002

#include <windows.h>
#pragma comment(lib,"gdiplus.lib")
#include <gdiplus.h>
#include <stdio.h>
using namespace Gdiplus;

int GetEncoderClsid(const WCHAR* format, CLSID* pClsid)
{
UINT num = 0; // number of image encoders
UINT size = 0; // size of the image encoder array in bytes

ImageCodecInfo* pImageCodecInfo = NULL;

GetImageEncodersSize(&num, &size);
if(size == 0)
return -1; // Failure

pImageCodecInfo = (ImageCodecInfo*)(malloc(size));
if(pImageCodecInfo == NULL)
return -1; // Failure

GetImageEncoders(num, size, pImageCodecInfo);

for(UINT j = 0; j < num; ++j)
{
if( wcscmp(pImageCodecInfo[j].MimeType, format) == 0 )
{
*pClsid = pImageCodecInfo[j].Clsid;
free(pImageCodecInfo);
return j; // Success
}
}

free(pImageCodecInfo);
return -1; // Failure
}


INT main()
{
// Initialize GDI+.
GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR gdiplusToken;
GdiplusStartup(&gdiplusToken, &gdiplusStartupInput, NULL);

CLSID encoderClsid;
Status stat;

// Get a image file
Image* image = new Image(L"13lhc-600.jpg");


// Get the CLSID
GetEncoderClsid(L"image/jpeg", &encoderClsid);

//Draw someting
Graphics graphics(image);
Pen pen(Color(255, 0, 0, 255));
graphics.DrawLine(&pen, 0, 0, 50, 50);

// Save the image.
stat = image->Save(L"change.jpg", &encoderClsid);

if(stat == Ok)
wprintf(L"%s saved successfully.\n", L"change.jpg");
else
wprintf(L"%d Attempt to save %s failed.\n", stat, L"change.jpg");

delete image;
GdiplusShutdown(gdiplusToken);
return 0;
}