哈哈,这问题太简单了:
SHELL_PostMessage(g_hWnd, (SPM_UM_DoNotWaitForCrit<<16 and g_uMouseMSG),
(WORD)state,(DWORD)(wDeltaY<<16 and wDeltaX),NULL,0);
g_hWnd为Ring 3环的窗口句柄,g_uMouseMSG为消息值(如果消息是自定义的话,要在Ring 3的程序中给登记上)。state是WPARAM,为16位,,(DWORD)(wDeltaY<<16 and wDeltaX)为32位的LPARAM,至于NULL,0就看看帮助啦,一般用不上。
这一句是向Ring 3程序发送鼠标数据。