quartztypelib basics help

[Romil797]

I got this code from a website (I forgot the name) and edited it.
Here it is:

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;

using QuartzTypeLib;

namespace CsPlayer
{
    /// <summary>
    /// Summary description for Form1.
    /// </summary>
    public class Form1 : System.Windows.Forms.Form
    {
        private System.Windows.Forms.Button button1;
        public FilgraphManagerClass graphClass;
        public IVideoWindow graphClassV;
        private Panel panel1;
        private Button button2;
        /// <summary>
        /// Required designer variable.
        /// </summary>
        private System.ComponentModel.Container components = null;

        public Form1()
        {
            //
            // Required for Windows Form Designer support
            //
            InitializeComponent();

            //
            // TODO: Add any constructor code after InitializeComponent call
            //
        }

        /// <summary>
        /// Clean up any resources being used.
        /// </summary>
        protected override void Dispose(bool disposing)
        {
            if (disposing)
            {
                if (components != null)
                {
                    components.Dispose();
                }
            }
            base.Dispose(disposing);
        }

        #region Windows Form Designer generated code
        /// <summary>
        /// Required method for Designer support - do not modify
        /// the contents of this method with the code editor.
        /// </summary>
        private void InitializeComponent()
        {
            this.button1 = new System.Windows.Forms.Button();
            this.panel1 = new System.Windows.Forms.Panel();
            this.button2 = new System.Windows.Forms.Button();
            this.SuspendLayout();
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(16, 16);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(88, 32);
            this.button1.TabIndex = 0;
            this.button1.Text = "Play";
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // panel1
            // 
            this.panel1.Location = new System.Drawing.Point(26, 57);
            this.panel1.Name = "panel1";
            this.panel1.Size = new System.Drawing.Size(240, 241);
            this.panel1.TabIndex = 1;
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(109, 20);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(58, 27);
            this.button2.TabIndex = 2;
            this.button2.Text = "button2";
            this.button2.UseVisualStyleBackColor = true;
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // Form1
            // 
            this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
            this.ClientSize = new System.Drawing.Size(311, 319);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.panel1);
            this.Controls.Add(this.button1);
            this.Name = "Form1";
            this.Text = "Form1";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.ResumeLayout(false);

        }
        #endregion

        /// <summary>
        /// The main entry point for the application.
        /// </summary>
        [STAThread]
        static void Main()
        {
            Application.Run(new Form1());
        }

        private void button1_Click(object sender, System.EventArgs e)
        {

            OpenFileDialog ofd = new OpenFileDialog();
            if (ofd.ShowDialog() == DialogResult.OK)
            {

                //FilgraphManagerClass graphClass = null;
                try
                {
                    graphClass = new FilgraphManagerClass();

                    graphClass.RenderFile(ofd.FileName);
                    graphClassV = graphClass as IVideoWindow;
                    graphClassV.Owner = (int)panel1.Handle;
                    
                    graphClassV.SetWindowPosition(panel1.ClientRectangle.Left, panel1.ClientRectangle.Top, panel1.ClientRectangle.Width, panel1.ClientRectangle.Height);
                    graphClassV.WindowState = (int) FixedPanel.Panel1 | (int) FixedPanel.Panel2;
                    graphClass.Run();

                    //int evCode;
                    //graphClass.WaitForCompletion(-1, out evCode);
                }
                catch (Exception) { }
                finally
                {
                    graphClass = null;
                }
            }

        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void button2_Click(object sender, EventArgs e)
        {
            
        }
    }
}

However, I want to make it so when you click button2, you pause the video. How? Thank you.

[Diamonddrake]

You didn't include the code for the FilgraphManagerClass so that makes it hard to determine a solution.

But since you are just playing the video and not trying to do anything else with it I would consider using managed directx audiovideoplayback library. It has a video object that is very simple to use with play(), pause(), rewind(), length, currentposition, and other helpful methods and properties. this uses Direct X to wrap direct show(that builds a filter graph similar to quartz.dll) where it appears that the filtergraphmanager class does a similar thing.