs (1)

103m.result = IntPtr.Zero;

winforms\Managed\System\WinForms\MessageBox.cs (4)

455IntPtr handle = IntPtr.Zero; 465IntPtr userCookie = IntPtr.Zero; 469if (UnsafeNativeMethods.GetModuleHandle(ExternDll.Shell32) == IntPtr.Zero) { 470if (UnsafeNativeMethods.LoadLibraryFromSystemPathIfAvailable(ExternDll.Shell32) == IntPtr.Zero) {

winforms\Managed\System\WinForms\MonthCalendar.cs (5)

114private IntPtr mdsBuffer = IntPtr.Zero; 1387if (mdsBuffer != IntPtr.Zero) { 1389mdsBuffer = IntPtr.Zero; 1929if (mdsBuffer != IntPtr.Zero) { 1931mdsBuffer = IntPtr.Zero;

winforms\Managed\System\WinForms\NativeMethods.cs (88)

winforms\Managed\System\WinForms\NativeWindow.cs (40)

winforms\Managed\System\WinForms\NotifyIcon.cs (11)

484if (window != null && window.Handle != IntPtr.Zero) { 694if (window.Handle == IntPtr.Zero) { 742UnsafeNativeMethods.PostMessage(new HandleRef(window, window.Handle), NativeMethods.WM_NULL, IntPtr.Zero, IntPtr.Zero); 774if (window.Handle == IntPtr.Zero) { 780data.hIcon = IntPtr.Zero; 901if (IntPtr.Zero == msg.LParam) { 911if (msg.WParam == IntPtr.Zero) { 917if (msg.WParam == IntPtr.Zero) { 954Debug.Assert(m.LParam != IntPtr.Zero, "m.lparam is null"); 1005if (Handle != IntPtr.Zero) {

winforms\Managed\System\WinForms\PaintEvent.cs (10)

39private readonly IntPtr dc = IntPtr.Zero; 40IntPtr oldPal = IntPtr.Zero; 83Debug.Assert(dc != IntPtr.Zero, "dc is not initialized."); 118return IntPtr.Zero; 132if (graphics == null && dc != IntPtr.Zero) { 164if (graphics != null && dc != IntPtr.Zero) { 169if (oldPal != IntPtr.Zero && dc != IntPtr.Zero) { 171oldPal = IntPtr.Zero; 182Debug.Assert(dc == IntPtr.Zero || savedGraphicsState != null, "Called ResetGraphics more than once?");

winforms\Managed\System\WinForms\Printing\PrintPreviewControl.cs (2)

726if (m.LParam != IntPtr.Zero) { 789if (m.LParam != IntPtr.Zero) {

winforms\Managed\System\WinForms\PropertyGrid.cs (11)

3841if (hWndParent != IntPtr.Zero) { 4806if (cds != null && cds.lpData != IntPtr.Zero) { 4929m.Result = IntPtr.Zero; 4993m.Result = (IntPtr) gridView.GetPropertyLocation(propName, m.LParam == IntPtr.Zero, m.WParam == IntPtr.Zero); 5002if( m.LParam != IntPtr.Zero ) { 5326IntPtr fileId = IntPtr.Zero; 5341fileId = IntPtr.Zero; 5356Debug.Assert(fileId != IntPtr.Zero, "Invalid file Id"); 5360if (fileId != IntPtr.Zero) 5397if (fileId == IntPtr.Zero) // Create id

winforms\Managed\System\WinForms\PropertyGridInternal\GridEntry.cs (1)

1984PaintOutlineWithExplorerTreeStyle(g, r, (DpiHelper.EnableDpiChangedHighDpiImprovements && GridEntryHost!=null) ? this.GridEntryHost.HandleInternal: IntPtr.Zero);

winforms\Managed\System\WinForms\PropertyGridInternal\GridToolTip.cs (2)

