Windows

Changing windows' opacity

• Demonstration
• Functionality:
  • Create 64 windows positioned as in the demonstration application
    • The height of all windows is 50 pixels
    • The width of windows depends on the width of the screen, windows should fill the screen horizontally
    • It can be assumed that the width of the screen does not change during running of the application
    • The starting position of windows should be the top of the screen
  • Features of windows:
    • No caption bar
    • No border
    • The background color - the color of the active window's caption
    • Only one window visible on the task bar and in the task switch window (Alt+Tab)
  • Change opacity of windows as in the demonstration application
  • Allow to move all windows vertically (and only vertically) by dragging any of windows
• Hints:
  • GetSystemMetrics(SM_CXSCREEN)
  • WS_EX_LAYERED, SetLayeredWindowAttributes()
  • SetTimer(), WM_TIMER
  • WM_NCHITTEST
  • WM_MOVING
  • GetWindowRect(), MoveWindow()

• Approximate points:
  • 64 windows: 1.0
  • starting position of windows: 1.0
  • features of windows: 2.0
  • changing opacity of windows (as in the demonstration): 3.0
  • moving windows (only vertically, by dragging any window): 3.0

• Links for uploading (the password is the same as for results):
  • Solutions
  • Corrections