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.