深入淺出MFC 書中源碼Frame1（C++11)

MFC.h

#include <iostream>class CObject { public:CObject() { std::cout << "CObject Constructor" << std::endl; }~CObject() { std::cout << "CObject Destructor" << std::endl; } };class CCmdTarget : public CObject { public:CCmdTarget() { std::cout << "CCmdTarget Constructor" << std::endl; }~CCmdTarget() { std::cout << "CCmdTarget Destructor" << std::endl; } };class CWinThread : public CCmdTarget { public:CWinThread() { std::cout << "CWinThread Constructor" << std::endl; }~CWinThread() { std::cout << "CWinThread Destructor" << std::endl; } };class CWinApp : public CWinThread { public:CWinApp* m_pCurrentWinApp;public:CWinApp() { m_pCurrentWinApp = this; std::cout << "CWinApp Constructor" << std::endl; }~CWinApp() { std::cout << "CWinApp Destructor" << std::endl; } };class CDocument : public CCmdTarget { public:CDocument() { std::cout << "CDocument Constructor" << std::endl; }~CDocument() { std::cout << "CDocument Destructor" << std::endl; } };class CWnd : public CCmdTarget { public:CWnd() { std::cout << "CWnd Constructor" << std::endl; }~CWnd() { std::cout << "CWnd Destructor" << std::endl; } };class CFrameWnd : public CWnd { public:CFrameWnd() { std::cout << "CFrameWnd Constructor" << std::endl; }~CFrameWnd() { std::cout << "CFrameWnd Destructor" << std::endl; } };class CView : public CWnd { public:CView() { std::cout << "CView Constructor" << std::endl; }~CView() { std::cout << "CView Destructor" << std::endl; } };// global functionCWinApp* AfxGetApp();

MFC.cpp

#include "Frame1.h"extern CMyWinApp theApp;CWinApp* AfxGetApp() {return theApp.m_pCurrentWinApp; }

Frame1.h

#include <iostream> #include "MFC.h"class CMyWinApp : public CWinApp { public:CMyWinApp() { std::cout << "CMyWinApp Constructor" << std::endl; }~CMyWinApp() { std::cout << "CMyWinApp Destructor" << std::endl; } };class CMyFrameWnd : public CFrameWnd { public:CMyFrameWnd() { std::cout << "CMyFrameWnd Constructor" << std::endl; }~CMyFrameWnd() { std::cout << "CMyFrameWnd Destructor" << std::endl; } };

Frame1.cpp

#include "Frame1.h"CMyWinApp theApp; // globasl object//---------------------------------------- // main //---------------------------------------- int main() {CWinApp* pApp = AfxGetApp();return 0; }

輸出結果

CObject Constructor
CCmdTarget Constructor
CWinThread Constructor
CWinApp Constructor
CMyWinApp Constructor
CMyWinApp Destructor
CWinApp Destructor
CWinThread Destructor
CCmdTarget Destructor
CObject Destructor

