如何使用MCI打开视频文件

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

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.

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