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Editorial Team
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Asked: 2026-05-16T12:43:07+00:00

My application has a standard top level window for the application. I need to

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My application has a standard top level window for the application. I need to force a repaint of the window chrome (otherwise known as the non-client area of the window). I do not care if the client area is also repainted or not but the chrome itself needs to be forced to repaint.

In particular I need this to work on Windows 7. Whether it works on other OS versions does not matter in my particular case. The solution can be C, C++, C# or any other language.

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1 Answer

  1. Editorial Team

    According to MSDN, it seems that

    RedrawWindow( hWnd, NULL, NULL, RDW_INVALIDATE | RDW_FRAME );

    is what you are looking for.

    RDW_FRAME causes any part of the nonclient area of the window that intersects the update region to receive a WM_NCPAINT message. The RDW_INVALIDATE flag must also be specified; otherwise, RDW_FRAME has no effect. The WM_NCPAINT message is typically not sent during the execution of RedrawWindow unless either RDW_UPDATENOW or RDW_ERASENOW is specified.

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