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  1. Qt
  2. QTBUG-96939

QWindowsTheme leaks palettes

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    Details

    • Type: Bug
    • Status: Reported
    • Priority: P3: Somewhat important
    • Resolution: Unresolved
    • Affects Version/s: 5.5.1
    • Fix Version/s: None
    • Component/s: QPA: Windows
    • Labels:
      None
    • Environment:
      Windows 10 remote desktop.
    • Platform/s:
      Windows

      Description

      When Windows switches themes (which happens when logging into a Remote Desktop connection to the machine, it seems), the following is called:

      void QWindowsTheme::refreshPalettes()

      { if (!QGuiApplication::desktopSettingsAware()) return; m_palettes[SystemPalette] = new QPalette(systemPalette()); m_palettes[ToolTipPalette] = new QPalette(toolTipPalette(*m_palettes[SystemPalette])); m_palettes[MenuPalette] = new QPalette(menuPalette(*m_palettes[SystemPalette])); m_palettes[MenuBarPalette] = menuBarPalette(*m_palettes[MenuPalette]); }

      > qwindowsd.dll!QWindowsTheme::refreshPalettes() Line 411 C++
      qwindowsd.dll!QWindowsTheme::refresh() Line 68 C++
      qwindowsd.dll!QWindowsTheme::windowsThemeChanged(QWindow * window=0x276478c0) Line 472 C++
      qwindowsd.dll!QWindowsContext::windowsProc(HWND__ * hwnd=0x009c1490, unsigned int message=21, QtWindows::WindowsEventType et=ThemeChanged, unsigned int wParam=0, long lParam=0, long * result=0x010fd220) Line 1087 C++
      qwindowsd.dll!qWindowsWndProc(HWND__ * hwnd=0x009c1490, unsigned int message=21, unsigned int wParam=0, long lParam=0) Line 1271 C++00004c

       

      Neither refreshPalettes() nor refresh() delete the existing palettes.

      In the latest version (6.2) the behavior seems to be the same, looking at the source code.

       

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            Assignee:
            owolff Oliver Wolff
            Reporter:
            mkentie Marijn Kentie
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              Dates

              Created:
              Updated:

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