Cpp Detect connected monitor in windows 10

Question

I have 2 projectors, usually disconnected from the electricity. For play videos I am using KODI to play videos. He has sources C++ available that I process for my needs.

When running KODI, I switch screens to extended mode.

SetDisplayConfig( 0, NULL, 0, NULL, SDC_TOPOLOGY_EXTEND | SDC_APPLY );

But this only works if both screens are detected by the system. In a situation where the screens are not detected by the system, I have to enter the display settings and click "detection" before running KODI.

How to do this detection in C++?

I tried:

bool IsDisplayConnected(int displayIndex)
{
    DISPLAY_DEVICE device;
    device.cb = sizeof(DISPLAY_DEVICE);
    return EnumDisplayDevices(NULL, displayIndex, &device, 0);
}
IsDisplayConnected(0);
IsDisplayConnected(1);

But nothing is happening. The system does not try to detect the screens.