模块的编写及其调用

定义接口文件：

//接口文件：#pragma once#ifdef  IeWeatherPlug__Exports#defineWeather_Api __declspec(dllexport) #else#define Weather_Api __declspec(dllimport)#endifclass IeWeatherPlug{public:virtual BOOL CreateWeatherWnd(HWND hMainWnd) = 0;virtual void DestroyWeatherWnd() = 0;virtual void ShowWeatherWnd()=0;virtual void HideWeatherWnd()=0;virtual void NetWorkIsConected()=0;virtual void SetCallBack(void * pFun)=0 ;virtual HWND GetWeatherWnd()=0;};extern  "C" Weather_Api IeWeatherPlug* GetWeatherPlug();

模块的stdafx文件：

// stdafx.htypedef BOOL (*Fun_CallBack)(CString); extern Fun_CallBack g_CallBackFun;//stdafx.cpp Fun_CallBack g_CallBackFun=NULL;

// 接下来的文件就可以这样调用：

 (*g_CallBackFun)(strPic);

定义实现类：

#pragma once
#include "ieweatherplug.h"
#include "DlgWeather.h"

class CWeatherPlug :public IeWeatherPlug{public:CWeatherPlug(void);virtual ~CWeatherPlug(void);virtual BOOL CreateWeatherWnd(HWND hMainWnd);virtual void DestroyWeatherWnd();virtual void ShowWeatherWnd();virtual void HideWeatherWnd();virtual void NetWorkIsConected();virtual void SetCallBack(void * pFun);virtual HWND GetWeatherWnd();CDlgWeather*m_pWeather;};

实现类的cpp文件：

extern  "C" Weather_Api IeWeatherPlug* GetWeatherPlug(){static CWeatherPlug Weather;return&Weather;}CWeatherPlug::CWeatherPlug(void){}CWeatherPlug::~CWeatherPlug(void){}BOOL CWeatherPlug::CreateWeatherWnd(HWND hMainWnd){AFX_MANAGE_STATE(AfxGetStaticModuleState());if( m_pWeather == NULL ){m_pWeather = new CDlgWeather();m_pWeather->SetMainHwnd(hMainWnd);if( m_pWeather->Create( CDlgWeather::IDD, CWnd::FromHandle( GetDesktopWindow() ) ) ){return TRUE;}else return FALSE;}return TRUE ;}void CWeatherPlug::ShowWeatherWnd(){AFX_MANAGE_STATE(AfxGetStaticModuleState());if (m_pWeather!=NULL){if (IsWindow(m_pWeather->GetSafeHwnd())){m_pWeather->ShoweWeatherWnd();}}}void CWeatherPlug::DestroyWeatherWnd(){AFX_MANAGE_STATE(AfxGetStaticModuleState());if( m_pWeather != NULL ){if( ::IsWindow( m_pWeather->GetSafeHwnd() ) ){m_pWeather->ShowWindow( SW_HIDE );m_pWeather->DestroyWindow();}deletem_pWeather;m_pWeather = NULL;}}void CWeatherPlug::SetCallBack( void * pFun ){Fun_CallBack CallBack = (Fun_CallBack)pFun ; g_CallBackFun = CallBack ;}HWND CWeatherPlug::GetWeatherWnd(){return m_pWeather->GetSafeHwnd() ;}

另一处调用这个模块：

// weatherStaticWnd.h#ifdef  WXH_NEW_WEATHER #include "..\\..\\include\\IeWeatherPlug.h"#pragma comment(lib,"..\\..\\eWeatherExPlug\\Release\\eWeatherExPlug.lib") #endifclass CWeatherStaticWnd :public CStatic ,public IZxRenderUpdate { public:CWeatherStaticWnd(void);~CWeatherStaticWnd(void);DECLARE_MESSAGE_MAP()public:afx_msg void OnPaint();afx_msg BOOL OnEraseBkgnd(CDC* pDC);protected:virtual void PreSubclassWindow();};

实现文件：

// cpp文件：HWND  g_Weather_hwnd=NULL ;CString g_sWeathImgPath;BOOL RenderWeatherCallBack( CString sWeathImgPath ){g_sWeathImgPath=sWeathImgPath ;::PostMessage(g_Weather_hwnd,WM_UPDATE_WEATHER,0,0);return TRUE ;}void CWeatherStaticWnd::PreSubclassWindow(){// TODO: 在此添加专用代码和/或调用基类g_Weather_hwnd=m_hWnd ;#ifdef WXH_NEW_WEATHERGetWeatherPlug()->CreateWeatherWnd(AfxGetMainWnd()->GetSafeHwnd());GetWeatherPlug()->SetCallBack(RenderWeatherCallBack);#endif __super::PreSubclassWindow();}