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Qt 编程 DLL和DLL的3中常见调用方法

上传者： niuxuexin | 上传时间： 2021-09-27 17:10:37 | 文件大小： 2.01MB | 文件类型： ZIP
DLL_CALL1: 调用dll里的全局函数，使用QLibrary，它封装了loadlibrary和getprocaddress，等 freelibrary 要求： 需要知道dll里函数的原型，来写函数指针。 dll放到一个指定的目录下不一定非exe旁边。 DLL_CALL2： 调用dll里类的成员函数，使用com的方法（也是QLibrary），gettestdll返回接口的指针。 要求： 包含dll的头文件这样（1、获得对象的函数指针2、接口的原型） dll放到一个指定的目录下不一定非exe旁边。 DLL_CALL2_3： 调用插件形式dll的方法，使用QPluginLoader。 要求：包含头文件，（插件的接口的原型需要知道，得到接口的指针调用函数）。 dll放到一个指定的目录下不一定非exe旁边。 DLL_CALL3： 静态连接的形式，在Qt的项目上右键-》添加库（内部库可能就是本工程内的，外部的就是外面 的？？）-》把lib选上ok。 要求： dll头文件，有了头文件后，可以直接使用dll中的类和dll中的全局函数。但是执行时dll得放到 exe旁边。 dll必须放到系统目录或exe旁边。

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评论信息

  • mjh1992423 :
    不完整，QT5我使用向导添加的
    2014-11-07
  • li1zhong :
    不完整，QT5我使用向导添加的
    2014-06-07
  • fungyun :
    我怎么全部都load失败啊，悲剧。
    2013-02-22
  • lglyjlylglyjly :
    非常有用，太感谢了。
    2012-12-21

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