wince 图片处理

/*-----------------------------------------
* Copyright (c) 2010 Clark
* 文件名称： COM_IMAGE.h
* 摘要： 处理图片
* 作者： 陈泽丹
* 版本： 1.0
----------------------------------------*/
#pragma once

#include <Imaging.h>
#include <vector>

class COM_IMAGE
{
public:
 static bool G_Init();
 static void G_UnInit();
 COM_IMAGE();
 virtual ~COM_IMAGE(void);
 void loadFile(LPCWSTR lpResourceName);
 void drawImage(CDC* io_pDC, RECT i_rectDest, RECT i_rectSrc);
 int Width();
 int Hight();
 void Release();
 IImage* getIImage();

private:
 static IImagingFactory* g_pImageFactory;
 IImage* m_pIImage;
 
};

////////////////////////////////////////

 

#include "StdAfx.h"
#include <INITGUID.h>
#include "COM_IMAGE.h"
#include "AFX.h"

 

//#pragma comment (lib,”Ole32.lib”)
//#pragma comment(lib,"Imaging.lib")
//#pragma comment(lib,"uuid.lib")

IImagingFactory* COM_IMAGE::g_pImageFactory = NULL;

bool COM_IMAGE::G_Init()
{
 HRESULT hr;
 if (FAILED(hr = CoInitializeEx(NULL, COINIT_MULTITHREADED)))
 {
  TRACE(_T("Failed to COM_IMAGE!"));
  MessageBox (NULL, TEXT("COINIT_MULTITHREADED ERROR!"), TEXT(""), MB_TOPMOST | MB_OK);
  exit(0);
  return false;
 }
 if (SUCCEEDED (CoCreateInstance (CLSID_ImagingFactory, //创建图像对象
  NULL,
  CLSCTX_INPROC_SERVER,
  IID_IImagingFactory,
  (void **)&g_pImageFactory)))
 {
  return true;
 }
 else
 {
  g_pImageFactory = NULL;
  return false;
 }
}

void COM_IMAGE::G_UnInit()
{
 g_pImageFactory->Release();
 CoUninitialize(); //释放COM资源
}

COM_IMAGE::COM_IMAGE():m_pIImage(NULL)
{
}

COM_IMAGE::~COM_IMAGE(void)
{
 Release();
}

void COM_IMAGE::loadFile(LPCWSTR lpResourceName)
{
 HRSRC hrRes;
 HRESULT hr;
 HGLOBAL hGlobal;
 LPSTR lpRes;
 DWORD dwSize;
 HMODULE hModule_Current;
 hModule_Current = GetModuleHandle (NULL); //获得文件句柄
 hrRes = FindResource (hModule_Current, lpResourceName, RT_RCDATA); //查找资源
 dwSize = SizeofResource (GetModuleHandle (NULL), hrRes); //获得资源文件大小
 hGlobal = LoadResource (GetModuleHandle (NULL), hrRes); //加载文件
 lpRes = (LPSTR)LockResource (hGlobal); //锁定资源文件
 if (!SUCCEEDED (hr=g_pImageFactory->CreateImageFromFile (lpResourceName, &m_pIImage))) //从文件中创建对象
 {
  TRACE(_T("Failed to COM_IMAGE!"));
  AfxMessageBox(lpResourceName);
  DeleteObject(hrRes);
  exit(0);
 }
 DeleteObject(hrRes);
}

IImage* COM_IMAGE::getIImage()
{
 return m_pIImage;
}

void COM_IMAGE::drawImage(CDC* io_pDC, RECT i_rectDest, RECT i_rectSrc)
{
 ImageInfo imfo;
 m_pIImage->GetImageInfo(&imfo);
 double dDotPermmX = imfo.Xdpi / 25.4;
    double dDotPermmY = imfo.Ydpi / 25.4;
    //pSrcRect指向以像素点为单位的区域
     RECT rcSrc =
  {
   (LONG)(i_rectSrc.left / dDotPermmX / 0.01),
   (LONG)(i_rectSrc.top / dDotPermmY / 0.01),
   (LONG)(i_rectSrc.right / dDotPermmX / 0.01),
   (LONG)(i_rectSrc.bottom / dDotPermmY / 0.01)
  };  
 m_pIImage->Draw(*io_pDC, &i_rectDest, &rcSrc);
}

int COM_IMAGE::Width()
{
 ImageInfo imfo;
 m_pIImage->GetImageInfo(&imfo);
 return imfo.Width;
}

int COM_IMAGE::Hight()
{
 ImageInfo imfo;
 m_pIImage->GetImageInfo(&imfo);
 return imfo.Height;
}

void COM_IMAGE::Release()
{
 if( NULL != m_pIImage)
  m_pIImage->Release();
 m_pIImage = NULL;
}