当Visual Studio告诉我“ xcopy以代码4退出”时，出了什么问题？ [英] What is going wrong when Visual Studio tells me "xcopy exited with code 4"

问题描述

我对构建后事件不太熟悉，因此我对程序出了什么问题感到有些困惑。在Visual Studio 2010中进行编译时，我得到以下信息：

I'm not very familiar with post-build events, so I'm a little confused as to what's going wrong with my program. When compiling in visual studio 2010, I get the following:

The command "xcopy C:\Users\Me\Path\Foo.bar\Library\dsoframer.ocx C:\Users\Me\Path\Foo.bar\bin\Debug\ /Y /E /D
xcopy C:\Users\Me\Path\Foo.bar\ApplicationFiles C:\Users\Me\Path\Foo.bar\bin\Debug\ /Y /E /D
xcopy C:\Users\Me\Path\url\ C:\Users\Me\Path\Foo.bar\bin\Debug\ /Y /E /D
rmdir /S /Q C:\Users\Me\Path\Foo.bar\bin\Debug\.gwt-tmp" exited with code 4.    

尽管出现此错误，程序似乎仍可以正常运行，但我不想忽略这个问题，并且希望没有坏事发生。奇怪的是，此行仅以单个命令（第一个xcopy）开始，但是随着我继续编译项目（修复其他问题，主要是引用），错误消息越来越大。知道发生了什么事吗？

The program appears to run fine, despite this error, but I don't want to just ignore this issue and hope nothing bad happens. Strangely, this line started out as only a single command (the first xcopy) but as I continued to compile the project (fixing other problems, mostly references) the error message expanded larger and larger. Any idea what could be going on?

编辑：以下是似乎在构建后的事件-

Here are the postbuild events that seem to be failing --

xcopy $(ProjectDir)Library\dsoframer.ocx $(TargetDir) /Y /E /D
xcopy $(ProjectDir)ApplicationFiles $(TargetDir) /Y /E /D
xcopy $(SolutionDir)com.myUrl.gwt\www $(TargetDir) /Y /E /D
rmdir /S /Q $(TargetDir).gwt-tmp

推荐答案

Xcopy退出代码4表示 发生初始化错误。没有足够的内存或磁盘空间，或者您在命令行上输入了无效的驱动器名称或无效的语法。

Xcopy exit code 4 means "Initialization error occurred. There is not enough memory or disk space, or you entered an invalid drive name or invalid syntax on the command line."

看起来Visual Studio提供的无效xcopy的参数。通过 Project>检查构建后事件命令。右键单击>属性>建立事件>构建后事件。

It looks like Visual Studio is supplying invalid arguments to xcopy. Check your post-build event command via Project > Right Click > Properties > Build Events > Post Build Event.

请注意，如果 $（ProjectDir）或类似的宏展开时，术语在结果路径中有空格，然后将它们用双引号引起来。例如：

Note that if the $(ProjectDir) or similar macro terms have spaces in the resulting paths when expanded, then they will need to be wrapped in double quotes. For example:

xcopy "$(ProjectDir)Library\dsoframer.ocx" "$(TargetDir)" /Y /E /D1

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