112cp.Parent = IntPtr.Zero; 243msg.WParam = IntPtr.Zero;

winforms\Managed\System\WinForms\PropertyGridInternal\PropertyGridView.cs (24)

998gotfocus = IntPtr.Zero != UnsafeNativeMethods.SetFocus(new HandleRef(this, Handle)); 1467if (baseHfont == IntPtr.Zero) { 1500if (boldHfont == IntPtr.Zero) { 2765hwnd != IntPtr.Zero; hwnd = UnsafeNativeMethods.GetParent(new HandleRef(null, hwnd))) { 3658if (baseHfont != IntPtr.Zero) { 3660baseHfont = IntPtr.Zero; 3662if (boldHfont != IntPtr.Zero) { 3664boldHfont = IntPtr.Zero; 4944if (priorFocus != IntPtr.Zero) { 5267if (m.LParam != IntPtr.Zero) { 5580UnsafeNativeMethods.MsgWaitForMultipleObjectsEx(0, IntPtr.Zero, 250, NativeMethods.QS_ALLINPUT, NativeMethods.MWMO_INPUTAVAILABLE); 5682while (hWnd != IntPtr.Zero) { 5684if (hWnd == IntPtr.Zero) { 6110m.Result = IntPtr.Zero; 6650UnsafeNativeMethods.PostMessage(new HandleRef(this, Handle), NativeMethods.WM_CHAR, (IntPtr)keyChar, IntPtr.Zero); 6847if (m.LParam != IntPtr.Zero) { 6889if (IntPtr.Zero == m.WParam) { 7079private IntPtr mouseHookHandle = IntPtr.Zero; 7115return mouseHookHandle != IntPtr.Zero; 7144if (mouseHookHandle != IntPtr.Zero) { 7160Debug.Assert(mouseHookHandle != IntPtr.Zero, "Failed to install mouse hook"); 7204if (mouseHookHandle != IntPtr.Zero) { 7207mouseHookHandle = IntPtr.Zero; 7296IntPtr ret = IntPtr.Zero;

winforms\Managed\System\WinForms\RadioButtonRenderer.cs (4)

99DrawRadioButton(g, glyphLocation, state, IntPtr.Zero); 134DrawRadioButton(g, glyphLocation, textBounds, radioButtonText, font, flags, focused, state, IntPtr.Zero); 180DrawRadioButton(g, glyphLocation, textBounds, radioButtonText, font, flags, image, imageBounds, focused, state, IntPtr.Zero); 218return GetGlyphSize(g, state, IntPtr.Zero);

winforms\Managed\System\WinForms\RichTextBox.cs (30)

361if (moduleHandle == IntPtr.Zero) { 718IntPtr hDC = UnsafeNativeMethods.CreateIC("DISPLAY", null, null, new HandleRef(null, IntPtr.Zero)); 723if (hDC != IntPtr.Zero) { 930pf.dxOffset = Pixel2Twip(IntPtr.Zero, bulletIndent, true); 965return Twip2Pixel(IntPtr.Zero,selCharOffset,false); 974cf.yOffset = Pixel2Twip(IntPtr.Zero, value, false); 1120return Twip2Pixel(IntPtr.Zero, selHangingIndent, true); 1127pf.dxOffset = Pixel2Twip(IntPtr.Zero, value, true); 1161return Twip2Pixel(IntPtr.Zero, selIndent, true); 1168pf.dxStartIndent = Pixel2Twip(IntPtr.Zero, value, true); 1290return Twip2Pixel(IntPtr.Zero, selRightIndent, true); 1299pf.dxRightIndent = Pixel2Twip(IntPtr.Zero, value, true); 1330selTabs[x] = Twip2Pixel(IntPtr.Zero, pf.rgxTabs[x], true); 1351pf.rgxTabs[x] = Pixel2Twip(IntPtr.Zero, value[x], true); 2136if (txrg.lpstrText == IntPtr.Zero) 2215if (txrg.lpstrText != IntPtr.Zero) Marshal.FreeCoTaskMem(txrg.lpstrText); 2873return IntPtr.Zero != UnsafeNativeMethods.SendMessage(new HandleRef(this, Handle), RichTextBoxConstants.EM_SETCHARFORMAT, RichTextBoxConstants.SCF_SELECTION, cf); 2879return IntPtr.Zero != UnsafeNativeMethods.SendMessage(new HandleRef(this, Handle), RichTextBoxConstants.EM_SETCHARFORMAT, charRange, cf); 2948if (hDC == IntPtr.Zero) { 2952if (hDC == IntPtr.Zero) return; 3282UnsafeNativeMethods.SendCallbackMessage(new HandleRef(this, Handle), RichTextBoxConstants.EM_SETOLECALLBACK, IntPtr.Zero, pRichEditOleCallback); 3354m.Result = IntPtr.Zero; 3379if (unmanagedBuffer == IntPtr.Zero) 3386if (txrg.lpstrText != IntPtr.Zero) 3503m.Result = IntPtr.Zero; 3519m.Result = IntPtr.Zero; 3527m.Result = IntPtr.Zero; 4027hmenu = IntPtr.Zero; 4041if (menu.items[i].handle != IntPtr.Zero) { 4047menu.handle = IntPtr.Zero;

