public bool XDD_GetActiveAttachedMonitor(
ref DISPLAY_DEVICE ddMonitor // 输出ddMonitor信息
)
{
// 枚举Adapter下Monitor用变量
int dwMonitorIndex = 0;
DISPLAY_DEVICE ddMonEmpty = new DISPLAY_DEVICE();
DISPLAY_DEVICE ddMonTmp = new DISPLAY_DEVICE();
// 枚举Adapter
int dwAdapterIndex = 0;
DISPLAY_DEVICE ddAdapter = new DISPLAY_DEVICE();
ddAdapter.cb = System.Runtime.InteropServices.Marshal.SizeOf(typeof(DISPLAY_DEVICE));
while (WindowsAPI.EnumDisplayDevices(null, dwAdapterIndex, ref ddAdapter, 0) != false)
{
// 枚举该Adapter下的Monitor
dwMonitorIndex = 0;
ddMonTmp = ddMonEmpty;
ddMonTmp.cb = System.Runtime.InteropServices.Marshal.SizeOf(typeof(DISPLAY_DEVICE));
while (WindowsAPI.EnumDisplayDevices(ddAdapter.DeviceName, dwMonitorIndex, ref ddMonTmp, 0) != false)
{
// 判断状态是否正确
if ((ddMonTmp.StateFlags & CommonConst.DISPLAY_DEVICE_ACTIVE) == CommonConst.DISPLAY_DEVICE_ACTIVE &&
(ddMonTmp.StateFlags & CommonConst.DISPLAY_DEVICE_ATTACHED) == CommonConst.DISPLAY_DEVICE_ATTACHED
)
{
ddMonitor = ddMonTmp;
return(true);
}
// 下一个Monitor
dwMonitorIndex += 1;
ddMonTmp = ddMonEmpty;
ddMonTmp.cb = System.Runtime.InteropServices.Marshal.SizeOf(typeof(DISPLAY_DEVICE));
}
// 下一个Adapter
dwAdapterIndex += 1;
ddAdapter = ddMonEmpty;
ddAdapter.cb = System.Runtime.InteropServices.Marshal.SizeOf(typeof(DISPLAY_DEVICE));
}
// 未枚举到满足条件的Monitor
return(false);
}