Using Container Objects

Start with the project you created in Setting Container Scaling Values:

1. Add the following popup menu structure to the main menu you created in the Implementing the Container - Initializing, Creating and Freeing tutorial.

   &Draw Object 
   &Point   with ID = IDM_DRAWOBJECT_POINT 
   &Line   with ID = IDM_DRAWOBJECT_LINE 
   &Square   with ID = IDM_DRAWOBJECT_SQUARE 
   &Rect   with ID = IDM_DRAWOBJECT_RECT 
   &Circle   with ID = IDM_DRAWOBJECT_CIRCLE 
   &Ellipse   with ID = IDM_DRAWOBJECT_ELLIPSE 
   P&olyline   with ID = IDM_DRAWOBJECT_POLYLINE 
   &Bezier   with ID = IDM_DRAWOBJECT_BEZIER 
   &Arc   with ID = IDM_DRAWOBJECT_ARC 
   &Text   with ID = IDM_DRAWOBJECT_TEXT 

2. Add the following code to the WndProc function just before the "return 0L ;" of the WM_CREATE message:

   CheckMenuRadioItem ( GetMenu ( hWnd ),  
      IDM_DRAWOBJECT_POINT,  
      IDM_DRAWOBJECT_TEXT, 
      IDM_DRAWOBJECT_POINT, 
      MF_BYCOMMAND ) ; 
   EnableMenuItem ( GetMenu ( hWnd ), 1, MF_BYPOSITION | MF_GRAYED ) ; 

3. Add the following lines to the WndProc function, after the container metrics block, in the "case IDM_FILE_OPEN" of the WM_COMMAND message:

   EnableMenuItem ( GetMenu ( hWnd ), 1, MF_BYPOSITION | MF_ENABLED ) ; 
   DrawMenuBar ( hWnd ) ; 

4. Add the following code to the WndProc function after the "return 0L;" statement of the "case IDM_FILE_EXIT:" statement:

   case IDM_DRAWOBJECT_POINT: 
      L_ContainerSetObjectType ( pContainer, CONTAINER_OBJECT_TYPE_POINT ) ; 
      CheckMenuRadioItem ( GetMenu ( hWnd ),  
         IDM_DRAWOBJECT_POINT,  
         IDM_DRAWOBJECT_TEXT, 
         IDM_DRAWOBJECT_POINT, 
         MF_BYCOMMAND ) ; 
      return 0L ; 
   case IDM_DRAWOBJECT_LINE: 
      L_ContainerSetObjectType ( pContainer, CONTAINER_OBJECT_TYPE_LINE ) ; 
      CheckMenuRadioItem ( GetMenu ( hWnd ),  
         IDM_DRAWOBJECT_POINT,  
         IDM_DRAWOBJECT_TEXT, 
         IDM_DRAWOBJECT_LINE, 
         MF_BYCOMMAND ) ; 
      return 0L ; 
   case IDM_DRAWOBJECT_SQUARE: 
      L_ContainerSetObjectType ( pContainer, CONTAINER_OBJECT_TYPE_SQUARE ) ; 
      CheckMenuRadioItem ( GetMenu ( hWnd ),  
         IDM_DRAWOBJECT_POINT,  
         IDM_DRAWOBJECT_TEXT, 
         IDM_DRAWOBJECT_SQUARE, 
         MF_BYCOMMAND ) ; 
      return 0L ; 
   case IDM_DRAWOBJECT_RECT: 
      L_ContainerSetObjectType ( pContainer, CONTAINER_OBJECT_TYPE_RECT ) ; 
      CheckMenuRadioItem ( GetMenu ( hWnd ),  
         IDM_DRAWOBJECT_POINT,  
         IDM_DRAWOBJECT_TEXT, 
         IDM_DRAWOBJECT_RECT, 
         MF_BYCOMMAND ) ; 
      return 0L ; 
   case IDM_DRAWOBJECT_CIRCLE: 
      L_ContainerSetObjectType ( pContainer, CONTAINER_OBJECT_TYPE_CIRCLE ) ; 
      CheckMenuRadioItem ( GetMenu ( hWnd ),  
         IDM_DRAWOBJECT_POINT,  
         IDM_DRAWOBJECT_TEXT, 
         IDM_DRAWOBJECT_CIRCLE, 
         MF_BYCOMMAND ) ; 
      return 0L ; 
   case IDM_DRAWOBJECT_ELLIPSE: 
      L_ContainerSetObjectType ( pContainer, CONTAINER_OBJECT_TYPE_ELLIPSE ) ; 
      CheckMenuRadioItem ( GetMenu ( hWnd ),  
         IDM_DRAWOBJECT_POINT,  
         IDM_DRAWOBJECT_TEXT, 
         IDM_DRAWOBJECT_ELLIPSE, 
         MF_BYCOMMAND ) ; 
      return 0L ; 
   case IDM_DRAWOBJECT_POLYLINE: 
      L_ContainerSetObjectType ( pContainer, CONTAINER_OBJECT_TYPE_POLYLINE ) ; 
      CheckMenuRadioItem ( GetMenu ( hWnd ),  
         IDM_DRAWOBJECT_POINT,  
         IDM_DRAWOBJECT_TEXT, 
         IDM_DRAWOBJECT_POLYLINE, 
         MF_BYCOMMAND ) ; 
      return 0L ; 
   case IDM_DRAWOBJECT_BEZIER: 
      L_ContainerSetObjectType ( pContainer, CONTAINER_OBJECT_TYPE_BEZIER ) ; 
      CheckMenuRadioItem ( GetMenu ( hWnd ),  
         IDM_DRAWOBJECT_POINT,  
         IDM_DRAWOBJECT_TEXT, 
         IDM_DRAWOBJECT_BEZIER, 
         MF_BYCOMMAND ) ; 
      return 0L ; 
   case IDM_DRAWOBJECT_ARC:    
      L_ContainerSetObjectType ( pContainer, CONTAINER_OBJECT_TYPE_ARC ) ;   
      CheckMenuRadioItem ( GetMenu ( hWnd ),  
         IDM_DRAWOBJECT_POINT,  
         IDM_DRAWOBJECT_TEXT, 
         IDM_DRAWOBJECT_ARC, 
         MF_BYCOMMAND ) ; 
      return 0L ; 
   case IDM_DRAWOBJECT_TEXT: 
      L_ContainerSetObjectType ( pContainer, CONTAINER_OBJECT_TYPE_TEXT ) ; 
      CheckMenuRadioItem ( GetMenu ( hWnd ),  
         IDM_DRAWOBJECT_POINT,  
         IDM_DRAWOBJECT_TEXT, 
         IDM_DRAWOBJECT_TEXT, 
         MF_BYCOMMAND ) ; 
      return 0L ;   

5. Compile and run the project by selecting Build->Rebuild Solution from the menu, and then Debug->Start Without Debugging.

6. Select File->Open and open any image. Select any of the items in the Draw Object popup menu and begin drawing objects in the container.