我可以组合2个不同的代表 [英] Can I Combine 2 Different Delegates
本文介绍了我可以组合2个不同的代表的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
class Foo
{
[DllImport("kernel32.dll", EntryPoint = "GetProcAddress")]
private static extern IntPtr GetProcAddress(IntPtr hModule, string procName);
public delegate void TestMethod(uint cap);
public static TestMethod Method;
static Foo()
{
Method = Func<TestMethod>("TestMethod");
}
public static T Func<T>(string name) where T : class
{
IntPtr _dll = IntPtr.Zero;// ptr to dll
IntPtr ptr = GetProcAddress(_dll, name);
Delegate a = Marshal.GetDelegateForFunctionPointer(ptr, typeof(T));
//Create delegate of type T but with different body of a => { Console.WriteLine("test"); };
Delegate b;
//Multicast delegate
return Delegate.Combine(a, b) as T;
}
}
然后
Foo.Method(); //执行方法并在控制台中写入
重点是包装T代理并为其添加功能。
可以这样做吗?
then
Foo.Method(); // executes the method and writes in console
The point is to wrap the T delegate and add functionality to it.
Can this be done ?
推荐答案
delegate void EnclosingDelegate(string parameter);
delegate string EnclosedDelegate();
class foo
{
void main() {
EnclosedDelegate enclosed = () => "foo";
EnclosingDelegate enclosing = (s) => s = enclosed();
}
}
这就是您要搜索的内容吗?
Is that what you are searching for?
这篇关于我可以组合2个不同的代表的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!
查看全文