win7下對顯示器的電源的操作

//關閉moniter的電源

sendMessage(HWND_BROADCAST,WM_SYSCOMMAND,SC_MONITORPOWER,(LPARAM)2);

//打開moniter的電源

sendMessage(HWND_BROADCAST,WM_SYSCOMMAND,SC_MONITORPOWER,(LPARAM)-1);

//low power moniter

SendMessage(HWND_BROADCAST,WM_SYSCOMMAND,SC_MONITORPOWER,(LPARAM)1);

在開始的時候要注冊電源通知消息

HANDLE g_hPowerNotify

GUID GUID_MON_POWER = GUID_MONITOR_POWER_ON;

g_hPowerNotify= RegisterPowerSettingNotification(g_hWnd,&GUID_MON_POWER,DEVICE_NOTIFY_WINDOW_HANDLE):

然後在窗口過程中

//當有電源狀態發生改變時。window會發這個消息出來

//當開機第一次進系統的時候。一般都會進入電源狀態改變的事件。

case WM_POWERBROADCAST:

{

if(wParam==PBT_POWERSETTINGCHANGE)

{

     POWERBROADCAST_SETTING* pps= (POWERBROADCAST_SETTING*)lParam;

     if(sizeof(DWORD)==pps->DataLength&&pps->PowerSetting ==GUID_MONITER_POWER_ON)

    {

       g_bLCDPwrOn = pps->Data[0];

    }
}

}

//在窗口銷毀中取消注冊

case WM_DESTROY

       UnregisterPowerSettingNotification(g_hPowerNotify);

//補充