Question

I using EnumDisplayDevices that give me obtain information about the display devices in the current session.

But i need information about the display devices regardless of session. Because i create some windows service application (System process).

Does anybody know some alternative for this code:

vncDesktop::GetNrMonitors()
{
    if(OSversion()==3 || OSversion()==5) return 1;
    int i;
    int j=0;

    helper::DynamicFn<pEnumDisplayDevices> pd("USER32","EnumDisplayDevicesA"); // it's EnumDisplayDevices function

    if (pd.isValid())
    {
        DISPLAY_DEVICE dd;
        ZeroMemory(&dd, sizeof(dd));
        dd.cb = sizeof(dd);
        for (i=0; (*pd)(NULL, i, &dd, 0); i++)
            {
                if (dd.StateFlags & DISPLAY_DEVICE_ATTACHED_TO_DESKTOP)
                    if (!(dd.StateFlags & DISPLAY_DEVICE_MIRRORING_DRIVER))j++;
            }
    }
    return j;
}

Thanks in advance!

Answer 1

I found solution for this issue. Only need create process user – System and SessionID – some user. And then all working fine.