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.

Related Topics

Using the Container Object
Using the Container Callback
Help Version 22.0.2022.4.4
Products | Support | Contact Us | Intellectual Property Notices
© 1991-2022 LEAD Technologies, Inc. All Rights Reserved.

LEADTOOLS Container and Automation C API Help

Products | Support | Contact Us | Intellectual Property Notices
© 1991-2022 LEAD Technologies, Inc. All Rights Reserved.