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DwmExtendFrameIntoClientArea without Aero Glass

Asked 2010-02-10T09:56:49.103
11

Using the DwmExtendFrameIntoClientArea API call with Aero Glass enabled works just fine. However, I want it to work when Aero Glass is disabled as well, like how it works in the Windows control panel:

enter image description here

Notice how the frame has extended into the client area, even though Aero Glass is disabled? When I make the DwmExtendFrameIntoClientArea API call in my application, the returned HRESULT is definitely not success, and my application ends up looking like this:

http://img197.imageshack.us/img197/9629/clientapplication.png

Normally, with Aero Glass enabled, the border stretches down to underneath the navigation buttons, like in the control panel. How do I do this? DwmExtendFrameIntoClientArea clearly isn't working.

By the way, if it is relevant, my application is a WPF application.

c# .net wpf aero dwm
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You have to paint it to be frame-like yourself.

You have to use DwmIsCompositionEnabled to check if the DWM is enabled and handle WM_DWMCOMPOSITIONCHANGED to detect DWM state changed.

Then you have to have to separate way of drawing the window, if DWM is enabled you use DwmExtendFrameIntoClientArea, if it's disabled you draw the "frame" yourself.

I have no idea how to duplicate the Aero frame in WPF (in my app I have my own color scheme and I'm not using the Auro frame).

This is annoying but when the DWM is disabled the system falls back to XP-style drawing and none of the DWM's services work - even those that aren't related to the glass effect.

answered 2010-03-10T10:36:20.973

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