winforms\Managed\System\WinForms\Screen.cs (6)

71internal Screen(IntPtr monitor) : this(monitor, IntPtr.Zero) { 98if (hdc == IntPtr.Zero) { 124SafeNativeMethods.EnumDisplayMonitors(NativeMethods.NullHandleRef, null, proc, IntPtr.Zero); 217return new Screen((IntPtr)PRIMARY_MONITOR, IntPtr.Zero); 332return new Screen((IntPtr)PRIMARY_MONITOR, IntPtr.Zero); 367return new Screen((IntPtr)PRIMARY_MONITOR, IntPtr.Zero);

winforms\Managed\System\WinForms\ScrollableControl.cs (2)

1307if (m.LParam != IntPtr.Zero) { 1385if (m.LParam != IntPtr.Zero) {

winforms\Managed\System\WinForms\ScrollBar.cs (1)

682return IntPtr.Zero;

winforms\Managed\System\WinForms\SendKeys.cs (16)

235if (hhook == IntPtr.Zero) { 242if (hhook == IntPtr.Zero) 260hookSupported = (hookHandle != IntPtr.Zero); 262if (hookHandle != IntPtr.Zero) 272return IntPtr.Zero; 305if (hhook != IntPtr.Zero) { 310hhook = IntPtr.Zero; 588currentInput[0].inputUnion.ki.dwExtraInfo = IntPtr.Zero; 590currentInput[1].inputUnion.ki.dwExtraInfo = IntPtr.Zero; 742AddEvent(new SKEvent(NativeMethods.WM_KEYUP, (int)Keys.ShiftKey, false, IntPtr.Zero)); 746AddEvent(new SKEvent(NativeMethods.WM_KEYUP, (int)Keys.ControlKey, false, IntPtr.Zero)); 750AddEvent(new SKEvent(NativeMethods.WM_SYSKEYUP, (int)Keys.Menu, false, IntPtr.Zero)); 891ParseKeys(keys, (control != null) ? control.Handle : IntPtr.Zero); 974if (hhook != IntPtr.Zero) { 980hhook = IntPtr.Zero; 1109return IntPtr.Zero;

winforms\Managed\System\WinForms\StatusBar.cs (4)

603SendMessage(NativeMethods.SB_SETICON, 0, IntPtr.Zero); 1683cp.Parent = IntPtr.Zero; 1697if (window.Handle == IntPtr.Zero) { 1705get { return window.Handle != IntPtr.Zero;}

winforms\Managed\System\WinForms\StatusBarPanel.cs (2)

