从非托管函数触发事件 [英] Firing events from a unmanaged function

问题描述

我正在尝试使用指向托管对象的指针从非托管函数中触发事件

我收到以下错误.
错误C3767:``ShashiTest :: test :: OnShowResult :: raise'':候选函数无法访问
我怎么能正常调用ShowMessage函数.

I am trying to fire an event from a unmanaged function using a pointer to managed object

I get the following error.
error C3767: ''ShashiTest::test::OnShowResult::raise'': candidate function(s) not accessible
How ever I can call regular function ShowMessage without any issue.

#pragma once
	#using<mscorlib.dll>
	#using<system.windows.forms.dll> 

	using namespace System;
	using namespace System::ComponentModel;
	using namespace System::Collections;
	using namespace System::Diagnostics;
	using namespace System::Windows::Forms;

	namespace ShashiTest {

		public delegate void ShowResult(System::String^);
		public ref class test
		{
			
		public:
			event ShowResult^ OnShowResult;
			test(void)
			{		
				
			};
			void ShowMessage()
			{
				MessageBox::Show("Hello World");
			}
			

		};
		class ManagedInterface
		{
		public:
			gcroot<test^> m_test;
			ManagedInterface(){};
			~ManagedInterface(){};	

			void ResultWindowUpdate(std::string ResultString);

		};
	}
	void ShashiTest::ManagedInterface::ResultWindowUpdate(std::string ResultString)
	{
		if(m_test)
		{
			System::String ^result = gcnew system::String(ResultString.c_str());
			m_test->OnShowResult(result);
		}
	}</system.windows.forms.dll></mscorlib.dll>

推荐答案

请参见

see Compiler Error C3767[^] it tells you not only why you get the error but also how to resolve it.

如何:覆盖添加，删除和引发方法的默认访问权限 [^ ]

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