如何用C#更改win apps中的标题栏字体？

我发现这段代码但没有工作,也没有绘制标题栏：
我怎样才能做到这一点？
谢谢大家

protected override void WndProc(ref Message msg)
{
    base.WndProc(ref msg);
    const int WM_NCPAINT = 0x85;

    if (msg.Msg == WM_NCPAINT)
    {
        this.Text = "";// remove the original title text

        IntPtr hdc = GetWindowDC(msg.HWnd);
        Graphics g = Graphics.FromHdc(hdc);
        Font ft = new Font("Arial",16);

        g.DrawString("Hello World title",ft,Brushes.Red,new PointF(20.0f,0.0f));

        ReleaseDC(msg.HWnd,hdc);
    }
}

[DllImport("User32.dll")]
private static extern IntPtr GetWindowDC(IntPtr hWnd);

[DllImport("User32.dll")]
private static extern int ReleaseDC(IntPtr hWnd,IntPtr hDC);