[FFmpeg-trac] #10978(avdevice:new): gdigrab + hwnd doesn't seem to work

[FFmpeg]

#10978: gdigrab + hwnd doesn't seem to work
-------------------------------------+-------------------------------------
             Reporter:  Zhuo Zhang   |                     Type:  defect
               Status:  new          |                 Priority:  normal
            Component:  avdevice     |                  Version:
                                     |  unspecified
             Keywords:               |               Blocked By:
             Blocking:               |  Reproduced by developer:  0
Analyzed by developer:  0            |
-------------------------------------+-------------------------------------
 Summary of the bug:
 How to reproduce:
 {{{
 % ffmpeg -f gdigrab -framerate 30 -i hwnd=984566 test_hwnd.mp4
 ffmpeg -version
 ffmpeg version 7.0-full_build-www.gyan.dev Copyright (c) 2000-2024 the
 FFmpeg developers
 built with gcc 13.2.0 (Rev5, Built by MSYS2 project)
 }}}
 Patches should be submitted to the ffmpeg-devel mailing list and not this
 bug tracker.

 984566 is a valid window handle I got from win32gui.EnumWindows function.
 The specific error log was,
 [gdigrab @ 0000029ed0543580] Invalid window handle '984566', must be a
 valid integer.
 [in#0 @ 0000029ed0527600] Error opening input: Invalid argument

 I believe
 https://github.com/FFmpeg/FFmpeg/blame/master/libavdevice/gdigrab.c#L287
 always ends with this error. Let me know if this is a bug. Thanks!
-- 
Ticket URL: <https://trac.ffmpeg.org/ticket/10978>
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