public static void ChangeDisplayMode(int width, int heigth)
{
DisplayMode?target = null;
foreach (DisplayMode mode in ScreenHelper.GetSupportedDisplayModes())
{
if (mode.dmPelsWidth == width && mode.dmPelsHeight == heigth)
{
if (target == null)
{
target = mode;
}
else
{
if (mode.dmDisplayFrequency > target.Value.dmDisplayFrequency || mode.dmBitsPerPel > target.Value.dmBitsPerPel)
{
target = mode;
}
}
}
}
if (target == null)
{
throw new Exception("ScreenResolution settings Not Supported");
}
ScreenHelper.ChangeDisplayMode(target.Value);
}
/// <summary>
/// ChangeDisplayMode 更改系统的显示设置。
/// </summary>
public static void ChangeDisplayMode(ScreenResolution screenResolution)
{
if (screenResolution.BitsPerPixels == 0 || screenResolution.DisplayFrequency == 0)
{
ScreenHelper.ChangeDisplayMode(screenResolution.Width, screenResolution.Height);
return;
}
bool found = false;
foreach (DisplayMode mode in ScreenHelper.GetSupportedDisplayModes())
{
if (mode.dmPelsWidth == screenResolution.Width && mode.dmPelsHeight == screenResolution.Height &&
mode.dmDisplayFrequency == screenResolution.DisplayFrequency && mode.dmBitsPerPel == screenResolution.BitsPerPixels)
{
found = true;
ScreenHelper.ChangeDisplayMode(mode);
break;
}
}
if (!found)
{
throw new Exception("ScreenResolution settings Not Supported");
}
}
/// <summary>
/// GetSupportedDisplayModes 获取系统支持的屏幕分辨率。
/// </summary>
public static List <ScreenResolution> GetSupportedScreenResolutions()
{
Dictionary <string, DisplayMode> dic = new Dictionary <string, DisplayMode>();
foreach (DisplayMode mode in ScreenHelper.GetSupportedDisplayModes())
{
if (mode.dmPelsWidth >= mode.dmPelsHeight)
{
string token = string.Format("{0}*{1}", mode.dmPelsWidth, mode.dmPelsHeight);
if (!dic.ContainsKey(token))
{
dic.Add(token, mode);
}
else
{
if (mode.dmBitsPerPel > dic[token].dmBitsPerPel)
{
dic[token] = mode;
}
else if (mode.dmBitsPerPel == dic[token].dmBitsPerPel)
{
if (mode.dmDisplayFrequency > dic[token].dmDisplayFrequency)
{
dic[token] = mode;
}
}
}
}
}
List <ScreenResolution> list = new List <ScreenResolution>();
foreach (DisplayMode mode in dic.Values)
{
list.Add(mode.GetScreenResolution());
}
return(list);
}