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Dont attempt to read NULL MSG.lParam

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Kovid Goyal 2022-02-02 08:35:47 +05:30
parent 0eb829041d
commit 2d4b424dbd
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1 changed files with 1 additions and 1 deletions
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src/calibre/gui2/__init__.py
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@ -1621,7 +1621,7 @@ def nativeEventFilter(self, eventType, message):
if eventType == b"windows_generic_MSG":
msg = ctypes.wintypes.MSG.from_address(message.__int__())
# https://docs.microsoft.com/en-us/windows/win32/winmsg/wm-settingchange
if msg.message == 0x001A: # WM_SETTINGCHANGE
if msg.message == 0x001A and msg.lParam: # WM_SETTINGCHANGE
if ctypes.wstring_at(msg.lParam) == 'ImmersiveColorSet':
QApplication.instance().check_for_windows_palette_change()
# prevent Qt from handling this event