Features of DwmSetIconicLivePreviewBitmap

My C++ application runs both full-screen and windowed mode. In windowed mode DWM related functions work fine. After switching to full screen, I get WM_DWMSENDICONICLIVEPREVIEWBITMAP request with lParam that contains 200 width and the height of 107 which are too small.

The docs say I can't give an image larger than the dimensions. I have a small image so provide. It shows correctly. But it is too small.

How can I control these settings?

This issue is beyond the scope of this site (for consumers) and to be sure, you get the best (and fastest) reply, we have to ask either on Technet (for IT Pro) or MSDN (for developers)
*

Tags: Windows

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