如何用Qt自动拷贝exe依赖的dll

QT生成的.exe文件不能运行的解决办法

之前的数独项目的GUI，当我的Qt项目生成exe时，由于缺少了相关的依赖dll文件，打开会一直报缺少依赖文件的错：

然后一开始我到安装的Qt文件夹里把这些有Qt生产的exe依赖的dll一个个拷贝了之后，还是会报缺依赖，后来发现有个qwindows.dll得放到新建的目录platforms下，反正甚是麻烦。而且我自认为加全依赖后，本地能跑，到别人机器又是各种报错，很烦恼。

实际上用QT自带的windeployqt.exe工具运行需要处理的exe即可，命令如下：

C:\Qt\Qt5.9.1\5.9.1\msvc2017_64\bin\windeployqt.exe myexe

这个windeployqt.exe在qt安装包的bin文件夹下，myexe为你vs生成的Qtexe，注意必须是Qt项目生成的exe.

示意图如下：

再看我们的文件夹，发现不再是孤零零的exe了，相关的依赖都弄过来了！大功告成，很方便！

通过这种方式可以很方便地找到我们的Qt项目依赖的包，而且会很全，如果手动一个个添加可能会出现还是缺漏、在本地能跑，但是在别人的机器又GG的情况，因此使用Qt自带的windeployqt生成exe来发布软件，想必是极吼的。

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