private static void InitializeSupportedDisplayModes()
{
var stop = false;
var index = 0;
while (!stop)
{
DEVMODE1 dm = new DEVMODE1();
dm.dmDeviceName = new String(new char[32]);
dm.dmFormName = new String(new char[32]);
dm.dmSize = (short)Marshal.SizeOf(dm);
var ret = NativeMethods.EnumDisplaySettings(null, index, ref dm);
index++;
if (ret == 0)
{
stop = true;
}
else
{
if (dm.dmDisplayFrequency >= 60 && dm.dmBitsPerPel >= 30)
{
if (!SupportedDisplayModes.ContainsKey(dm.ToString()))
{
SupportedDisplayModes.Add(dm.ToString(), dm);
}
}
}
}
}
public static bool ChangeResolution(ref DEVMODE1 mode)
{
int iRet = NativeMethods.ChangeDisplaySettings(ref mode, NativeMethods.CDS_TEST);
if (iRet == NativeMethods.DISP_CHANGE_FAILED)
{
return(false);
}
iRet = NativeMethods.ChangeDisplaySettings(ref mode, NativeMethods.CDS_NONE);
switch (iRet)
{
case NativeMethods.DISP_CHANGE_SUCCESSFUL:
break;
case NativeMethods.DISP_CHANGE_RESTART:
//windows 9x series you have to restart
default:
return(false);
}
return(true);
}
public static extern int ChangeDisplaySettings(ref DEVMODE1 devMode, int flags);
public static extern int EnumDisplaySettings(string deviceName, int modeNum, ref DEVMODE1 devMode);
