使用MOUSE_INPUT_DATA驱动不了鼠标，咋回事？

哪位兄弟帮忙瞅瞅这个函数有啥问题，为啥调用了鼠标也不动呢？

其中的  (*(PSERVICE_CALLBACK_ROUTINE)DeviceExtension->ConnectData.ClassService) 在
IRP_MJ_INTERNAL_DEVICE_CONTROL的入口函数里面貌似成功获得了，可为啥就是驱动不了鼠标的动作呢？

// x,y是屏幕坐标
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
VOID SendToScreen( PDEVICE_EXTENSION DeviceExtension,
                       double x, double y)
{
    MOUSE_INPUT_DATA *pInputData = & DeviceExtension->InputData;
    ULONG               inputDataConsumed;
    KIRQL               oldIrql;

    RtlZeroMemory(pInputData, sizeof(MOUSE_INPUT_DATA));


    pInputData->LastX = (LONG)((x*65535)/DeviceExtension->scr_metric_x);
    pInputData->LastY = (LONG)((y*65535)/DeviceExtension->scr_metric_y);

    pInputData->Flags = MOUSE_MOVE_ABSOLUTE;
    pInputData->ButtonFlags = MOUSE_LEFT_BUTTON_DOWN;


     Print(DeviceExtension, DBG_CC_NOISE,
              ("mouse class call back.\n"));
    
    KeRaiseIrql(DISPATCH_LEVEL, &oldIrql);

    //
    // Call the callback.
    //
    (*(PSERVICE_CALLBACK_ROUTINE)
     DeviceExtension->ConnectData.ClassService) (
         DeviceExtension->ConnectData.ClassDeviceObject,
         pInputData,
         //NULL,//&InputData + 1,
         pInputData + 1,
         &inputDataConsumed);

    //
    // Restore the previous IRQL right away.
    //
    KeLowerIrql(oldIrql);

    if (1 != inputDataConsumed)
    {
        //
        // oh well, the packet was not consumed, just drop it
        //
        Print(DeviceExtension, DBG_READ_ERROR,
              ("packet not consumed!!!\n"));
    }

}