2.1.27.30 UpdateWindow

1 Description
2 Syntax
3 Parameters
4 Return
5 Examples
6 Remark
7 See Also
8 Header to Include
9 Reference

Description

Updates the client area of the specified window.

Syntax

BOOL UpdateWindow( HWND hWnd )

Parameters

hWnd: [input] Handle to the window to be updated.

Return

Nonzero indicates success.

Zero indicates failure.

To get extended error information, call GetLastError.

Examples

Remark

The UpdateWindow function updates the client area of the specified window by sending a WM_PAINT message to the window if the window's update region is not empty. The function sends a WM_PAINT message directly to the window procedure of the specified window, bypassing the application queue. If the update region is empty, no message is sent.