即时加载插件（DLL） [英] Loading Plugins (DLLs) on-the-fly

问题描述

是否有一种方法可以在D中动态地从DLL动态加载和调用函数？我希望我的程序能够在启动时也可能在运行时加载插件。

Is there a way to dynamically load and call functions from DLLs dynamically in D? I'd like my program to be able to load plugins at startup and perhaps on-the-fly as well.

推荐答案

它取决于您想要获得的动态。如果要动态加载dll并运行一些预定义的函数，那么Wei Li提供了一个非常好的包装器此处。借助模板的强大功能，它使您可以执行以下操作：

It depends on how dynamic you want to get. If you want to dynamically load a dll and run some predefined functions, there is a very nice wrapper by Wei Li here. Thanks to the power of templates, it allows you to do things like these:

// define functions
alias Symbol!("MessageBoxW", int function(HWND, LPCWSTR, LPCWSTR, UINT)) mbw;
alias Symbol!("MessageBoxA", int function(HWND, LPCSTR, LPCSTR, UINT)) mba;
// load dll
auto dll = new Module!("User32.dll", mbw, mba);
// call functions
dll.MessageBoxW(null, "Hello! DLL! ", "Hello from MessageBoxW", MB_OK);
dll.MessageBoxA(null, "Hello! DLL! ", "Hello from MessageBoxA", MB_OK);

代码为D1。对于D2，您必须将 char [] 替换为 string ，使用 toStringz（）并可能删除 scope 。 编辑： 我的D2端口此代码可能对发现此问题的其他人有用。

The code is D1. For D2, you have to replace char[] with string, use toStringz() and possibly remove scope. my D2 port of this code might be useful to others finding this question.

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