原本是DX里的一个例子，我觉得还可以，就COPY出来，想改改看。结果让我大失所望。
最简单要求，就是对音频文件和视频文件可以定位查找，本来它的Video和Audio类都提供了Seek方法，但它们根本不能工作，每次Seek后，都回到0的位置上。后来用Reflector来看它的源代码，结果也是不尽人意，很多底层的代码没有办法反射出来。特别是DX里的一些接口，根本无法查看。最后也只好先暂停了。
本来还想着，要是DX在.Net下封装的比较好的话，我就可以少用C＋＋的COM组件了，直接用C＃来写组件也方便多了。没想到MS的托管DX确实还不够完善，我看可能要等以后的版本了。不过它的MediaPlay的SDK还是不错的，有机会也看看。
using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using Microsoft.DirectX;
using Microsoft.DirectX.AudioVideoPlayback;
namespace Webb.DirectX.Debug2
{
/**//// <summary>
/// Summary description for Form1.
/// </summary>
public class AVPlayer : System.Windows.Forms.Form
{
private string filterText = "Video Files (*.avi; *.qt; *.mov; *.mpg; *.mpeg; *.m1v; *.wmv)|*.avi; *.qt; *.mov; *.mpg; *.mpeg; *.m1v; *.wmv|" +
"Audio files (*.wav; *.mpa; *.mp2; *.mp3; *.au; *.aif; *.aiff; *.snd; *.wma)|*.wav; *.mpa; *.mp2; *.mp3; *.au; *.aif; *.aiff; *.snd; *.wma|" +
"MIDI Files (*.mid, *.midi, *.rmi)|*.mid; *.midi; *.rmi|" +
"Image Files (*.jpg, *.bmp, *.gif, *.tga)|*.jpg; *.bmp; *.gif; *.tga|" +
"All Files (*.*)|*.*";
private Video ourVideo = null;
private Audio ourAudio = null;
Winforms variables#region Winforms variables
/**//// <summary>
/// Required designer variable.
/// </summary>
private System.ComponentModel.Container components = null;
private System.Windows.Forms.MainMenu mnuMain;
private System.Windows.Forms.OpenFileDialog ofdOpen;
private System.Windows.Forms.MenuItem menuItem3;
private System.Windows.Forms.MenuItem mnuFile;
private System.Windows.Forms.MenuItem mnuOpen;
private System.Windows.Forms.MenuItem menuItem1;
private System.Windows.Forms.MenuItem mnuPlay;
private System.Windows.Forms.MenuItem mnuStop;
private System.Windows.Forms.MenuItem mnuPause;
private System.Windows.Forms.MenuItem menuItem2;
private System.Windows.Forms.MenuItem mnuFull;
private System.Windows.Forms.ToolBar toolBar1;
private System.Windows.Forms.ToolBarButton toolBarButton1;
private System.Windows.Forms.ToolBarButton toolBarButton2;
private System.Windows.Forms.ToolBarButton toolBarButton3;
private System.Windows.Forms.ToolBarButton toolBarButton4;
private System.Windows.Forms.ToolBarButton toolBarButton5;
private System.Windows.Forms.MenuItem mnuExit;
#endregion
public AVPlayer()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
OpenFile();
}
private bool _IsVideo = false;
/**//// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
CleanupObjects();
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
Windows Form Designer generated code#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.mnuMain = new System.Windows.Forms.MainMenu();
this.mnuFile = new System.Windows.Forms.MenuItem();
this.mnuOpen = new System.Windows.Forms.MenuItem();
this.menuItem3 = new System.Windows.Forms.MenuItem();
this.mnuExit = new System.Windows.Forms.MenuItem();
this.menuItem1 = new System.Windows.Forms.MenuItem();
this.mnuPlay = new System.Windows.Forms.MenuItem();
this.mnuStop = new System.Windows.Forms.MenuItem();
this.mnuPause = new System.Windows.Forms.MenuItem();
this.menuItem2 = new System.Windows.Forms.MenuItem();
this.mnuFull = new System.Windows.Forms.MenuItem();
this.ofdOpen = new System.Windows.Forms.OpenFileDialog();
this.toolBar1 = new System.Windows.Forms.ToolBar();
this.toolBarButton1 = new System.Windows.Forms.ToolBarButton();
this.toolBarButton2 = new System.Windows.Forms.ToolBarButton();
this.toolBarButton3 = new System.Windows.Forms.ToolBarButton();
this.toolBarButton4 = new System.Windows.Forms.ToolBarButton();
this.toolBarButton5 = new System.Windows.Forms.ToolBarButton();
this.SuspendLayout();
//
// mnuMain
//
this.mnuMain.MenuItems.AddRange(new System.Windows.Forms.MenuItem[] {
this.mnuFile,
&nb
