如何使用MCI打开视频文件 [英] How to open video files using mci

问题描述

不知道如何打开视频文件，这是我的代码:

-用于导入dll:

Dont know how to open video files,this is my code:

-for importing dll:

[DllImport("winmm.dll")]
private static extern long mciSendString(
    string command,
    StringBuilder returnValue,
    int returnLength,
    IntPtr winHandle);

-用于附加视频文件:

-for oppening video file:

mciSendString("open \"" + fileName + "\" type mpegvideo alias mf style child parent " + this.VideoOutput, null, 0, IntPtr.Zero);

VideoOutput = PictureBox1.Handle.ToString()
如果我尝试构建新的应用程序，则代码有效，但在旧的应用程序中则无法工作(之前的代码有效)
请帮忙，我真的需要这个

VideoOutput = PictureBox1.Handle.ToString()
Code works if i try building a new application,but doesn''t work in my old app(code worked before)
Please help,I really need this

推荐答案

尝试检查以下链接:

http://social.msdn.microsoft.com /Forums/zh-CN/gametechnologiesaudioxact/thread/c6b79853-07c2-4382-9826-6932b958142b/ [ http://stackoverflow.com/questions/733324/help-with-mci-video-window [ ^ ]
Simple MCI Player [

try to check following links:

http://social.msdn.microsoft.com/Forums/en-US/gametechnologiesaudioxact/thread/c6b79853-07c2-4382-9826-6932b958142b/[^]
http://stackoverflow.com/questions/733324/help-with-mci-video-window[^]
Simple MCI Player[^]

regards
robert

我真的不认为您还不了解这一点，对吗?
发送到mci设备的命令字符串将评估为以下内容:

I really don''t think you quite understand this yet, do you?
Your command string sent to the mci device will evaluate to something along teh lines of:

open D:\Temp\myVideo.mp4 type mpegvideo alias mf style child parent System.Windows.Forms.PictureBox, SizeMode: Normal

，因为PictureBox.ToString生成

since PictureBox.ToString generates

System.Windows.Forms.PictureBox, SizeMode: Normal

而根据 MSDN [ ^ ]父级应该是窗口的句柄.您可以尝试使用this.VideoOutput.Handle，因为它可能会产生更好的结果，但是我还没有尝试过，也不知道它是否会工作.

Whereas according to MSDN[^] the parent should be a handle to a window. You could try using this.VideoOutput.Handle, as it might give a slightly better result, but I haven''t tried it, and don''t know if it will work.

我创建了一个新项目，因为我找不到遮阳篷，为什么我的旧项目停止工作，我使用相同的代码，现在可以正常工作了

I created a new project because i couldn''t find an awnser why did my old project stopped working,i use same code and it works fine now

这篇关于如何使用MCI打开视频文件的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！