change the display setting in windows 10

Question

Hi,

I have two display ports in integrated system. Based on the ports ID i need to clone or extend the displays Programatically in C++.

Is any one have an idea how to clone and extend the displays? Do we have any Windows API to do it?

I have used 'EnumDisplayDevices() function to get the display info like DeviceID(Port ID) so based on the Port ID i need to clone or extend.

I have used SetDisplayConfig() API but which doesn't take Deviced ID.

Any help would be appreciated.

Thanks,

Answer 1

Hello,

For how to clone you can refer to this thread.

There is a target identifier in every path. Through this target identifier you can get monitorDevicePath using DisplayConfigGetDeviceInfo. Which contains information you can find in DeviceID.

For example:

From above snapshots we can see the shared information DELF06B which you can use to match a target of a display path to the DeviceID.

Code piece of getting monitorDevicePath:

	DISPLAYCONFIG_TARGET_DEVICE_NAME configInfo;  
	memset(&configInfo, 0, sizeof(configInfo));  
	configInfo.header.type = DISPLAYCONFIG_DEVICE_INFO_GET_TARGET_NAME;  
	configInfo.header.id = pathArray[i].targetInfo.id;  
	configInfo.header.size = sizeof(DISPLAYCONFIG_TARGET_DEVICE_NAME);  
	configInfo.header.adapterId = pathArray[i].targetInfo.adapterId;  

	LONG retVal = DisplayConfigGetDeviceInfo((DISPLAYCONFIG_DEVICE_INFO_HEADER*)&configInfo);  

Thank you!