212IntPtr handle = (this.icon == null) ? IntPtr.Zero : this.icon.Handle; 652this.parent.SendMessage(NativeMethods.SB_SETICON, (IntPtr)GetIndex(), IntPtr.Zero);

winforms\Managed\System\WinForms\StatusStrip.cs (2)

195if (rootHwnd.Handle != IntPtr.Zero) { 567if (rootHwnd.Handle != IntPtr.Zero && !UnsafeNativeMethods.IsZoomed(rootHwnd)) {

winforms\Managed\System\WinForms\StringSource.cs (1)

128if (pceltFetched != IntPtr.Zero)

winforms\Managed\System\WinForms\SystemInformation.cs (10)

49private static IntPtr processWinStation = IntPtr.Zero; 88data.lpszDefaultScheme = IntPtr.Zero; 122IntPtr hWndMouseWheel = IntPtr.Zero; 130if (hWndMouseWheel != IntPtr.Zero) { 1004IntPtr hWndMouseWheel = IntPtr.Zero; 1012if (hWndMouseWheel != IntPtr.Zero) { 1126IntPtr hwinsta = IntPtr.Zero; 1129if (hwinsta != IntPtr.Zero && processWinStation != hwinsta) { 1972if (hDsk == IntPtr.Zero) { 1977if (hDsk != IntPtr.Zero) {

winforms\Managed\System\WinForms\TabControl.cs (8)

526IntPtr handle = (value != null) ? value.Handle : IntPtr.Zero; 528SendMessage(NativeMethods.TCM_SETIMAGELIST, IntPtr.Zero, handle); 1067UnsafeNativeMethods.PostMessage(new HandleRef(this, Handle), tabBaseReLayoutMessage, IntPtr.Zero, IntPtr.Zero); 1361if (tooltipHwnd != IntPtr.Zero) { 1754UnsafeNativeMethods.SendMessage(new HandleRef(this, Handle), NativeMethods.TCM_SETCURSEL, (IntPtr)index, IntPtr.Zero); 2037ttt.hinst = IntPtr.Zero; 2060if (oldPal != IntPtr.Zero) {

winforms\Managed\System\WinForms\TabPage.cs (1)

568tcitem.lParam = IntPtr.Zero;

winforms\Managed\System\WinForms\TextBoxBase.cs (6)

1834IntPtr editOlePtr = IntPtr.Zero; 1840if (editOlePtr != IntPtr.Zero) { 1841IntPtr iTextDocument = IntPtr.Zero; 1882if (iTextDocument != IntPtr.Zero) { 1889if (editOlePtr != IntPtr.Zero) { 2190return IntPtr.Zero;

winforms\Managed\System\WinForms\Timer.cs (13)

310return _timerID != 0 && Handle != IntPtr.Zero; 318if (Handle == IntPtr.Zero) { 338Debug.Assert(Handle != IntPtr.Zero, "Timer HWND creation failed!"); 339return Handle != IntPtr.Zero; 345if (hWnd != IntPtr.Zero) { 357StopTimer(false, IntPtr.Zero); 367_timerID = (int) SafeNativeMethods.SetTimer(new HandleRef(this, Handle), TimerID++, interval, IntPtr.Zero); 376StopTimer(true, IntPtr.Zero); 384if (hWnd == IntPtr.Zero) { 399if (_stoppingTimer || hWnd == IntPtr.Zero || !UnsafeNativeMethods.IsWindow(new HandleRef(this, hWnd))) { 429StopTimer(false, IntPtr.Zero); 441StopTimer(false, IntPtr.Zero); 449Debug.Assert(m.HWnd == Handle && Handle != IntPtr.Zero, "Timer getting messages for other windows?");

winforms\Managed\System\WinForms\ToolBar.cs (4)

1239if (tbbi.pszText != IntPtr.Zero) { 1358IntPtr ptbbuttons = IntPtr.Zero; 1584ttt.hinst = IntPtr.Zero; 1606ttt.hinst = IntPtr.Zero;

winforms\Managed\System\WinForms\ToolStrip.cs (13)

