| SendMessage(IWin32Window, WindowMessages, IntPtr, IntPtr) | Sends the specified message to the specified window. The SendMessage function calls the window procedure for the specified window and does not return until the window procedure has processed the message. |
| SendMessage(IWin32Window, Int32, IntPtr, IntPtr) | Sends the specified message to the specified window. The SendMessage function calls the window procedure for the specified window and does not return until the window procedure has processed the message. |