public static bool WindowIsFullscreen(IntPtr window)
{
var placement = new WINDOWPLACEMENT();
placement.length = Marshal.SizeOf(placement);
UnsafeNativeMethods.GetWindowPlacement(window, ref placement);
var workarea = SystemParameters.WorkArea;
string cname = GetClassName(window);
// ReSharper disable once CompareOfFloatsByEqualityOperator
return ((placement.showCmd == 1 && placement.minPosition.X == -1 && placement.minPosition.Y == -1 && placement.normalPosition.left == 0 && placement.normalPosition.top == 0 && placement.normalPosition.Width == workarea.Width && !(cname == "Progman" || cname == "WorkerW")));
}
internal static extern bool GetWindowPlacement(IntPtr hWnd, ref WINDOWPLACEMENT lpwndpl);