Function nvapi_hi::sys::dispcontrol::NvAPI_DISP_GetAssociatedUnAttachedNvidiaDisplayHandle

pub unsafe fn NvAPI_DISP_GetAssociatedUnAttachedNvidiaDisplayHandle(
    szDisplayName: *const i8, 
    pNvUnAttachedDispHandle: *mut NvDisplayHandle
) -> i32

This function returns the handle of an unattached NVIDIA display that is associated with the given display name (such as "\DISPLAY1").