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Код



using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using Microsoft.DirectX;
using Microsoft.DirectX.Direct3D;

namespace DirectX_n1
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button2_Click(object sender, EventArgs e)
        {

        }

        private void button1_Click(object sender, EventArgs e)
        {
            using(Form1 myForm1 = new Form1())
            {
                if(!myForm1.InitializeDirectX())
                {
                    MessageBox.Show("Pomulka inicializacii DirectX");
                    return;
                }
                myForm1.Show();
                while(myForm1.Created)
                {
                    myForm1.myRendering();
                    Application.DoEvents();
                }
            }
        }
        
        private void button3_Click(object sender, EventArgs e)
        {
            Close();
        }

        Device myDevice = null;
        public bool InitializeDirectX()
        {
            try
            {
                PresentParameters myPP = new PresentParameters();
                myPP.Windowed = true;
                myPP.SwapEffect = SwapEffect.Discard;
                myDevice = new Device(0, DeviceType.Hardware, this, CreateFlags.SoftwareVertexProcessing, myPP);
                return true;
            }
            catch(DirectXException)
            {
                return false;
            }
        }

        public void myRendering()
        {
            if (myDevice == null) return;
            myDevice.Clear(ClearFlags.Target, System.Drawing.Color.White, 1.0f, 0);
            myDevice.BeginScene();
            myDevice.EndScene();
            myDevice.Present();
        }
    }
}

Код



using System;
using System.Collections.Generic;
using System.Windows.Forms;

namespace DirectX_n1
{
    static class Program
    {
        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            /*Application.EnableVisualStyles();
            Application.SetCompatibleTextRenderingDefault(false);
            Application.Run(new Form1());*/
            using (Form1 myForm1 = new Form1())
            {
                if (!myForm1.InitializeDirectX())
                {
                    MessageBox.Show("Pomulka inicializacii DirectX");
                    return;
                }
                myForm1.Show();
                while (myForm1.Created)
                {
                    myForm1.myRendering();
                    Application.DoEvents();
                }
            }
        }
    }
}