60private IntPtr hwndThatLostFocus = IntPtr.Zero; 793if (dropDownOwnerWindow.Handle == IntPtr.Zero) { 1936if (hwndThatLostFocus == IntPtr.Zero) { 4113if ((hwndThatLostFocus != IntPtr.Zero) && (hwndThatLostFocus != this.Handle)) { 4117hwndThatLostFocus = IntPtr.Zero; 4123hwndThatLostFocus = IntPtr.Zero; 4542if (thisHwndRoot.Handle == otherHwndRoot.Handle && (thisHwndRoot.Handle != IntPtr.Zero)) { 4732if (rootHwnd.Handle != IntPtr.Zero) { 5229if (cachedItemHDC.Handle == IntPtr.Zero) { 5240if (oldBitmap != IntPtr.Zero) { 5243oldBitmap = IntPtr.Zero; 5257if (cachedItemHDC.Handle != IntPtr.Zero) { 5259if (cachedItemBitmap.Handle != IntPtr.Zero) {

winforms\Managed\System\WinForms\ToolStripDropDown.cs (1)

2224if (m.WParam != IntPtr.Zero /*activating*/) {

winforms\Managed\System\WinForms\ToolStripDropDownMenu.cs (1)

318 if (info.hSubMenu != IntPtr.Zero) {

winforms\Managed\System\WinForms\ToolStripManager.cs (15)

794if (_activeHwnd.Handle != IntPtr.Zero) { 853if (hwndActive != IntPtr.Zero) { 914if (ActiveHwnd.Handle != IntPtr.Zero) { 1125if (hwndActive != IntPtr.Zero) { 1252if (hwndCurrentActiveWindow.Handle == IntPtr.Zero) { 1334ProcessMouseButtonPressed(/*nc messages are in screen coords*/IntPtr.Zero, 1367private IntPtr messageHookHandle = IntPtr.Zero; 1392return messageHookHandle != IntPtr.Zero; 1406if (messageHookHandle != IntPtr.Zero) { 1414new HandleRef(null, IntPtr.Zero), 1417if (messageHookHandle != IntPtr.Zero) { 1420Debug.Assert(messageHookHandle != IntPtr.Zero, "Failed to install mouse hook"); 1445if (messageHookHandle != IntPtr.Zero) { 1448messageHookHandle = IntPtr.Zero; 1710if (hMenu == IntPtr.Zero) {

winforms\Managed\System\WinForms\ToolStripMenuItem.cs (11)

47private IntPtr targetWindowHandle = IntPtr.Zero; 48private IntPtr nativeMenuHandle = IntPtr.Zero; 228if (base.Enabled && nativeMenuHandle != IntPtr.Zero && targetWindowHandle != IntPtr.Zero) { 703if (nativeMenuCommandID == -1 || nativeMenuHandle == IntPtr.Zero) { 720if (nativeMenuCommandID == -1 || nativeMenuHandle == IntPtr.Zero) { 731info.dwTypeData = IntPtr.Zero; 746 if (info.dwTypeData != IntPtr.Zero){ 753if (allocatedStringBuffer != IntPtr.Zero) { 767if (nativeMenuCommandID == -1 || nativeMenuHandle == IntPtr.Zero) { 778if (info.hbmpItem != IntPtr.Zero && info.hbmpItem.ToInt32() > NativeMethods.HBMMENU_POPUP_MINIMIZE) {

winforms\Managed\System\WinForms\ToolStripPanel.cs (1)

858while (UnsafeNativeMethods.PeekMessage(ref msg, new HandleRef(this, IntPtr.Zero),

winforms\Managed\System\WinForms\ToolStripTextBox.cs (5)

744if (hNonClientRegion.Handle != IntPtr.Zero) { 750if (hClientRegion.Handle != IntPtr.Zero) { 755if (hTotalRegion.Handle != IntPtr.Zero) { 853if (hdc.Handle == IntPtr.Zero) { 890m.Result = IntPtr.Zero;

winforms\Managed\System\WinForms\ToolTip.cs (13)

