Changing the Toolbar State

Start with the project you created in Implementing Toolbars - Initializing, Creating and Freeing.

1. Create the following Menus in ToolbarTutorial.rc:

    &View   
         &Toolbar with ID = IDM_VIEW_TOOLBAR   
      &Rows   
         &1 with ID = IDM_ROWS_1   
         &2 with ID = IDM_ROWS_2   
         &3 with ID = IDM_ROWS_3   
         &4 with ID = IDM_ROWS_4   
         &5 with ID = IDM_ROWS_5   
         &6 with ID = IDM_ROWS_6   
         &8 with ID = IDM_ROWS_8   
      &Set Position   
         Test &1 with ID = IDM_SETPOSITION_TEST1   
         Test &2 with ID = IDM_SETPOSITION_TEST2   
         Test &3 with ID = IDM_SETPOSITION_TEST3   
         Test &4 with ID = IDM_SETPOSITION_TEST4   

2. Add the following function calls to the WndProc function definition, after the L_TBSetVisible function call in the WM_CREATE message:

   CheckMenuItem ( GetMenu ( hWnd ),   
       IDM_VIEW_TOOLBAR,   
       MF_BYCOMMAND | MF_CHECKED ) ;   
   CheckMenuRadioItem ( GetMenu ( hWnd ),   
       IDM_ROWS_1,   
       IDM_ROWS_8,   
       IDM_ROWS_1,   
       MF_BYCOMMAND ) ;   
   CheckMenuRadioItem ( GetMenu ( hWnd ),   
       IDM_SETPOSITION_TEST1,   
       IDM_SETPOSITION_TEST4,   
       IDM_SETPOSITION_TEST1,   
       MF_BYCOMMAND ) ; 

3. Add the following functions before the WndProc function definition:

   static L_VOID OnViewToolbar ( pTOOLBARHANDLE pToolbar ) 
   { 
      L_BOOL bVisible ; 
      L_TBIsVisible ( pToolbar, &bVisible ) ; 
      L_TBSetVisible ( pToolbar, ! bVisible ) ; 
   } 
   static L_VOID OnRows ( pTOOLBARHANDLE pToolbar, L_INT nRows ) 
   { 
      L_TBSetRows ( pToolbar, nRows ) ; 
   } 
   static L_VOID OnSetPoistionTest ( HWND hWnd, pTOOLBARHANDLE pToolbar, L_INT nTest ) 
   { 
      RECT rcClient ; 
      POINT pt ; 
       
      GetClientRect ( hWnd, &rcClient ) ; 
      switch ( nTest ) 
      { 
         case 1: 
         pt.x = rcClient.left ; 
         pt.y = rcClient.top ; 
         ClientToScreen ( hWnd, &pt ) ; 
         L_TBSetPosition ( pToolbar, &pt, TOOLBAR_POSITION_TOP | TOOLBAR_POSITION_LEFT ) ; 
         break ; 
         case 2: 
         pt.x = rcClient.right ; 
         pt.y = rcClient.top ; 
         ClientToScreen ( hWnd, &pt ) ; 
         L_TBSetPosition ( pToolbar, &pt, TOOLBAR_POSITION_TOP | TOOLBAR_POSITION_RIGHT ) ; 
         break ; 
         case 3: 
         pt.x = rcClient.right ; 
         pt.y = rcClient.bottom ; 
          
         ClientToScreen ( hWnd, &pt ) ; 
         L_TBSetPosition ( pToolbar, &pt, TOOLBAR_POSITION_BOTTOM | TOOLBAR_POSITION_RIGHT ) ; 
         break ; 
         case 4: 
         pt.x = rcClient.left ; 
         pt.y = rcClient.bottom ; 
          
         ClientToScreen ( hWnd, &pt ) ; 
         L_TBSetPosition (pToolbar, &pt, TOOLBAR_POSITION_BOTTOM | TOOLBAR_POSITION_LEFT); 
         break ; 
      } 
   } 

4. Add the following variable declaration in the WndProc function after static pTOOLBARHANDLE pToolbar ; declaration:

   L_BOOL fState ; 

