How to retrieve the attached monitors count for stretched/span mode?

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C++

Windows

SDK

I'm trying to retrieve the no. of monitors being connected to a CPU.

Suppose, i've a system with 4 outputs being connected in Stretched mode and all 4 outputs together showing as a single screen. When i query the connected outputs count using any of the below methods i'm getting the response as "1".

"EnumDisplayDevicesA" method returns DISPLAY_DEVICE.StateFlag as DISPLAY_DEVICE_ATTACHED_TO_DESKTOP for only one display.

"EnumDisplayMonitors(NULL, NULL, MonitorEnumProc, (LPARAM)&Count)" method also returns 1 output being connected

GetSystemMetrics(SM_CMONITORS) method also returns 1 output being connected

Is there any provision to identify the no. of monitors being connected regardless of the mode it is being configured? or

Is there a way to identify, How many monitors attached to the Primary screen when it is configured span/stretched mode?

when 3 displays are connected (for a QUAD output PC) in Individual/Extended mode i'm getting the below output:

Device: \\.\DISPLAY1 is active. Flags: 5
Device: \\.\DISPLAY1 is primary. Flags: 5
Device: \\.\DISPLAY1 is attached to the desktop. Flags: 5
Device: \\.\DISPLAY2 is active. Flags: 1
Device: \\.\DISPLAY2 is attached to the desktop. Flags: 1
Device: \\.\DISPLAY3 is active. Flags: 1
Device: \\.\DISPLAY3 is attached to the desktop. Flags: 1
Device: \\.\DISPLAY4 is not attached. Flags: 0
Device: \\.\DISPLAYV1 is a mirroring driver device. Flags: 8
Device: \\.\DISPLAYV2 is a mirroring driver device. Flags: 8
4 monitors detected, 3 attached to the desktop, mirroring devices: 2

when the same 3 displays are connected (for a QUAD output PC) in Span/Stretch/Duplicate mode i'm getting below output:

Device: \\.\DISPLAY1 is active. Flags: 5
Device: \\.\DISPLAY1 is primary. Flags: 5
Device: \\.\DISPLAY1 is attached to the desktop. Flags: 5
Device: \\.\DISPLAY2 is not attached. Flags: 0
Device: \\.\DISPLAY3 is not attached. Flags: 0
Device: \\.\DISPLAY4 is not attached. Flags: 0
Device: \\.\DISPLAYV1 is a mirroring driver device. Flags: 8
Device: \\.\DISPLAYV2 is a mirroring driver device. Flags: 8
4 monitors detected, 1 attached to the desktop, mirroring devices: 2

My code piece looking like below:

// I need to get the address of a few multi-monitor functions
	//
	HMODULE user32 = GetModuleHandle ("User32.DLL");
	typedef BOOL WINAPI tEnumDisplayDevices (void*, DWORD, DISPLAY_DEVICE*, DWORD);
	tEnumDisplayDevices* fEnumDisplayDevices = (tEnumDisplayDevices*) GetProcAddress (user32, "EnumDisplayDevicesA");
	if (fEnumDisplayDevices == NULL) return false;

	/*int fResult;
	fResult = GetSystemMetrics(SM_CMONITORS);*/

	// count the number of monitors attached to the system
	//
	int numMirrorDevices = 0, numMonitorsAttached = 0, numMonitorsTotal = 0;
	DISPLAY_DEVICE dd;	dd.cb = sizeof(dd);
	for (DWORD dev=0;  fEnumDisplayDevices (NULL, dev, &dd, 0);  ++dev)
	{
		if (dd.StateFlags & DISPLAY_DEVICE_ACTIVE)
		{
			LOG_INFO (funcName << ": Device: " << dd.DeviceName << " is active. Flags: " << dd.StateFlags);
		}
		if (dd.StateFlags & DISPLAY_DEVICE_PRIMARY_DEVICE)
		{
			LOG_INFO (funcName << ": Device: " << dd.DeviceName << " is primary. Flags: " << dd.StateFlags);
		}
		if (dd.StateFlags & DISPLAY_DEVICE_REMOVABLE)
		{
			LOG_INFO (funcName << ": Device: " << dd.DeviceName << " is removable. Flags: " << dd.StateFlags);
		}
		if (dd.StateFlags & DISPLAY_DEVICE_VGA_COMPATIBLE)
		{
			LOG_INFO (funcName << ": Device: " << dd.DeviceName << " is VGA. Flags: " << dd.StateFlags);
		}
		if (dd.StateFlags & DISPLAY_DEVICE_MODESPRUNED)
		{
			LOG_INFO (funcName << ": Device: " << dd.DeviceName << " is more dsiplay modes. Flags: " << dd.StateFlags);
		}
		if (dd.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER)
		{
			LOG_INFO (funcName << ": Device: " << dd.DeviceName << " is a mirroring driver device. Flags: " << dd.StateFlags);
			numMirrorDevices++;
			continue;
		}
		if (dd.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)
		{
			LOG_INFO (funcName << ": Device: " << dd.DeviceName << " is attached to the desktop. Flags: " << dd.StateFlags);
			numMonitorsAttached++;
		}
		else
		{
			LOG_INFO (funcName << ": Device: " << dd.DeviceName << " is not attached. Flags: " << dd.StateFlags);
		}
		numMonitorsTotal++;
	}
	
	LOG_INFO (funcName << ": " << numMonitorsTotal << " monitors detected, " << numMonitorsAttached 
		<< " attached to the desktop, mirroring devices: " << numMirrorDevices);

Please guide me in identifying the right monitor count.

Thanks in advance.