Was this page helpful?
Your feedback about this content is important. Let us know what you think.
Additional feedback?
1500 characters remaining
Export (0) Print
Expand All
Expand Minimize

ValidateRgn (Compact 2013)

3/28/2014

This function validates the client area within a region by removing the region from the current update region of the specified window.


BOOL WINAPI ValidateRgn(
  HWND hWnd,
  HRGN hRgn
);

hWnd

[in] Handle to the window for which you want to modify the update region.

hRgn

[in] Handle to a region that defines the area that you want to remove from the update region.

Set this parameter to NULL to remove the entire client area.

A nonzero value indicates success.

Zero indicates failure.

You must create the specified region by calling a region function, such as ExtCreateRegion.

ValidateRgn assumes that the region coordinates are client coordinates.

The BeginPaint function validates the entire client area.

Do not call ValidateRect or ValidateRgn if you require validation of a portion of the update region before the next WM_PAINT message is generated.

Header

windows.h

Library

coredll.lib

Show:
© 2015 Microsoft