CxImage類庫介紹
CxImage類庫是一個幾乎可以管理所有的圖象文件的C++類庫。它可以快捷地存取、顯示、轉換各種圖像。
其他的圖形庫？有那么多優秀的圖形庫，如OpenIL,FreeImage,PaintLib等等，它們是功能強大，齊全，而且是經常更新的。然而，如果你要使用他們，你可能會遇到一些麻煩，，因為它們大部分是平臺無關的，用C語言寫成，有的還夾雜著基本的C++ wrapper和大量的編譯選項的聲明需要你去處理。現在，一個新的GDI+類庫來了，或許CxImage不是最有用的，但是至少你是有源代碼的。這個類庫不是MFC類庫，完全是一個windows類庫，因為一些特殊的構造和繪圖函數，但是基礎是平臺無關的。

一.在你的程序中使用CxImage(Using MFC in Shared DLL + Debug 模式)

1.下載CxImage類庫
地址：http://www.xdp.it/download.htm

??????????http://www.codeproject.com/bitmap/cximage.asp

下載Download full source files (full) - 2.10 Mb?

2.解壓壓縮包，并編譯Demo2/Console.dsw，這個過程可能比較慢，中間文件為60M?

3.編譯完成后搜索*.lib文件，一共搜索出10個文件，把它們復制到你的工程目錄中(任意)
它們分別為：CxImage.lib Jpeg.lib png.lib Tiff.lib jbig.lib zlib.lib j2k.lib cximagecrtd.lib(最后一個為靜態MFC庫時使用)

4.找到壓縮包中的CxImage文件夾，把它里面的所有.h頭文件，復制到你的工程目錄中(任意)

5.在StdAfx.h文件中,添加這些文件

// stdafx.h : include file for standard system include files,

// or project specific include files that are used frequently, but

// are changed infrequently

//

#if !defined(AFX_STDAFX_H__84F27293_E63B_443C_BA35_5322307D48DA__INCLUDED_)

#define AFX_STDAFX_H__84F27293_E63B_443C_BA35_5322307D48DA__INCLUDED_

#if _MSC_VER > 1000

#pragma once

#endif // _MSC_VER > 1000

#define VC_EXTRALEAN // Exclude rarely-used stuff from Windows headers

#include <afxwin> // MFC core and standard components

#include <afxext> // MFC extensions

#include <afxdisp> // MFC Automation classes

#include <afxdtctl> ?? // MFC support for Internet Explorer 4 Common Controls

#ifndef _AFX_NO_AFXCMN_SUPPORT

#include <afxcmn> ?? // MFC support for Windows Common Controls

#endif // _AFX_NO_AFXCMN_SUPPORT

//添加CxImage到你的程序中(目錄為你上面添加位置,我把它們放在了lib文件夾中了)

#include "lib/ximage.h"

//#pragma comment(lib,"lib/cximagecrtd.lib") //靜態鏈接庫時使用

#pragma comment(lib,"lib/cximage.lib")

#pragma comment(lib,"lib/Jpeg.lib")

#pragma comment(lib,"lib/consoled.lib")

#pragma comment(lib,"lib/png.lib")

#pragma comment(lib,"lib/zlib.lib")

#pragma comment(lib,"lib/tiff.lib")

#pragma comment(lib,"lib/jasper.lib")

#pragma comment(lib,"lib/j2k.lib")

#pragma comment(lib,"lib/jbig.lib")

//{{AFX_INSERT_LOCATION}}

// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_STDAFX_H__84F27293_E63B_443C_BA35_5322307D48DA__INCLUDED_)

6.這樣就可以在你的程序中使用CxImage類了

7.演示程序

void CTestDlg::OnButton1()

{

// TODO: Add your control notification handler code here

//取得你的圖片資源文件IDB_BITMAP1

HBITMAP bitmap = ::LoadBitmap(AfxGetInstanceHandle(),

MAKEINTRESOURCE(IDB_BITMAP1));

//創建對象

CxImage *newImage = new CxImage();

newImage->CreateFromHBITMAP(bitmap);

//存儲為文件,我發現的可以使用的有6個格式有三個格式未使用成功(gif,wbmg,wmf)....夠用了吧?

newImage->Save("image.bmp",CXIMAGE_FORMAT_BMP); //注意不是CXIMAGE_SUPPORT_BMP

newImage->Save("image.tga",CXIMAGE_FORMAT_TGA);

newImage->Save("image.pcx",CXIMAGE_FORMAT_PCX);

newImage->Save("image.jpg",CXIMAGE_FORMAT_JPG);

newImage->Save("image.png",CXIMAGE_FORMAT_PNG);

newImage->Save("image.tiff",CXIMAGE_FORMAT_TIF);

newImage->Save("image.gif",CXIMAGE_FORMAT_GIF); //不成功,只能讀取第一貞圖片?

