C# Signature:
[DllImport("user32.dll", SetLastError = true)]
static extern bool PostMessage(IntPtr hWnd, uint Msg, UIntPtr wParam,
IntPtr lParam);
User-Defined Types:
Declare Function PostMessage Lib "user32" (ByVal hwnd As IntPtr, _
ByVal wMsg As Integer, ByVal wParam As IntPtr, ByVal lParam As IntPtr) As Boolean
Notes:
MSDN says: If the function fails, the return value is zero. To get extended error information, call GetLastError.
Tips & Tricks:
Please add some!
Sample Code:
A wrapper for PostMessage looking for errors:
int PostMessageSafe( IntPtr hWnd, int msg, int wParam, int lParam )
{
int returnValue = PostMessage( hWnd, msg, wParam, lParam );
if( returnValue == 0 )
{
// An error occured
throw new Win32Exception( Marshal.GetLastWin32Error() );
}
return returnValue;
}
Alternative Managed API:
Do you know one? Please contribute it!