類圖

#mermaid-svg-6cJiI4agCMbLavQL {font-family:"trebuchet ms",verdana,arial,sans-serif;font-size:16px;fill:#333;}#mermaid-svg-6cJiI4agCMbLavQL .error-icon{fill:#552222;}#mermaid-svg-6cJiI4agCMbLavQL .error-text{fill:#552222;stroke:#552222;}#mermaid-svg-6cJiI4agCMbLavQL .edge-thickness-normal{stroke-width:2px;}#mermaid-svg-6cJiI4agCMbLavQL .edge-thickness-thick{stroke-width:3.5px;}#mermaid-svg-6cJiI4agCMbLavQL .edge-pattern-solid{stroke-dasharray:0;}#mermaid-svg-6cJiI4agCMbLavQL .edge-pattern-dashed{stroke-dasharray:3;}#mermaid-svg-6cJiI4agCMbLavQL .edge-pattern-dotted{stroke-dasharray:2;}#mermaid-svg-6cJiI4agCMbLavQL .marker{fill:#333333;stroke:#333333;}#mermaid-svg-6cJiI4agCMbLavQL .marker.cross{stroke:#333333;}#mermaid-svg-6cJiI4agCMbLavQL svg{font-family:"trebuchet ms",verdana,arial,sans-serif;font-size:16px;}#mermaid-svg-6cJiI4agCMbLavQL g.classGroup text{fill:#9370DB;fill:#131300;stroke:none;font-family:"trebuchet ms",verdana,arial,sans-serif;font-size:10px;}#mermaid-svg-6cJiI4agCMbLavQL g.classGroup text .title{font-weight:bolder;}#mermaid-svg-6cJiI4agCMbLavQL .nodeLabel,#mermaid-svg-6cJiI4agCMbLavQL .edgeLabel{color:#131300;}#mermaid-svg-6cJiI4agCMbLavQL .edgeLabel .label rect{fill:#ECECFF;}#mermaid-svg-6cJiI4agCMbLavQL .label text{fill:#131300;}#mermaid-svg-6cJiI4agCMbLavQL .edgeLabel .label span{background:#ECECFF;}#mermaid-svg-6cJiI4agCMbLavQL .classTitle{font-weight:bolder;}#mermaid-svg-6cJiI4agCMbLavQL .node rect,#mermaid-svg-6cJiI4agCMbLavQL .node circle,#mermaid-svg-6cJiI4agCMbLavQL .node ellipse,#mermaid-svg-6cJiI4agCMbLavQL .node polygon,#mermaid-svg-6cJiI4agCMbLavQL .node path{fill:#ECECFF;stroke:#9370DB;stroke-width:1px;}#mermaid-svg-6cJiI4agCMbLavQL .divider{stroke:#9370DB;stroke:1;}#mermaid-svg-6cJiI4agCMbLavQL g.clickable{cursor:pointer;}#mermaid-svg-6cJiI4agCMbLavQL g.classGroup rect{fill:#ECECFF;stroke:#9370DB;}#mermaid-svg-6cJiI4agCMbLavQL g.classGroup line{stroke:#9370DB;stroke-width:1;}#mermaid-svg-6cJiI4agCMbLavQL .classLabel .box{stroke:none;stroke-width:0;fill:#ECECFF;opacity:0.5;}#mermaid-svg-6cJiI4agCMbLavQL .classLabel .label{fill:#9370DB;font-size:10px;}#mermaid-svg-6cJiI4agCMbLavQL .relation{stroke:#333333;stroke-width:1;fill:none;}#mermaid-svg-6cJiI4agCMbLavQL .dashed-line{stroke-dasharray:3;}#mermaid-svg-6cJiI4agCMbLavQL #compositionStart,#mermaid-svg-6cJiI4agCMbLavQL .composition{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-6cJiI4agCMbLavQL #compositionEnd,#mermaid-svg-6cJiI4agCMbLavQL .composition{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-6cJiI4agCMbLavQL #dependencyStart,#mermaid-svg-6cJiI4agCMbLavQL .dependency{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-6cJiI4agCMbLavQL #dependencyStart,#mermaid-svg-6cJiI4agCMbLavQL .dependency{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-6cJiI4agCMbLavQL #extensionStart,#mermaid-svg-6cJiI4agCMbLavQL .extension{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-6cJiI4agCMbLavQL #extensionEnd,#mermaid-svg-6cJiI4agCMbLavQL .extension{fill:#333333!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-6cJiI4agCMbLavQL #aggregationStart,#mermaid-svg-6cJiI4agCMbLavQL .aggregation{fill:#ECECFF!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-6cJiI4agCMbLavQL #aggregationEnd,#mermaid-svg-6cJiI4agCMbLavQL .aggregation{fill:#ECECFF!important;stroke:#333333!important;stroke-width:1;}#mermaid-svg-6cJiI4agCMbLavQL .edgeTerminals{font-size:11px;}#mermaid-svg-6cJiI4agCMbLavQL :root{--mermaid-font-family:"trebuchet ms",verdana,arial,sans-serif;}CObjectCCmdTargetCWinThreadCDocumentCWndCWinAppCMyWinAppCFrameWndCViewCMyFrameWnd

主要結論

1·注意歷代父類構造函數和析構函數的調用順序。
2·全局對象的構建比程序進入點要早，亦即是說，輸出結果中所有構造函數輸出操作都是在main函數之前完成的。
3·main 函數調用全局函數 AfxGetApp() 取得 theApp 對象指針，也是仿真 MFC 程序的手法。

總結

以上是生活随笔為你收集整理的深入浅出MFC 书中源码Frame1（C++11)的全部內容，希望文章能夠幫你解決所遇到的問題。

如果覺得生活随笔網站內容還不錯，歡迎將生活随笔推薦給好友。