Cross-sectional task

Version A

Two lines on a window

• Demonstration
• Two lines drawn on the main window
  • Resizable window with caption bar, menu, border etc.
  • Black background of the client area
  • Two red lines, the first between left-top and right-bottom corners, the second between right-top and left-bottom corners (window's corners, not client area's)
  • The window should always repaint properly
  • Flickering cannot be more visible than in the demonstration program
• Hints:
  • GetWindowDC(), ReleaseDC()
  • WM_PAINT, WM_NCPAINT
  • GetWindowRect(), GetClientRect(), ScreenToClient(), ClientToScreen()

• Approximate points:
  • accordance with requirements: 10