#include <winbase.h>
#define UNICODE
#include <comdef.h>
#ifndef ULONG_PTR
#define ULONG_PTR unsigned long*
#include <GdiPlus.h>
using namespace Gdiplus;
#endif

GdiplusStartupInput gdiplusStartupInput;
ULONG_PTR          gdiplusToken;

GdiplusShutdown(gdiplusToken);

Bitmap *pBitmap = new Bitmap(width, height, PixelFormat24bppRGB);

Graphics *g = Graphics::FromImage(pBitmap);

Pen pen_black(Color(255, 0, 0, 0), 3);
g->DrawLine(&pen_black, 0, 0, 100, 100);

bool GetEncoderClsid(const WCHAR* format, CLSID* pClsid)
{
  UINT num, size;
  Gdiplus::GetImageEncodersSize(&num, &size);
  Gdiplus::ImageCodecInfo* pImageCodecInfo = (Gdiplus::ImageCodecInfo*)(malloc(size));
  Gdiplus::GetImageEncoders(num, size, pImageCodecInfo);
  bool found = false;
  for (UINT ix = 0; !found && ix < num; ++ix) {
    if (0 == _wcsicmp(pImageCodecInfo[ix].MimeType, format) == 0) {
      *pClsid = pImageCodecInfo[ix].Clsid;
      found = true;
    }
  }
  free(pImageCodecInfo);
  return found;
}
......

CLSID encoder;
GetEncoderClsid(L"mime/bmp", &encoder);
pb->Save(L"result.bmp", &encoder, NULL);

int errno;

#define errno (*__errno_location ())

int *
#if ! USE___THREAD
weak_const_function
#endif
__errno_location (void)                                                                                                                                     
{
  return &errno;
}

__thread int errno;

$ mkdir repos
$ svnadmin create repos
$ ls repos/
conf  db  format  hooks  locks  README.txt
$ ls repos/hooks/
post-commit.tmpl  post-revprop-change.tmpl  pre-commit.tmpl  pre-revprop-change.tmpl  start-commit.tmpl
post-lock.tmpl    post-unlock.tmpl          pre-lock.tmpl    pre-unlock.tmpl
$ cd repos/hooks
$ cp post-commit.tmpl post-commit
$ chmod +x post-commit
$ vi post-commit
……