988if(allocatedString && IntPtr.Zero != tool.lpszText) { 1125return (window != null ? window.Handle != IntPtr.Zero: false); 1260if (hwndControl != IntPtr.Zero) 1268return IntPtr.Zero; 1271IntPtr baseHwnd = IntPtr.Zero; 1277IntPtr hwnd = IntPtr.Zero; 1290else if (found == IntPtr.Zero) { 1308if (hwnd != IntPtr.Zero) { 1316hwnd = IntPtr.Zero; 1481if(allocatedString && IntPtr.Zero != toolInfo.lpszText) { 2043if(allocatedString && IntPtr.Zero != ti.lpszText) { 2078if(IntPtr.Zero != toolInfo.lpszText) { 2482m.Result = IntPtr.Zero;

winforms\Managed\System\WinForms\TreeNode.cs (14)

333if (handle == IntPtr.Zero) 512if (handle == IntPtr.Zero) { 602if (handle == IntPtr.Zero) { 616if (handle == IntPtr.Zero) return false; 628if (handle == IntPtr.Zero) return false; 714if (next != IntPtr.Zero) { 843if (prev != IntPtr.Zero) { 909if (handle == IntPtr.Zero) 1202if (handle != IntPtr.Zero) { 1712if (editHandle != IntPtr.Zero) { 1728UnsafeNativeMethods.PostMessage(new HandleRef(tv, tv.Handle), NativeMethods.TVM_EDITLABEL, IntPtr.Zero, handle); 1804if (handle != IntPtr.Zero) { 1808handle = IntPtr.Zero; 1918if (handle == IntPtr.Zero) return;

winforms\Managed\System\WinForms\TreeNodeCollection.cs (2)

322if (node.handle != IntPtr.Zero) 460if (node.handle != IntPtr.Zero)

winforms\Managed\System\WinForms\TreeView.cs (40)

78private IntPtr hNodeMouseDown = IntPtr.Zero;//ensures we fire nodeclick on the correct node 648value==null? IntPtr.Zero: value.Handle); 1125if (hItem == IntPtr.Zero) 1143IntPtr hnode = (value == null ? IntPtr.Zero : value.Handle); 1336return(hitem == IntPtr.Zero ? null : NodeFromHandle(hitem)); 1347IntPtr hnode = (value == null ? IntPtr.Zero : value.Handle); 1750UnsafeNativeMethods.PostMessage(new HandleRef(this, Handle), NativeMethods.WM_SETREDRAW, (IntPtr)1, IntPtr.Zero); 1788TreeNode node = (hnode == IntPtr.Zero ? null : NodeFromHandle(hnode)); 1839return(hnode == IntPtr.Zero ? null : NodeFromHandle(hnode)); 1844IntPtr handle = (ImageList == null) ? IntPtr.Zero : ImageList.Handle; 1873IntPtr handle = IntPtr.Zero; 2096if ((handleOld != IntPtr.Zero) && (handleOld != handle)) 2106IntPtr handle = SendMessage(NativeMethods.TVM_GETIMAGELIST, NativeMethods.TVSIL_STATE, IntPtr.Zero); 2107if (handle != IntPtr.Zero) 2112SendMessage(NativeMethods.TVM_SETIMAGELIST, NativeMethods.TVSIL_STATE, IntPtr.Zero); 2169if (hnode != IntPtr.Zero && ((tvhip.flags & NativeMethods.TVHT_ONITEM) != 0)) { 2477if (item.hItem == IntPtr.Zero) { 2490if (item.hItem == IntPtr.Zero) { 2491return IntPtr.Zero; 2510if (item.hItem == IntPtr.Zero) { 2534if (nmtv->itemNew.hItem == IntPtr.Zero) { 2535return IntPtr.Zero; 2561if (nmtv->itemNew.hItem != IntPtr.Zero) { 2579if (nmtv->itemOld.hItem != IntPtr.Zero) { 2588if (nmtvdi.item.hItem == IntPtr.Zero) { 2589return IntPtr.Zero; 2604if (nmtvdi.item.hItem == IntPtr.Zero) { 2609string newText = (nmtvdi.item.pszText == IntPtr.Zero ? null : Marshal.PtrToStringAuto(nmtvdi.item.pszText)); 2694Debug.Assert(nmcd.nmcd.dwItemSpec != IntPtr.Zero, "Invalid node handle in ITEMPREPAINT"); 2807Debug.Assert(nmcd.nmcd.dwItemSpec != IntPtr.Zero, "Invalid node handle in ITEMPOSTPAINT"); 2910if (hnode != IntPtr.Zero && ((tvhip.flags & NativeMethods.TVHT_ONITEM) != 0)) { 2944if (hnode != IntPtr.Zero && ((tvhip.flags & NativeMethods.TVHT_ONITEM) != 0)) { 2957ttt.hinst = IntPtr.Zero; 3034if (hnode != IntPtr.Zero && !ValidationCancelled) { 3107UnsafeNativeMethods.PostMessage(new HandleRef(this, this.Handle), NativeMethods.WM_NULL, IntPtr.Zero, IntPtr.Zero); 3189if (item.hItem != IntPtr.Zero) { 3275m.Result = IntPtr.Zero; 3290if(hnode != IntPtr.Zero) { 3321hNodeMouseDown = IntPtr.Zero;

