public static DisplayData GetCurrentDisplaySettings()
{
Win32.DEVMODE dmCurrent = new Win32.DEVMODE();
int ret = Win32.EnumDisplaySettings(null, Win32.ENUM_CURRENT_SETTINGS, ref dmCurrent);
return(new DisplayData(dmCurrent, true));
}
static bool IsEqual(Win32.DEVMODE x, Win32.DEVMODE y)
{
if (x.dmPelsHeight == y.dmPelsHeight &&
x.dmPelsWidth == y.dmPelsWidth &&
x.dmBitsPerPel == y.dmBitsPerPel &&
x.dmDisplayFrequency == y.dmDisplayFrequency &&
x.dmOrientation == y.dmOrientation &&
x.dmDeviceName == y.dmDeviceName)
{
return(true);
}
return(false);
;
}
public static int ChangeSettings(DisplayData data, out string err)
{
err = "";
Win32.DEVMODE devmode = data.Data;
Win32.ChangeDisplayFlags flags = Win32.ChangeDisplayFlags.CDS_UPDATEREGISTRY;
Win32.ReturnValues iRet = (Win32.ReturnValues)Win32.ChangeDisplaySettings(ref devmode, (int)flags);
switch (iRet)
{
case Win32.ReturnValues.DISP_CHANGE_SUCCESSFUL:
err = Win32.ReturnValueText.DISP_CHANGE_SUCCESSFUL;
break;
case Win32.ReturnValues.DISP_CHANGE_RESTART:
err = Win32.ReturnValueText.DISP_CHANGE_RESTART;
break;
case Win32.ReturnValues.DISP_CHANGE_FAILED:
err = Win32.ReturnValueText.DISP_CHANGE_FAILED;
break;
case Win32.ReturnValues.DISP_CHANGE_BADDUALVIEW:
err = Win32.ReturnValueText.DISP_CHANGE_BADDUALVIEW;
break;
case Win32.ReturnValues.DISP_CHANGE_BADFLAGS:
err = Win32.ReturnValueText.DISP_CHANGE_BADFLAGS;
break;
case Win32.ReturnValues.DISP_CHANGE_BADPARAM:
err = Win32.ReturnValueText.DISP_CHANGE_BADPARAM;
break;
case Win32.ReturnValues.DISP_CHANGE_NOTUPDATED:
err = Win32.ReturnValueText.DISP_CHANGE_NOTUPDATED;
break;
default:
err = Win32.ReturnValueText.DISP_CHANGE_OTHER;
break;
}
return((int)iRet);
}
public static IList <DisplayData> GetDisplaySettings()
{
Win32.DEVMODE dmCurrent = new Win32.DEVMODE();
int ret = Win32.EnumDisplaySettings(null, Win32.ENUM_CURRENT_SETTINGS, ref dmCurrent);
List <DisplayData> list = new List <DisplayData>();
Win32.DEVMODE dm = new Win32.DEVMODE();
int i = 0;
bool isCurrent;
while (Win32.EnumDisplaySettings(null, i, ref dm) != 0)
{
isCurrent = IsEqual(dm, dmCurrent);
list.Add(new DisplayData(dm, isCurrent));
i++;
}
return(list);
}
internal DisplayData(Win32.DEVMODE data, bool isCurrent)
{
_data = data;
_isCurrent = isCurrent;
}