newImage->Save("image.wbmp",CXIMAGE_FORMAT_WBMP); //不成功

newImage->Save("image.wmf",CXIMAGE_FORMAT_WMF); //不成功

newImage->Save("image.mng",CXIMAGE_FORMAT_MNG); //默認-未打開此項功能

newImage->Save("image.jbig",CXIMAGE_FORMAT_JBG); //默認-未打開此項功能

/*

* CxImage配置文件ximacfg.h

* #define CXIMAGE_SUPPORT_BMP 1 //可用狀態(即不可取得和轉換成這種格式)

* #define CXIMAGE_SUPPORT_MNG 0 //不可用狀態

*/

}

其他說明
1.所支持的格式(in Doc)
formats?#define?required libraries?size [Kbyte]?BMP?
GIF?
ICO?
TGA?
PCX?
WBMP?
WMF CXIMAGE_SUPPORT_BMP?
CXIMAGE_SUPPORT_GIF?
CXIMAGE_SUPPORT_ICO?
CXIMAGE_SUPPORT_TGA?
CXIMAGE_SUPPORT_PCX?
CXIMAGE_SUPPORT_WBMP?
CXIMAGE_SUPPORT_WMF?
built in?
24 JPEG CXIMAGE_SUPPORT_JPG?
jpeg?
88 PNG CXIMAGE_SUPPORT_PNG?
png, zlib?
104 MNG CXIMAGE_SUPPORT_MNG?
mng, zlib, jpeg?
148 TIFF CXIMAGE_SUPPORT_TIF?
tiff, zlib, jpeg?
124 JBIG CXIMAGE_SUPPORT_JBG?
jbig?
28 PNM,PPM,PGM?
RAS CXIMAGE_SUPPORT_PNM?
CXIMAGE_SUPPORT_RAS?
jasper?
176 JPEG-2000 CXIMAGE_SUPPORT_JP2?
CXIMAGE_SUPPORT_JPC?
CXIMAGE_SUPPORT_PGX?
jasper?
176?
2.格式轉換示例

CxImage image;

// bmp -> jpg

image.Load("image.bmp", CXIMAGE_FORMAT_BMP);

if (image.IsValid()){

if(!image.IsGrayScale()) image.IncreaseBpp(24);

image.SetJpegQuality(99);

image.Save("image.jpg",CXIMAGE_FORMAT_JPG);

}

// png -> tif

image.Load("image.png", CXIMAGE_FORMAT_PNG);

if (image.IsValid()){

image.Save("image.tif",CXIMAGE_FORMAT_TIF);

}

3.使用CxImage(In Doc),至今未弄懂....也沒按這個弄好過...不知道為什么

Project Settings

|- C/C++

| |- Code Generation

| | |- Use run-time library : Multithreaded DLL (must be the same for

| | | all the linked libraries)

| | |- Struct member alignment : must be the same for all the linked

| | | libraries

| |- Precompiled headers : not using precompiled headers

| |- Preprocessor

| |- Additional Include Directories: ..cximage

|- Link

|- General

|- Object/library modules: ../png/Debug/png.lib

../jpeg/Debug/jpeg.lib

../zlib/Debug/zlib.lib

../tiff/Debug/tiff.lib

../jasper/Debug/jasper.lib

../cximage/Debug/cximage.lib ...

二.使用CxImage(Using MFC in a Static Library + Debug 模式)
1.解壓壓縮包,打開Demo2/Console.dsw，設置如下:
Project -> Setting -> Using MFC in a Static Library(注意是所有的項目都設置成這個)
2.確保c/c++ -> Code Generation -> Using run-time library 為 Mutithreaded
3.Debug模式下編譯,搜索*.lib文件,復制到工程目錄,包含進工程(當前工程也必須是Using MFC in a Static Library + Debug 模式),即可,包含方法同上
注意:生成的LIB文件,比上面要少一個....不知道為什么...少了consoled.lib,但并無大礙,不包含它即可

三.使用CxImage(Using MFC in a Static Library + Realese 模式)
1.解壓壓縮包,打開Demo2/Console.dsw，設置如下:
Project -> Setting -> Using MFC in a Static Library(注意是所有的項目都設置成這個)
2.確保c/c++ -> Code Generation -> Using run-time library 為 Mutithreaded
3.Realese模式下編譯,搜索*.lib文件,復制到工程目錄,包含進工程(當前工程也必須是Using MFC in a Static Library + Realese模式),即可,包含方法同上
注意:生成的LIB文件,同樣是少一個,不包含它即可

參考:
Open the CxImage workspace with all the libraries. Select Project->Properties. Select each project in the list and make sure they all have the same settings for the MFC library (Not Using MFC for a static library). Then select the C/C++ tab and select Code Generation in the combo box. In the Use Run-time Library combo box, make sure all of them are set to Single-Threaded (or multi threaded depending on your settings). Then remake all the libraries and try to recompile your project
Thanks Kelly. It works! Thanks again!:) It turns out that CxImage static lib projects, in my case, are not set uniformly the same; some uses MFC shared library while some uses MFC static library

總結

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