public void SetParameters(string className, int part, int state)
{
if (theme != IntPtr.Zero)
{
last_hresult = VisualStyles.UxThemeCloseThemeData(theme);
}
if (!IsSupported)
{
throw new InvalidOperationException("Visual Styles are not enabled.");
}
this.class_name = className;
this.part = part;
this.state = state;
theme = VisualStyles.UxThemeOpenThemeData(IntPtr.Zero, this.class_name);
if (IsElementKnownToBeSupported(className, part, state))
{
return;
}
if (theme == IntPtr.Zero || !VisualStyles.UxThemeIsThemePartDefined(theme, this.part))
{
throw new ArgumentException("This element is not supported by the current visual style.");
}
}
public static bool IsElementDefined(VisualStyleElement element)
{
if (!IsSupported)
{
throw new InvalidOperationException("Visual Styles are not enabled.");
}
if (IsElementKnownToBeSupported(element.ClassName, element.Part, element.State))
{
return(true);
}
IntPtr theme = VisualStyles.UxThemeOpenThemeData(IntPtr.Zero, element.ClassName);
if (theme == IntPtr.Zero)
{
return(false);
}
bool retval = VisualStyles.UxThemeIsThemePartDefined(theme, element.Part);
VisualStyles.UxThemeCloseThemeData(theme);
return(retval);
}