DLL 傳遞消息EXE

 

// MyClass.h: interface for the CMyClass class.
//
//////////////////////////////////////////////////////////////////////

#if !defined(AFX_MYCLASS_H__EE9915A7_A14C_4FC5_94C7_E00704EA1D65__INCLUDED_)
#define AFX_MYCLASS_H__EE9915A7_A14C_4FC5_94C7_E00704EA1D65__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000

#ifdef MYDLL_EXPORTS
#define MYDLL_API __declspec(dllexport)
#else
#pragma message("auto to link the Test2.lib")
#define MYDLL_API __declspec(dllimport)
#endif



extern "C" MYDLL_API void StartSendMessage(HWND hwnd);



class MYDLL_API CMyClass  
{
public:
	 CString SayHello(CString strName);
	 CMyClass();
	 virtual ~CMyClass();

};

#endif // !defined(AFX_MYCLASS_H__EE9915A7_A14C_4FC5_94C7_E00704EA1D65__INCLUDED_)

 

// MyClass.cpp: implementation of the CMyClass class.
//
//////////////////////////////////////////////////////////////////////

#include "stdafx.h"
#define  MYDLL_EXPORTS
#include "Test2.h"
#include "MyClass.h"

#ifdef _DEBUG
#undef THIS_FILE
static char THIS_FILE[]=__FILE__;
#define new DEBUG_NEW
#endif

//////////////////////////////////////////////////////////////////////
// Construction/Destruction
//////////////////////////////////////////////////////////////////////


extern CTest2App theApp;

CMyClass::CMyClass()
{

}

CMyClass::~CMyClass()
{

}

CString CMyClass::SayHello(CString strName)
{
     return "Hello " + strName; 
}


void StartSendMessage(HWND hwnd)
{
	theApp.SendMessage(hwnd);
}

 

#define WM_MSG WM_USER + 102 

void CTest2App::SendMessage(HWND hwnd)
{
	::PostMessage(hwnd,WM_MSG,0,1);

}

 

 

應用程序：

   #define WM_MSG WM_USER + 102

  afx_msg void OnMyMsg(WPARAM wParam,LPARAM lParam);

   ON_MESSAGE(WM_MSG,OnMyMsg)

 

    void CTestDllDlg::OnButton2()
  {
               // TODO: Add your control notification handler code here
            HWND hwnd;
            hwnd = this->GetSafeHwnd();
         StartSendMessage(hwnd);
}