5. Add the following code to the WndProc function definition after the return 0L ; statement in the case WM_DESTROY message:

   case WM_COMMAND: 
   { 
      switch ( LOWORD ( wParam ) ) 
      { 
         case IDM_VIEW_TOOLBAR: 
         OnViewToolbar ( pToolbar ) ; 
         L_TBIsVisible ( pToolbar, &fState ) ; 
         CheckMenuItem ( GetMenu ( hWnd ), 
         IDM_VIEW_TOOLBAR, 
         MF_BYCOMMAND | ( fState ? MF_CHECKED : MF_UNCHECKED ) ) ; 
         return 0L ; 
         case IDM_ROWS_1: 
         OnRows ( pToolbar, 1 ) ; 
         CheckMenuRadioItem ( GetMenu ( hWnd ), 
         IDM_ROWS_1, 
         IDM_ROWS_8, 
         IDM_ROWS_1, 
         MF_BYCOMMAND ) ; 
         return 0L ; 
         case IDM_ROWS_2: 
         OnRows ( pToolbar, 2 ) ; 
         CheckMenuRadioItem ( GetMenu ( hWnd ), 
         IDM_ROWS_1, 
         IDM_ROWS_8, 
         IDM_ROWS_2, 
         MF_BYCOMMAND ) ; 
         return 0L ; 
         case IDM_ROWS_3: 
         OnRows ( pToolbar, 3 ) ; 
         CheckMenuRadioItem ( GetMenu ( hWnd ), 
         IDM_ROWS_1, 
         IDM_ROWS_8, 
         IDM_ROWS_3, 
         MF_BYCOMMAND ) ; 
         return 0L ; 
         case IDM_ROWS_4: 
         OnRows ( pToolbar, 4 ) ; 
          
         CheckMenuRadioItem ( GetMenu ( hWnd ), 
         IDM_ROWS_1, 
         IDM_ROWS_8, 
         IDM_ROWS_4, 
         MF_BYCOMMAND ) ; 
         return 0L ; 
         case IDM_ROWS_5: 
         OnRows ( pToolbar, 5 ) ; 
         CheckMenuRadioItem ( GetMenu ( hWnd ), 
         IDM_ROWS_1, 
         IDM_ROWS_8, 
         IDM_ROWS_5, 
         MF_BYCOMMAND ) ; 
         return 0L ; 
         case IDM_ROWS_6: 
         OnRows ( pToolbar, 6 ) ; 
         CheckMenuRadioItem ( GetMenu ( hWnd ), 
         IDM_ROWS_1, 
         IDM_ROWS_8, 
         IDM_ROWS_6, 
         MF_BYCOMMAND ) ; 
         return 0L ; 
         case IDM_ROWS_8: 
         OnRows ( pToolbar, 7 ) ; 
         CheckMenuRadioItem ( GetMenu ( hWnd ), 
         IDM_ROWS_1, 
         IDM_ROWS_8, 
         IDM_ROWS_8, 
         MF_BYCOMMAND ) ; 
         return 0L ; 
         case IDM_SETPOSITION_TEST1: 
         OnSetPoistionTest ( hWnd, pToolbar, 1 ) ; 
         CheckMenuRadioItem ( GetMenu ( hWnd ), 
         IDM_SETPOSITION_TEST1, 
         IDM_SETPOSITION_TEST4, 
         IDM_SETPOSITION_TEST1, 
         MF_BYCOMMAND ) ; 
         return 0L ; 
         case IDM_SETPOSITION_TEST2: 
         OnSetPoistionTest ( hWnd, pToolbar, 2 ) ; 
         CheckMenuRadioItem ( GetMenu ( hWnd ), 
         IDM_SETPOSITION_TEST1, 
         IDM_SETPOSITION_TEST4, 
         IDM_SETPOSITION_TEST2, 
         MF_BYCOMMAND ) ; 
         return 0L ; 
         case IDM_SETPOSITION_TEST3: 
          
         OnSetPoistionTest ( hWnd, pToolbar, 3 ) ; 
         CheckMenuRadioItem ( GetMenu ( hWnd ), 
         IDM_SETPOSITION_TEST1, 
         IDM_SETPOSITION_TEST4, 
         IDM_SETPOSITION_TEST3, 
         MF_BYCOMMAND ) ; 
         return 0L ; 
         case IDM_SETPOSITION_TEST4: 
         OnSetPoistionTest ( hWnd, pToolbar, 4 ) ; 
         CheckMenuRadioItem ( GetMenu ( hWnd ), 
         IDM_SETPOSITION_TEST1, 
         IDM_SETPOSITION_TEST4, 
         IDM_SETPOSITION_TEST4, 
         MF_BYCOMMAND ) ; 
         return 0L ; 
      } 
   } 
   break ; 

6. Compile and run the project by selecting Build->Execute tutorial.exe from the menu.