video abnormal with d3dvideosink with created gtk window on windows 10 platform

[Jiang Pin]

If we create use gtk to create a window and use
gst_video_overlay_set_window_handle
to set window id  to d3dvideosink. The video is played but the looks alpha
blended with background window.
Is this a gstreamer problem or gtk problem? 

If I use glimagesink the problem is solved but the glimagesink is not
resized when the window resizing. 

 



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