vb.net 里面怎么调用 C写的dll呢

Question

vb.net 里面怎么调用 C写的dll呢

Answer 1

你好，你需要dllimport这个attribute来导入unmanaged 引用，就像我们调用系统API一样：

[DllImport("user32.dll", CharSet = CharSet.Auto)]
static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);

因为 SendMessage是在user32.dll这个文件里，所以上面要写这个文件。

还有就是你这个C的dll必须先注册。

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Mike Feng
MSDN Community Support | Feedback to us
Develop and promote your apps in Windows Store
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Answer 2

现在Ｃ函数有结构体参数，我是先在调用的地方定义了一个相对应的结构体，但是调用该函数时报错了。

Answer 3

这个是个代码问题，请给出你的测试代码。谢谢

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Mike Feng
MSDN Community Support | Feedback to us
Develop and promote your apps in Windows Store
Please remember to mark the replies as answers if they help and unmark them if they provide no help.