[置顶] WinForms and Xna ,使用外部Form的完美解决方案

继承 Microsoft.Xna.Framework.Game,  

graphics设置参数时,更改为传入的句柄

通过this.Window.Handle获取内置FORM对象，将其设置TOP，确定不出现在显示器中，即可。

内置FORM的VisibleChanged事件订阅：当显示内置FORM时，将其设置设置成不可见！！！

public class WinGame : Microsoft.Xna.Framework.Game
    {
        GraphicsDeviceManager graphics;
        public WinGame()
        {
            graphics = new GraphicsDeviceManager(this);
            drawHandle = IntPtr.Zero;
        }

        IntPtr drawHandle;
        Form form;
        public WinGame(Form form)
            : this(form,form.Handle)
        {
        }

        public WinGame(Form form, IntPtr drawHandle)
            : this()
        {
            this.form = form;
            this.drawHandle = drawHandle;
            graphics.PreparingDeviceSettings += (s, e) =>
            {
                if (drawHandle == IntPtr.Zero) return;
                e.GraphicsDeviceInformation.PresentationParameters.DeviceWindowHandle = this.drawHandle;
                Mouse.WindowHandle = this.DeviceDrawControl.FindForm().Handle; //mouse状态支持
            };
            if (drawHandle == IntPtr.Zero) return;
            Form gameWindowForm = Control.FromHandle(this.Window.Handle) as Form;
            gameWindowForm.FormBorderStyle = FormBorderStyle.None;
            gameWindowForm.Top = -2000 + gameWindowForm.Height * -1;
            gameWindowForm.VisibleChanged += (s, e) =>
            {
                if (!gameWindowForm.Visible) return;
                gameWindowForm.Visible = !gameWindowForm.Visible;
            };
        }


        protected override void BeginRun()
        {
            if (this.form != null)
            {
                this.form.FormClosing += (s, e) =>
                {
                    base.Exit();
                };
            }
            base.BeginRun();
        }

        public void SetBackColor(Color color)
        {
            if (this.drawHandle == IntPtr.Zero) return;
            var control = Control.FromHandle(this.drawHandle);
            control.BackColor = System.Drawing.Color.FromArgb(color.R, color.G, color.B);
        }
    }

XNA项目中，所有继承自Microsoft.Xna.Framework.Game，全部改成 从WinGame继承！

修改入口函数

static void Main(string[] args)
        {
            //using (Game1 game = new Game1())
            //{
            //    game.Run();
            //}

            using (Form1 form = new Form1())
            {
                using (Game1 game = new Game1(form, form.GetPtr()))
                {                    
                    form.Show();
                    game.Run();
                }
            }
            System.Windows.Forms.Application.Exit();
        }

form.GetPtr()方法，可以返回form自己的句柄，也可以是子控件的句柄！

这样不需要使用老外的那个事例中实现的XNA控件，又可以使用GAME的对象进行开发，方便！