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.