Posted on 2006-12-04 18:44
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#include <Stdio.h>
#include <Objbase.h>
#include <Windows.h>
#include <Gdiplus.h>
#include <GdiPlusEnums.h>
using namespace Gdiplus;
#pragma comment(lib,"gdiplus")
int GetCodecClsid(const WCHAR*, CLSID*);
HRESULT __fastcall AnsiToUnicode(LPCSTR pszA, LPOLESTR* ppszW)
{
ULONG cCharacters;
DWORD dwError;
if (NULL == pszA)
{
*ppszW = NULL;
return NOERROR;
}
cCharacters = strlen(pszA)+1;
*ppszW = (LPOLESTR) CoTaskMemAlloc(cCharacters*2);
if (NULL == *ppszW)
return E_OUTOFMEMORY;
if (0 == MultiByteToWideChar(CP_ACP, 0, pszA, cCharacters,*ppszW, cCharacters))
{
dwError = GetLastError();
CoTaskMemFree(*ppszW);
*ppszW = NULL;
return HRESULT_FROM_WIN32(dwError);
}
return NOERROR;
}
int main()
{
int n_ret=0;
char *pic[2]={NULL,NULL};
pic[0]=new char [128];
pic[1]=new char[128];
sprintf(pic[0],"ok.gif");
sprintf(pic[1],"shangcheng_1.bmp");//"default.gif");
GdiplusStartupInput gdiplusStartupInput;
ULONG gdiplusToken;
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);
{
CLSID codecClsid;
Status stat;
EncoderParameters encoderParameters;
GetCodecClsid(L"image/gif", &codecClsid);
encoderParameters.Count = 0;
LPOLESTR bstr_src_img;
LPOLESTR bstr_dst_fn;
AnsiToUnicode(pic[0],&bstr_dst_fn);
AnsiToUnicode(pic[1],&bstr_src_img);
Image image(bstr_src_img);
stat =image.Save(bstr_dst_fn, &codecClsid, &encoderParameters);
if(stat == Ok)
{
n_ret=0;
wprintf(L"%s saved successfully.\n",bstr_dst_fn);
}
else
{
n_ret=-2;
wprintf(L"%d Attempt to save %s failed.\n", stat, bstr_dst_fn);
}
CoTaskMemFree(bstr_dst_fn);
CoTaskMemFree(bstr_src_img);
}
GdiplusShutdown(gdiplusToken);
return 0;
}
int GetCodecClsid(const WCHAR* format, CLSID* pClsid)
{
UINT num = 0;
UINT size = 0;
ImageCodecInfo* pImageCodecInfo = NULL;
GetImageEncodersSize(&num, &size);
if(size == 0)
return -1;
pImageCodecInfo = (ImageCodecInfo*)(malloc(size));
if(pImageCodecInfo == NULL)
return -1;
GetImageEncoders(num, size, pImageCodecInfo);
for(UINT j = 0; j < num; ++j)
{
if( wcscmp(pImageCodecInfo[j].MimeType, format) == 0 )
{
*pClsid = pImageCodecInfo[j].Clsid;
return j;
}
}
return -1;
}