winforms\Managed\System\WinForms\UnsafeNativeMethods.cs (21)

1665IntPtr pBytes = IntPtr.Zero; 1668int regionDataSize = GetRegionData(new HandleRef(null, hRgn), 0, IntPtr.Zero); 1693if (pBytes != IntPtr.Zero) { 6659if (buffer == IntPtr.Zero) throw new OutOfMemoryException(); 7365public IntPtr hpal = IntPtr.Zero; 7506public IntPtr hdr_hwndFrom = IntPtr.Zero; 7507public IntPtr hdr_idFrom = IntPtr.Zero; 7510public IntPtr lpOFN = IntPtr.Zero; 7511public IntPtr pszFile = IntPtr.Zero; 7639IntPtr path = IntPtr.Zero; 8136IntPtr current = IntPtr.Zero; 8155IntPtr userCookie = IntPtr.Zero; 8164userCookie = IntPtr.Zero; 8177if (userCookie != IntPtr.Zero && OSFeature.Feature.IsPresent(OSFeature.Themes)) 8182userCookie = IntPtr.Zero; 8258public IntPtr hProcess = IntPtr.Zero; 8260public IntPtr hThread = IntPtr.Zero; 8973IntPtr module = IntPtr.Zero; 8979if (kernel32 != IntPtr.Zero) { 8980if (GetProcAddress(new HandleRef(null, kernel32), "AddDllDirectory") != IntPtr.Zero) { 8981module = LoadLibraryEx(libraryName, IntPtr.Zero, NativeMethods.LOAD_LIBRARY_SEARCH_SYSTEM32);

winforms\Managed\System\WinForms\UserControl.cs (1)

293if (hwndFocus == IntPtr.Zero) return false;

winforms\Managed\System\WinForms\VisualStyles\VisualStyleRenderer.cs (18)

