hResultGlobal = d3d->CreateDevice(D3DADAPTER_DEFAULT, D3DDEVTYPE_HAL,      						    mainWindowHandle, 				   	    D3DCREATE_HARDWARE_VERTEXPROCESSING |                                   D3DCREATE_DISABLE_DRIVER_MANAGEMENT_EX,					    &d3dpp,	 				    &d3dDevice);if(FAILED(hResultGlobal)){   switch(hResultGlobal)   {     case D3DERR_DEVICELOST: // The device has been lost but cannot be reset at                              // this time. Therefore, rendering is not possible.      {       // do something     }     break;     case D3DERR_INVALIDCALL: // The method call is invalid. For example, a                                    // method's parameter may have an invalid value.      {       // do something     }     break;     case D3DERR_NOTAVAILABLE: // This device does not support the queried                                      // technique.      {       // do something     }     break;     case D3DERR_OUTOFVIDEOMEMORY: // Direct3D does not have enough display                                         // memory to perform the operation.      {       // do something     }     break;}