/// <summary>
/// 获取系统支持的分辨率
/// </summary>
public static Size[] GetSystemResolutions()
{
List <Size> list = new List <Size>();
var devmode = new User32.DEVMODE();
devmode.dmDeviceName = new string(new char[32]);
devmode.dmFormName = new string(new char[32]);
devmode.dmSize = (short)Marshal.SizeOf(devmode);
int i = 0, displayWidth = 0;
while (User32.EnumDisplaySettings(null, i, ref devmode) == 1)
{
if (devmode.dmPelsWidth >= 800 && displayWidth != devmode.dmPelsWidth)
{
displayWidth = devmode.dmPelsWidth;
list.Add(new Size {
Width = (short)devmode.dmPelsWidth, Height = (short)devmode.dmPelsHeight
});
}
i++;
}
list.Reverse();
return(list.ToArray());
}
internal DisplaySettingsInfo(User32.DEVMODE devMode)
{
// Do not log here, it will result in too much stuff (GetSupported create all supported display
// settings : can be in thousand, often in hundreds)
if (devMode.dmSize == 0)
{
throw new ArgumentNullException("devMode", "Must be a valid instance of the struct (uninitialized struct passed in)");
}
_devMode = devMode;
}
public static IReadOnlyList <ResolutionEntry> GetResolutions()
{
if (InitializeAcVideoModes())
{
try {
return(AcVideoModes.GetResolutionEntries().ToList());
} catch (Exception e) {
NonfatalError.Notify(ToolsStrings.AcSettings_CannotGetResolutions, e);
}
}
var d = new User32.DEVMODE();
return(LinqExtension.RangeFrom()
.Select(i => User32.EnumDisplaySettings(null, i, ref d)
? new ResolutionEntry(i + 1, d.dmPelsWidth, d.dmPelsHeight, d.dmDisplayFrequency) : null)
.TakeWhile(x => x != null).Distinct().ToList());
}
private DisplaySettingsInfo[] SupportedConfiguration()
{
if (_supported == null)
{
List <DisplaySettingsInfo> retVal = new List <DisplaySettingsInfo>();
bool success = true;
uint index = 0;
while (success)
{
User32.DEVMODE devMode = new User32.DEVMODE();
devMode.dmSize = (short)Marshal.SizeOf(devMode);
success = User32.EnumDisplaySettings(_deviceName, index++, ref devMode);
if (success)
{
retVal.Add(new DisplaySettingsInfo(devMode));
}
}
_supported = retVal.ToArray();
}
return(_supported);
}
public static int CurrentRefreshRate()
{
var vDevMode = new User32.DEVMODE();
return(User32.EnumDisplaySettings(null, User32.ENUM_CURRENT_SETTINGS, ref vDevMode) ? vDevMode.dmDisplayFrequency : 60);
}