读书时间 2011/11/16 读书时间-优快云博客

本文链接：https://blog.youkuaiyun.com/printf1998/article/details/6975508

本文深入探讨了C++与ATL/WTL框架的整合应用，详细解析了ATL中无法使用CWnd的问题及赋值与初始化的区别。通过分析WTL例子My2ndWTL70Win，展示了如何在不同环境下进行窗口生成与消息循环操作，包括环境初始化、窗口创建、显示以及消息循环流程。重点介绍了CAppModule实例的作用和必要性，以及整个过程的步骤和关键代码解释。

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1.《把脉VC++》

Chap 3

* MFC与ATL

ATL中无法使用CWnd

Chap 4

* 赋值与初始化的区别：前者调用operator=()，后者调用constructor

2. 以前关于WTL的笔记

http://blog.youkuaiyun.com/printf1998/article/details/6401743

http://blog.youkuaiyun.com/printf1998/article/details/6403104

3. WTL例子分析：My2ndWTL70Win

* My2ndWTL70Win.cpp

// HelloWTL70Win2.cpp : main source file for HelloWTL70Win2.exe
//

#include "stdafx.h"

//#include <atlapp.h>

#include <atlframe.h>
#include <atlctrls.h>
#include <atldlgs.h>
#include <atlctrlw.h>

#include "resource.h"

#include "MyMainWnd.h"

//#include "aboutdlg.h"
//#include "maindlg.h"

CAppModule _Module;

int Run(LPTSTR /*lpstrCmdLine*/ = NULL, int nCmdShow = SW_SHOWDEFAULT)
{
CMessageLoop theLoop;
_Module.AddMessageLoop(&theLoop);

CMyMainWnd MyMainWnd;

if(MyMainWnd.CreateEx() == NULL)
{
ATLTRACE(_T("Main dialog creation failed!\n"));
return 0;
}

MyMainWnd.ShowWindow(nCmdShow);

int nRet = theLoop.Run();

_Module.RemoveMessageLoop();
return nRet;
// return 0;
}

int WINAPI _tWinMain(HINSTANCE hInstance, HINSTANCE /*hPrevInstance*/, LPTSTR lpstrCmdLine, int nCmdShow)
{
HRESULT hRes = ::CoInitialize(NULL);
// If you are running on NT 4.0 or higher you can use the following call instead to
// make the EXE free threaded. This means that calls come in on a random RPC thread.
// HRESULT hRes = ::CoInitializeEx(NULL, COINIT_MULTITHREADED);
ATLASSERT(SUCCEEDED(hRes));

// this resolves ATL window thunking problem when Microsoft Layer for Unicode (MSLU) is used
::DefWindowProc(NULL, 0, 0, 0L);

AtlInitCommonControls(ICC_COOL_CLASSES | ICC_BAR_CLASSES); // add flags to support other controls

hRes = _Module.Init(NULL, hInstance);
ATLASSERT(SUCCEEDED(hRes));

int nRet = Run(lpstrCmdLine, nCmdShow);

_Module.Term();
::CoUninitialize();

return nRet;
}