using?System;
using?System.Collections.Generic;
using?System.ComponentModel;
using?System.Data;
using?System.Drawing;
using?System.Linq;
using?System.Text;
using?System.Windows.Forms;
using?QuartzTypeLib;
using?System.IO;

namespace?DSPlayer
{
????public?partial?class?Form1?:?Form
????{
????????///?

????????///?必須的設(shè)計器變量
????????///?

????????String?fPath;
????????String?fName;
????????static?int?WM_APP?=?0x8000;???????????????????//自定義消息起始于WM_APP
????????static?int?WM_GRAPHNOTIFY?=?WM_APP?+?1;???????//私有消息
????????static?int?EC_COMPLETE?=?0x01;????????????????//媒體播放完畢消息
????????static?int?WS_CHILD?=?0x40000000;?????????????//創(chuàng)建一個子窗口。帶有此風(fēng)格的窗口不能帶有菜單欄

????????static?int?WS_CLIPCHILDREN?=?0x2000000;
????????static?FilgraphManager?m_objFilterGraph?=?null;
????????static?IBasicAudio?m_objBasicAudio?=?null;
????????static?IVideoWindow?m_objVideoWindow?=?null;
????????static?IMediaEvent?m_objMediaEvent?=?null;
????????static?IMediaEventEx?m_objMediaEventEx?=?null;
????????static?IMediaPosition?m_objMediaPosition?=?null;
????????static?IMediaControl?m_objMediaControl?=?null;
????????static?IBasicVideo?m_objBasicVideo?=?null;
????????

????????enum?MediaStatus{
????????????NoneStoppedPausedRunning
????????};
????????static?MediaStatus?m_CurrentStatus?=?MediaStatus.None;

????????public?Form1（）
????????{
????????????InitializeComponent（）;
????????}

????????private?void?cleanUp（）?{
????????????if?（m_objMediaControl?!=?null）
????????????????m_objMediaControl.Stop（）;
????????????m_CurrentStatus?=?MediaStatus.Stopped;
????????????if?（m_objMediaEventEx?!=?null）
????????????????m_objMediaEventEx.SetNotifyWindow（0?0?0）;
????????????if?（m_objVideoWindow?!=?null）
????????????{
????????????????m_objVideoWindow.Visible?=?0;
????????????????m_objVideoWindow.Owner?=?0;
????????????}
????????????if?（m_objBasicAudio?!=?null）
????????????????m_objBasicAudio?=?null;
????????????if?（m_objFilterGraph?!=?null）
????????????????m_objFilterGraph?=?null;
????????????if?（m_objMediaControl?!=?null）
????????????????m_objMediaControl?=?null;
????????????if?（m_objMediaEvent?!=?null）
????????????????m_objMediaEvent?=?null;
????????????if?（m_objMediaEventEx?!=?null）
????????????????m_objMediaEventEx?=?null;
????????????if?（m_objMediaPosition?!=?null）
????????????????m_objMediaPosition?=?null;
????????????if?（m_objVideoWindow?!=?null）
????????????????m_objVideoWindow?=?null;
????????}

????????private?void?打開文件ToolStripMenuItem_Click（object?sender?EventArgs?e）
????????{
????????????OpenFileDialog?openFileDialog?=?new?OpenFileDialog（）;
????????????openFileDialog.Filter?=?“Medie?Files|*.mpg;*.avi;*.flv;*.wma;*.mov;*.rmvb;*.asf;*.wav;*.mp2;*.mp3|All?Files|*.*“;
????????????if?（System.Windows.Forms.DialogResult.OK?==?openFileDialog.ShowDialog（））?{
????????????????listBox1.Items.Add（openFileDialog.SafeFileName）;
????????????????playMedia（openFileDialog.FileName）;
????????????}
????????}