PictureEx使用及图片居中等修改

最近项目中要显示gif动态图片，偶然中发现一个不错的类PictureEx，显示gif非常的溜。 在博客作了介绍：https://blog.csdn.net/xxm524/article/details/80785856 不过也发现它不支持图片居中、图片按原比例显示能操作，因此做了一些小的修改来支持。 由于网上介绍PictureEx类的文章太多了，这里不再赘述，只介绍图片居中显示和图片铺满控件的修改。

// 004_PictureExDemo.cpp : Defines the class behaviors for the application.
//

#include “stdafx.h“
#include “004_PictureExDemo.h“
#include “004_PictureExDemoDlg.h“

#ifdef _DEBUG
#define new DEBUG_NEW
#endif


// CMy004_PictureExDemoApp

BEGIN_MESSAGE_MAP（CMy004_PictureExDemoApp CWinApp）
	ON_COMMAND（ID_HELP &CWinApp::onhelp）
END_MESSAGE_MAP（）


// CMy004_PictureExDemoApp construction

CMy004_PictureExDemoApp::CMy004_PictureExDemoApp（）
{
	// support Restart Manager
	m_dwRestartManagerSupportFlags = AFX_RESTART_MANAGER_SUPPORT_RESTART;

	// TODO: add construction code here
	// Place all significant initialization in InitInstance
}


// The one and only CMy004_PictureExDemoApp object

CMy004_PictureExDemoApp theApp;


// CMy004_PictureExDemoApp initialization

BOOL CMy004_PictureExDemoApp::InitInstance（）
{
	// InitCommonControlsEx（） is required on Windows XP if an application
	// manifest specifies use of ComCtl32.dll version 6 or later to enable
	// visual styles.  Otherwise any window creation will fail.
	INITCOMMONCONTROLSEX InitCtrls;
	InitCtrls.dwSize = sizeof（InitCtrls）;
	// Set this to include all the common control classes you want to use
	// in your application.
	InitCtrls.dwICC = ICC_WIN95_CLASSES;
	InitCommonControlsEx（&InitCtrls）;

	CWinApp::InitInstance（）;


	AfxEnableControlContainer（）;

	// Create the shell manager in case the dialog contains
	// any shell tree view or shell list view controls.
	CShellManager *pShellManager = new CShellManager;

	// Activate “Windows Native“ visual manager for enabling themes in MFC controls
	CMFCVisualManager::SetDefaultManager（RUNTIME_CLASS（CMFCVisualManagerWindows））;

	// Standard initialization
	// If you are not using these features and wish to reduce the size
	// of your final executable you should remove from the following
	// the specific initialization routines you do not need
	// Change the registry key under which our settings are stored
	// TODO: You should modify this string to be something appropriate
	// such as the name of your company or organization
	SetRegistryKey（_T（“Local AppWizard-Generated Applications“））;

	CMy004_PictureExDemoDlg dlg;
	m_pMainWnd = &dlg;
	INT_PTR nResponse = dlg.DoModal（）;
	if （nResponse == IDOK）
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with OK
	}
	else if （nResponse == IDCANCEL）
	{
		// TODO: Place code here to handle when the dialog is
		//  dismissed with Cancel
	}
	else if （nResponse == -1）
	{
		TRACE（traceAppMsg 0 “Warning: dialog creation failed so application is terminating unexpectedly.\n“）;
		TRACE（traceAppMsg 0 “Warning: if you are using MFC controls on the dialog you cannot #define _AFX_NO_MFC_CONTROLS_IN_DIALOGS.\n“）;
	}

	// Delete the shell manager created above.
	if （pShellManager != NULL）
	{
		delete pShellManager;
	}

#ifndef _AFXDLL
	ControlBarCleanUp（）;
#endif

	// Since the dialog has been clos

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----
     目录           0  2018-06-23 18:25  004_PictureExDemo\
     目录           0  2018-06-23 16:15  004_PictureExDemo\.vs\
     目录           0  2018-06-23 16:15  004_PictureExDemo\.vs\004_PictureExDemo\
     目录           0  2018-06-23 16:15  004_PictureExDemo\.vs\004_PictureExDemo\v14\
     文件       52736  2018-06-23 18:25  004_PictureExDemo\.vs\004_PictureExDemo\v14\.suo
     目录           0  2018-06-23 18:25  004_PictureExDemo\004_PictureExDemo\
     文件        3128  2018-06-23 16:15  004_PictureExDemo\004_PictureExDemo\004_PictureExDemo.cpp
     文件         579  2018-06-23 16:15  004_PictureExDemo\004_PictureExDemo\004_PictureExDemo.h
     文件       14146  2018-06-23 18:00  004_PictureExDemo\004_PictureExDemo\004_PictureExDemo.rc
     文件       10969  2018-06-23 18:22  004_PictureExDemo\004_PictureExDemo\004_PictureExDemo.vcxproj
     文件        2541  2018-06-23 16:19  004_PictureExDemo\004_PictureExDemo\004_PictureExDemo.vcxproj.filters
     文件         632  2018-06-23 18:15  004_PictureExDemo\004_PictureExDemo\004_PictureExDemo.vcxproj.user
     文件        5053  2018-06-23 18:03  004_PictureExDemo\004_PictureExDemo\004_PictureExDemoDlg.cpp
     文件         954  2018-06-23 18:02  004_PictureExDemo\004_PictureExDemo\004_PictureExDemoDlg.h
     文件       34745  2018-06-23 18:08  004_PictureExDemo\004_PictureExDemo\PictureEx.cpp
     文件       10681  2018-06-23 18:04  004_PictureExDemo\004_PictureExDemo\PictureEx.h
     文件        5756  2018-06-23 16:15  004_PictureExDemo\004_PictureExDemo\ReadMe.txt
     目录           0  2018-06-23 16:15  004_PictureExDemo\004_PictureExDemo\res\
     文件       67777  2015-09-20 17:20  004_PictureExDemo\004_PictureExDemo\res\004_PictureExDemo.ico
     文件         822  2018-06-23 16:15  004_PictureExDemo\004_PictureExDemo\res\My004_PictureExDemo.rc2
     文件        2022  2018-06-23 18:00  004_PictureExDemo\004_PictureExDemo\resource.h
     文件         219  2018-06-23 16:15  004_PictureExDemo\004_PictureExDemo\stdafx.cpp
     文件        1753  2018-06-23 16:15  004_PictureExDemo\004_PictureExDemo\stdafx.h
     文件         314  2018-06-23 16:15  004_PictureExDemo\004_PictureExDemo\targetver.h
     文件        1939  2018-06-23 18:13  004_PictureExDemo\004_PictureExDemo\TestDlg.cpp
     文件         572  2018-06-23 16:24  004_PictureExDemo\004_PictureExDemo\TestDlg.h
     文件        1333  2018-06-23 16:15  004_PictureExDemo\004_PictureExDemo.sln
     目录           0  2018-06-23 18:25  004_PictureExDemo\bin\
     文件     3574784  2018-06-23 18:22  004_PictureExDemo\bin\004_PictureExDemo.exe
     文件     4271315  2018-06-23 15:30  004_PictureExDemo\bin\1.gif
     文件      172294  2018-06-23 16:05  004_PictureExDemo\bin\1.jpg
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