| BCGCBPRODLLEXPORT UINT BCGM_GRID_ITEM_COMMAND_CLICK |
This registered windows message is sent to the grid's owner window by the default implementation of CBCGPGridCtrl::OnClickItemCommandIcon.
| wParam | ID of Grid Control that sent the message |
| lParam | a reference to BCGPGRID_ITEM_INFO structure, which describes the grid item. |