Receiving Toolbar Events

Start with the project you created in Changing the Toolbar button State.

1. Add the following callback function before the WndProc function definition:

   L_INT EXT_CALLBACK LeadToolbarProc 
   ( 
   pTOOLBARHANDLE  pToolbar, 
   L_UINT  nButtonID, 
   L_UINT32        dwData, 
   L_VOID    *pUserData 
   ) 
   { 
      switch ( nButtonID ) 
      { 
         case ID_TOOL_PAINT_BRUSH: 
         { 
            MessageBox ( * ( HWND * ) pUserData, TEXT("BRUSH"), TEXT("Toolbar Message"), MB_OK ) ; 
         } 
         break ; 
         case ID_TOOL_PAINT_SHAPE_LINE: 
         { 
            MessageBox ( * ( HWND * ) pUserData, TEXT("LINE"), TEXT("Toolbar Message"), MB_OK ) ; 
         } 
         break ; 
         case ID_TOOL_PAINT_SHAPE_RECT: 
         { 
            MessageBox ( * ( HWND * ) pUserData, TEXT("RECT"), TEXT("Toolbar Message"), MB_OK ) ; 
         } 
         break ; 
         case ID_TOOL_PAINT_SHAPE_ROUNDRECT: 
         { 
            MessageBox ( * ( HWND * ) pUserData, TEXT("ROUND RECT"), TEXT("Toolbar Message"), MB_OK ) ; 
         } 
         break ; 
         case ID_TOOL_PAINT_SHAPE_BEZIER: 
         { 
            MessageBox ( * ( HWND * ) pUserData, TEXT("BEZIER"), TEXT("Toolbar Message"), MB_OK ) ; 
         } 
         break ; 
         case ID_TOOL_PAINT_REGION_RECT: 
         { 
            MessageBox ( * ( HWND * ) pUserData, TEXT("RECT"), TEXT("Toolbar Message"), MB_OK ) ; 
         } 
         break ; 
         case ID_TOOL_PAINT_FILL_SURFACE: 
         { 
            MessageBox ( * ( HWND * ) pUserData, TEXT("SURFACE"), TEXT("Toolbar Message"), MB_OK ) ; 
         } 
         break ; 
         case ID_TOOL_PAINT_TEXT: 
         { 
            MessageBox ( * ( HWND * ) pUserData, TEXT("TEXT"), TEXT("Toolbar Message"), MB_OK ) ; 
         } 
         break ; 
      } 
       
      return SUCCESS ; 
   } 

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

   // Set the toolbar callback with the owner window as the user defind data   
   L_TBSetCallback ( pToolbar, LeadToolbarProc, ( L_VOID  * ) &hwndMain ) ; 

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

 See Also:

Receiving Toolbar Events (Callback Functions)

Programming with LEADTOOLS Toolbars

Tutorials