CodingMan125 wrote:
Dear, List Members using the FindWindow function from win32gui to find
the window handle of a certain window through window name to enable
video capture of certain window results in a black screen. Although
trying the same code without a window handle to default it to
capturing the whole screen results in a successful video capture, the
same code however results in a black or white screen when trying to
capture a specific window with window handle. How can I solve this?
In general, you can't. From your description and from the comments in
the code, I'm assuming you're trying to capture some kind of multimedia
stream -- a movie playback or a camera live view. In that case, the
video stream is not actually contained in the application window.
Instead, the video is rendered in its native format (usually a YUV
format) into an offscreen region. That offscreen region is then used as
a texture surface which the GPU's 3D engine renders onto the visible
screen. The application window remains a solid color, which is used as
a chromakey (like a "green screen") to allow menus to be easily drawn on
top.
--
Tim Roberts, t...@probo.com
Providenza & Boekelheide, Inc.
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