// helper for creating an initialized DEVMODE structure
public static DEVMODE CreateDevmode()
{
DEVMODE dm = new DEVMODE();
dm.dmDeviceName = new String(new char[32]);
dm.dmFormName = new String(new char[32]);
dm.dmSize = (short)Marshal.SizeOf(dm);
return dm;
}
public static extern int EnumDisplaySettings(string lpszDeviceName, int iModeNum, ref DEVMODE lpDevMode);
public static extern int ChangeDisplaySettings(ref DEVMODE lpDevMode, int dwFlags);