Detect fullscreen with Win32 API?

[vefatica]

How can I detect whether the CASCADIA_HOSTING_WINDOW_CLASS class window is full screen using the Win32 API? Thanks.

[lhecker]

I think something like that should work:

static bool isFullscreen(HWND hwnd)
{
    MONITORINFO info = { .cbSize = sizeof(MONITORINFO) };
    if (!GetMonitorInfoW(MonitorFromWindow(hwnd, MONITOR_DEFAULTTOPRIMARY), &info)) {
        return false;
    }

    RECT rect;
    if (!GetWindowRect(hwnd, &rect)) {
        return false;
    }

    return memcmp(&rect, &info.rcMonitor, sizeof(RECT)) == 0;
}

[vefatica]

Thanks!