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並前往https://bugreports.qt.io/browse/QTBUG-83749?gerritReviewStatus=All

[#QTBUG-83749] Windows: Can't paint in WM_PAINT

For some reason, I need to paint something in WM_PAINT, but if I use BeginPaint in WM_PAINT in a QWindow/QWidget's nativeEvent function, ...

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查詢 「WM_PAINT」的人也找了：

  1. WM_COMMAND
    2.
  2. PeekMessage
    3.
  3. PAINTSTRUCT
    4.
  4. CreateWindowEx C++
    5.
  5. RedrawWindow
    6.
  6. WM_SIZE
    7.
  7. CreateWindow
    8.
  8. WM_PRINTCLIENT
    9.