I need to apply an Aero background blur to only part of a custom-shaped WPF window. The problem is that to apply the blur with DWM, I need to provide a window handle to the DwmEnableBlurBehindWindow
function.
I have been told that the WPF popup control is actually a separate window. That is good. Can I get a popup's handle to apply blur to it? If so, how?
Try this
HwndSource source = (HwndSource)HwndSource.FromVisual(myPopup)
or this but this one only works for actual Windows, but might help for future references.
IntPtr handle = new WindowInteropHelper(myWindow).Handle;