Using scrollbars

Sample task

The face

• Demonstration
• Issues:
  • The face
    • the biggest circle in the client are of the window
    • always centered
    • change the color using left vertical scrollbar
  • The smile
    • the width and the height modifiable using horizontal and vertical scrollbars
  • Pupils
    • follow mouse cursor
  • The size of the window
    • allow to change
    • always scale the face to the current size
    • minimum size: 200px x 200px
• Hints:
  • CreateWindow(), "SCROLLBAR"
  • SetScrollInfo(), GetScrollInfo()
  • WM_VSCROLL, WM_HSCROLL
  • WM_GETMINMAXINFO
  • atan2()