Task no 6

Krzysztof Mossakowski Windows Programming 2005 - Tasks

Modeless dialog boxes

Version A

Dialog boxes with semitransparent 'glasses'

• Demonstration
• The main window:
  • menu:
    • Exit
    • Dialogs:
      • Red, Green, Blue
        • accelerators: Alt+R, Alt+G, Alt+B (show them in menu items)
        • the menu item is checked when the dialog is visible
        • clicking on unchecked menu item should check it and show appropriate dialog box
        • clicking on checked menu item should uncheck it and hide appropriate dialog box
        • closing the dialog box using 'Close' button should uncheck appropriate menu item
• Dialog boxes:
  • modeless
  • title - the name of the color
  • rectangle with dialog's color
    • using WM_DRAWITEM for drawing is obligatory
  • semitransparent 'glass' with dialog's color
  • button 'Close'
• Hints:
  • example of accelerator in menu item: "&Blue\tAlt+B"
  • GetMenu(), GetSubMenu(), CheckMenuItem()
  • CreateDialog(), CreateDialogParam()
  • CreateRectRgn(), CombineRgn(), SetWindowRgn()
  • transparent windows:
  • #define _WIN32_WINNT 0x0500
    before
    #include <windows.h>
  • WS_EX_LAYERED
  • SetLayeredWindowAttributes

• Approximate points:
  • menu (also checking and unchecking) and accelerators: 2.0
  • dialog boxes (one per menu item): 1.5
  • titles of dialog boxes: 0.5
  • rectangle with dialog's color: 1.5
  • semitransparent 'glass': 4.0
  • button 'Close': 0.5