public VisualTheme(IWin32Window window, string classList, OpenThemeDataOptions opt = OpenThemeDataOptions.None)
{
var ptr = OpenThemeDataEx(new HandleRef(window, window?.Handle ?? IntPtr.Zero), classList, opt);
hTheme = new SafeThemeHandle(ptr);
if (hTheme.IsInvalid)
{
throw new Win32Exception();
}
}
public static extern IntPtr OpenThemeDataEx(IntPtr hWnd, string classList, OpenThemeDataOptions dwFlags);