| 
 | virtual | 
Called by the framework when the tab area in tab window needs to be erased.
This function is called by the framework when a CBCGPTabWnd object processes WM_PAINT message and needs to erase the tab area.
Override this member function in a CBCGPVisualManager - derived class to customize look of tabs.
| pDC | A pointer to a device context. | 
| rect | Specifies the bounding rectangle of the tab to be erased. | 
| pTabWnd | Points to a tab window whose tab area is being erased. |