bool VisualStylesEnabled()
{
OperatingSystem os = Environment.OSVersion;
bool isAppropriateOS = os.Platform == PlatformID.Win32NT && ((os.Version.Major == 5 && os.Version.Minor >= 1) || os.Version.Major > 5);
bool osFeatureThemesPresent = false;
bool osThemeDLLAvailable = false;
if (isAppropriateOS)
{
Version osThemeVersion = OSFeature.Feature.GetVersionPresent(OSFeature.Themes);
osFeatureThemesPresent = osThemeVersion != null;
NativeMethods.DLLVersionInfo dllVersion = new NativeMethods.DLLVersionInfo();
dllVersion.cbSize = Marshal.SizeOf(typeof(NativeMethods.DLLVersionInfo));
int temp = NativeMethods.DllGetVersion(ref dllVersion);
osThemeDLLAvailable = dllVersion.dwMajorVersion >= 6;
}
return isAppropriateOS && osFeatureThemesPresent && osThemeDLLAvailable && NativeMethods.IsAppThemed() && NativeMethods.IsThemeActive();
}
/// <summary>
/// Returns true, when visual styles are enabled in this application.
/// </summary>
bool VisualStylesEnabled()
{
// Check if RenderWithVisualStyles property is available in the Application class (New feature in NET 2.0)
Type t = typeof(Application);
System.Reflection.PropertyInfo pi = t.GetProperty("RenderWithVisualStyles");
if(pi == null)
{
// NET 1.1
OperatingSystem os = System.Environment.OSVersion;
if(os.Platform == PlatformID.Win32NT && (((os.Version.Major == 5) && (os.Version.Minor >= 1)) || (os.Version.Major > 5)) )
{
NativeMethods.DLLVersionInfo version = new NativeMethods.DLLVersionInfo();
version.cbSize = Marshal.SizeOf(typeof(NativeMethods.DLLVersionInfo));
if(NativeMethods.DllGetVersion(ref version) == 0)
{
return (version.dwMajorVersion > 5) && NativeMethods.IsThemeActive() && NativeMethods.IsAppThemed();
}
}
return false;
}
else
{
// NET 2.0
bool result = (bool)pi.GetValue(null, null);
return result;
}
}
