1 reference to SendMessage
System.Windows.Forms (1)
winforms\Managed\System\WinForms\RichTextBox.cs (1)
1518
return unchecked( (int) (long)UnsafeNativeMethods.
SendMessage
(new HandleRef(this, Handle), RichTextBoxConstants.EM_GETTEXTLENGTHEX, gtl, 0 /*ignored*/));