/// <summary>
/// Set the screen resolution to specified size. Will throw a <see cref="ResolutionChangeException" /> if unable to set to desired resolution.
/// </summary>
/// <exception cref="ResolutionChangeException" />
/// <param name="size">Desired screen resolution</param>
public static void SetScreenResolution(Size size)
{
DEVMODE1 dm = new DEVMODE1();
dm.dmDeviceName = new String(new char[32]);
dm.dmFormName = new String(new char[32]);
dm.dmSize = (short)Marshal.SizeOf(dm);
if (pInvoke.EnumDisplaySettings(null, DisplaySettingsConstants.ENUM_CURRENT_SETTINGS, ref dm) != 0)
{
dm.dmPelsWidth = size.Width;
dm.dmPelsHeight = size.Height;
int iRet = pInvoke.ChangeDisplaySettings(ref dm, DisplaySettingsConstants.CDS_TEST);
if (iRet == DisplaySettingsConstants.DISP_CHANGE_FAILED)
throw new ResolutionChangeException(
"Call to ChangeDisplaySettings with CDS_TEST failed");
else
{
iRet = pInvoke.ChangeDisplaySettings(ref dm, DisplaySettingsConstants.CDS_UPDATEREGISTRY);
switch (iRet)
{
case DisplaySettingsConstants.DISP_CHANGE_SUCCESSFUL:
return; // change successful
case DisplaySettingsConstants.DISP_CHANGE_RESTART:
throw new ResolutionChangeException(
"A reboot must take place for the changes to take affect");
default:
throw new ResolutionChangeException(
"Call to ChangeDisplaySettings with CDS_UPDATEREGISTRY failed");
}
}
}
throw new ResolutionChangeException("Error on call to Win32Support.EnumDisplaySettings");
}
/// <summary>
/// Set the screen resolution to specified size. Will throw a <see cref="ResolutionChangeException" /> if unable to set to desired resolution.
/// </summary>
/// <exception cref="ResolutionChangeException" />
/// <param name="size">Desired screen resolution</param>
public static void SetScreenResolution(Size size)
{
DEVMODE1 dm = new DEVMODE1();
dm.dmDeviceName = new String(new char[32]);
dm.dmFormName = new String(new char[32]);
dm.dmSize = (short)Marshal.SizeOf(dm);
if (pInvoke.EnumDisplaySettings(null, DisplaySettingsConstants.ENUM_CURRENT_SETTINGS, ref dm) != 0)
{
dm.dmPelsWidth = size.Width;
dm.dmPelsHeight = size.Height;
int iRet = pInvoke.ChangeDisplaySettings(ref dm, DisplaySettingsConstants.CDS_TEST);
if (iRet == DisplaySettingsConstants.DISP_CHANGE_FAILED)
{
throw new ResolutionChangeException(
"Call to ChangeDisplaySettings with CDS_TEST failed");
}
else
{
iRet = pInvoke.ChangeDisplaySettings(ref dm, DisplaySettingsConstants.CDS_UPDATEREGISTRY);
switch (iRet)
{
case DisplaySettingsConstants.DISP_CHANGE_SUCCESSFUL:
return; // change successful
case DisplaySettingsConstants.DISP_CHANGE_RESTART:
throw new ResolutionChangeException(
"A reboot must take place for the changes to take affect");
default:
throw new ResolutionChangeException(
"Call to ChangeDisplaySettings with CDS_UPDATEREGISTRY failed");
}
}
}
throw new ResolutionChangeException("Error on call to Win32Support.EnumDisplaySettings");
}
public static extern int ChangeDisplaySettings(ref DEVMODE1 devMode, int flags);
public static extern int EnumDisplaySettings(string deviceName, int modeNum, ref DEVMODE1 devMode);
public static extern int EnumDisplaySettings(string deviceName, int modeNum, ref DEVMODE1 devMode);
public static extern int ChangeDisplaySettings(ref DEVMODE1 devMode, int flags);