Minimize to Tray

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• Functionality:
  • The application has one window with two lists of icons:
    • The left list contains icons and titles of all applications running in the system
    • The right list contains icons and titles of applications minimized to tray
  • Double click on an icon from the left list minimizes the application represented by the icon to tray
    • For each minimized to tray application:
      • Its big icon (32x32) and title appear on the right list
      • Its small icon (16x16) appears in the tray area. The context menu available for the icon visible in tray contains two options:
        • "Restore" - restores the application (makes its window visible)
        • "Close" - closes the application
      • Windows minimized to tray should be hidden
  • Double click on an icon from the right list shows the window represented by the icon and removes its icon from the tray area

• Hints:
  • Win32: EnumWindows, ShowWindow, IsWindowVisible, SendMessageTimeout, GetWindowText, GetClassLong
    • SW_HIDE (0), SW_SHOW (1), WM_CLOSE (0x0010)
  • The simplified algorithm for searching for main windows of applications running in the system:
    1. Call the EnumWindows function, as the first parameter pass a function (or method) which will be called for each top-level window found in the system
    2. For each found top-level window check if it is visible and has an icon
  • The simplified algorithm of getting window's icon:
    1. Use the SendMessageTimeout function with the SMTO_NORMAL (0) flag to send to a window the WM_GETICON (0x007F) message (use the ICON_BIG (1) value for a big icon or ICON_SMALL (0) for small)
    2. If the above way failed (the NULL value was received), get an icon of a window's class (call the GetClassLong function with the GCL_HICON (-14) value for a big icon or GCL_HICONSM (-34) for small)

• Approximate points:
  • A window with two listviews: 0.5
  • Getting top-level applications windows: 2.5
  • Getting windows' icons: 2.5
  • Presenting icons in listviews: 1.0
  • Adding icons to tray (including the context menu): 1.5
  • Restoring window from the tray area: 1.0
  • Synchronization of the content of both lists with the situation in the system (may be delayed): 1.0

• Links for uploading:
  • Solutions
  • Corrections