Unity Bug 修复系列

DllNotFoundException:

参考 http://stackoverflow.com/questions/10003028/dllnotfoundexception-in-unity3d-plugin-for-c-dll

最近转Windows开发，同事c++生成的dll需要引用到opencv的dll，先用dependency walker 找到依赖的库，然后把所有dll直接扔到Plugins会报DllNotFoundException，初步怀疑是加载dll的顺序不同导致的。有几种解决方案：

1、http://stackoverflow.com/questions/10003028/dllnotfoundexception-in-unity3d-plugin-for-c-dll
根据上面网站的解决方法，在Editor时把依赖的dll放到安装目录Unity\Editor文件夹下，在Build后放到与.exe同目录下。

2、http://forum.unity3d.com/threads/dllnotfoundexception-when-depend-on-another-dll.31083/
直接手动添加全局变量

public class MyPluginClass
{
static MyPluginClass()
{
String currentPath = Environment.GetEnvironmentVariable("PATH", EnvironmentVariableTarget.Process);
String dllPath = Environment.CurrentDirectory + Path.DirectorySeparatorChar + "Assets" + Path.DirectorySeparatorChar + "Plugins";
if(currentPath.Contains(dllPath) == false)
{
Environment.SetEnvironmentVariable("PATH", currentPath + Path.PathSeparator + dllPath, EnvironmentVariableTarget.Process);
}
}
}