77supported = (hTheme != IntPtr.Zero); 122if (hTheme != IntPtr.Zero) { 276DrawBackground(dc, bounds, IntPtr.Zero); 289if (IntPtr.Zero != hWnd) { 307DrawBackground(dc, bounds, clipRectangle, IntPtr.Zero); 323if (IntPtr.Zero != hWnd) { 449if (childControl.Handle != IntPtr.Zero) { 568IntPtr hRegion = IntPtr.Zero; 578 if (hRegion == IntPtr.Zero) { 738return GetPartSize(dc, type, IntPtr.Zero); 755if (DpiHelper.EnableDpiChangedMessageHandling && (IntPtr.Zero != hWnd)) { 1103return IntPtr.Zero; 1116private IntPtr _hTheme = IntPtr.Zero; 1129return Create(className, throwExceptionOnFail, new HandleRef(null, IntPtr.Zero)); 1134IntPtr hTheme = IntPtr.Zero; 1158if (hTheme == IntPtr.Zero) { 1170if (_hTheme != IntPtr.Zero) { 1172_hTheme = IntPtr.Zero;

winforms\Managed\System\WinForms\WebBrowser.cs (7)

862this.AxIWebBrowser2.ExecWB(NativeMethods.OLECMDID.OLECMDID_PRINT, NativeMethods.OLECMDEXECOPT.OLECMDEXECOPT_DONTPROMPTUSER, ref nullObjectArray, IntPtr.Zero); 963this.AxIWebBrowser2.ExecWB(NativeMethods.OLECMDID.OLECMDID_PAGESETUP, NativeMethods.OLECMDEXECOPT.OLECMDEXECOPT_PROMPTUSER, ref nullObjectArray, IntPtr.Zero); 985this.AxIWebBrowser2.ExecWB(NativeMethods.OLECMDID.OLECMDID_PRINT, NativeMethods.OLECMDEXECOPT.OLECMDEXECOPT_PROMPTUSER, ref nullObjectArray, IntPtr.Zero); 1006this.AxIWebBrowser2.ExecWB(NativeMethods.OLECMDID.OLECMDID_PRINTPREVIEW, NativeMethods.OLECMDEXECOPT.OLECMDEXECOPT_PROMPTUSER, ref nullObjectArray, IntPtr.Zero); 1026this.AxIWebBrowser2.ExecWB(NativeMethods.OLECMDID.OLECMDID_PROPERTIES, NativeMethods.OLECMDEXECOPT.OLECMDEXECOPT_PROMPTUSER, ref nullObjectArray, IntPtr.Zero); 1048this.AxIWebBrowser2.ExecWB(NativeMethods.OLECMDID.OLECMDID_SAVEAS, NativeMethods.OLECMDEXECOPT.OLECMDEXECOPT_DODEFAULT, ref nullObjectArray, IntPtr.Zero); 1202return hwndFocus != IntPtr.Zero

winforms\Managed\System\WinForms\WebBrowserBase.cs (5)

68private IntPtr hwndFocus = IntPtr.Zero; 392msg.hwnd = IntPtr.Zero; 478hwndFocus = IntPtr.Zero; 668return IsHandleCreated ? Handle : IntPtr.Zero; 744int hr = this.axOleObject.DoVerb(verb, IntPtr.Zero, this.ActiveXSite, 0, this.Handle,

winforms\Managed\System\WinForms\WebBrowserHelper.cs (2)

118if (hDC != IntPtr.Zero) { 136if (hDC != IntPtr.Zero) {

winforms\Managed\System\WinForms\WebBrowserSiteBase.cs (3)

229if (hwnd != IntPtr.Zero) { 315lpFrameInfo.hAccel = IntPtr.Zero; 317lpFrameInfo.hwndFrame = (this.Host.ParentInternal == null) ? IntPtr.Zero : this.Host.ParentInternal.Handle;

winforms\Managed\System\WinForms\WinFormsUtils.cs (6)

193if (hwnd == IntPtr.Zero) { 610if (hDC.Handle == IntPtr.Zero) { 631Debug.Assert(hClippingRegion.Handle != IntPtr.Zero, "CreateRectRgn() failed."); 637Debug.Assert(hOriginalClippingRegion.Handle != IntPtr.Zero, "CreateRectRgn() failed."); 672hOriginalClippingRegion = new HandleRef(null, IntPtr.Zero); 700if (hOriginalClippingRegion.Handle != IntPtr.Zero) {