public static ResolutionChangeResult ChangeTo(int width, int height)
{
var devMode = new DevMode {
DeviceName = new string(new char[32]), FormName = new string(new char[32])
};
devMode.Size = (short)Marshal.SizeOf(devMode);
if (User32.EnumDisplaySettings(null, (int)ResolutionChangeResult.EnumCurrentSettings, ref devMode))
{
devMode.PelsWidth = width;
devMode.PelsHeight = height;
var iRet = User32.ChangeDisplaySettings(ref devMode, (int)ResolutionChangeResult.CdsTest);
if (iRet == (int)ResolutionChangeResult.DisplayChangeFailed)
{
return(ResolutionChangeResult.DisplayChangeFailed);
}
iRet = User32.ChangeDisplaySettings(ref devMode, (int)ResolutionChangeResult.CdsUpdateRegistry);
return((ResolutionChangeResult)iRet);
}
return(ResolutionChangeResult.DisplayChangeFailed);
}
public static IList <DevMode> GetAllDevModes()
{
var modes = new List <DevMode>();
var devName = GetDeviceName(0);
var devMode = new DevMode();
var modeNum = 0;
bool result;
do
{
result = User32.EnumDisplaySettings(devName, modeNum, ref devMode);
if (result)
{
modes.Add(devMode);
}
modeNum++;
} while (result);
return
(modes.Where(dev => dev.BitsPerPel == modes.Max(d => d.BitsPerPel)).Distinct(new DevModeComparer()).
ToList());
}
public static extern bool EnumDisplaySettings(string deviceName, int modeNum, ref DevMode devMode);
public static extern int ChangeDisplaySettings(ref DevMode devMode, int flags);
