Skip owned window with WS_EX_LAYERED attribute when capturing with GDI.

When using GDI to capture windows, not only will the target window be
captured, but all owned windows of the target window will also be
captured, and the captured results of the owned windows will be drawn
onto the captured result of target window.

GDI (BitBlt or PrintWindow) cannot capture windows with WS_EX_LAYERED
attribute, so when the owned window has this attribute, the area of the
owned window in the result is black.

After modification, if the owned window has the WS_EX_LAYERED attribute,
it will not be captured or drawn.

Bug: webrtc:394380765
Change-Id: I5f0c7d31809a353377b0aa52452634b46247af5f
Reviewed-on: https://webrtc-review.googlesource.com/c/src/+/376360
Commit-Queue: Alexander Cooper <alcooper@chromium.org>
Reviewed-by: Joe Downing <joedow@chromium.org>
Reviewed-by: Alexander Cooper <alcooper@chromium.org>
Cr-Commit-Position: refs/heads/main@{#43851}
1 file changed
tree: 6c985cb340f76dd6fc4c034a720ae46b438f5e46
  1. api/
  2. audio/
  3. build_overrides/
  4. call/
  5. common_audio/
  6. common_video/
  7. data/
  8. docs/
  9. examples/
  10. experiments/
  11. g3doc/
  12. infra/
  13. logging/
  14. media/
  15. modules/
  16. net/
  17. p2p/
  18. pc/
  19. resources/
  20. rtc_base/
  21. rtc_tools/
  22. sdk/
  23. stats/
  24. system_wrappers/
  25. test/
  26. tools_webrtc/
  27. video/
  28. .clang-format
  29. .git-blame-ignore-revs
  30. .gitignore
  31. .gn
  32. .mailmap
  33. .style.yapf
  34. .vpython3
  35. AUTHORS
  36. BUILD.gn
  37. CODE_OF_CONDUCT.md
  38. codereview.settings
  39. DEPS
  40. DIR_METADATA
  41. ENG_REVIEW_OWNERS
  42. LICENSE
  43. license_template.txt
  44. native-api.md
  45. OWNERS
  46. OWNERS_INFRA
  47. PATENTS
  48. PRESUBMIT.py
  49. presubmit_test.py
  50. presubmit_test_mocks.py
  51. pylintrc
  52. pylintrc_old_style
  53. README.chromium
  54. README.md
  55. WATCHLISTS
  56. webrtc.gni
  57. webrtc_lib_link_test.cc
  58. whitespace.txt
README.md

WebRTC is a free, open software project that provides browsers and mobile applications with Real-Time Communications (RTC) capabilities via simple APIs. The WebRTC components have been optimized to best serve this purpose.

Our mission: To enable rich, high-quality RTC applications to be developed for the browser, mobile platforms, and IoT devices, and allow them all to communicate via a common set of protocols.

The WebRTC initiative is a project supported by Google, Mozilla and Opera, amongst others.

Development

See here for instructions on how to get started developing with the native code.

Authoritative list of directories that contain the native API header files.

More info