C#: Get complete desktop size?

Question

How do I find out the size of the entire desktop? Not the \"working area\" and not the \"screen resolution\", both of which refer to only o

Answer 1

To get the physical pixel size of the monitor you can use this.

static class DisplayTools
{
    [DllImport("gdi32.dll")]
    static extern int GetDeviceCaps(IntPtr hdc, int nIndex);

    private enum DeviceCap
    {
        Desktopvertres = 117,
        Desktophorzres = 118
    }

    public static Size GetPhysicalDisplaySize()
    {
        Graphics g = Graphics.FromHwnd(IntPtr.Zero);
        IntPtr desktop = g.GetHdc();

        int physicalScreenHeight = GetDeviceCaps(desktop, (int)DeviceCap.Desktopvertres);
        int physicalScreenWidth = GetDeviceCaps(desktop, (int)DeviceCap.Desktophorzres);

        return new Size(physicalScreenWidth, physicalScreenHeight);
    }


}