/* ------------------------------------------------------------------------- */

static PFNWGLGETEXTENSIONSSTRINGARBPROC _wglewGetExtensionsStringARB = NULL;

static PFNWGLGETEXTENSIONSSTRINGEXTPROC _wglewGetExtensionsStringEXT = NULL;

GLboolean GLEWAPIENTRY wglewGetExtension (const char* name)

{    

  const GLubyte* start;

  const GLubyte* end;

  if (_wglewGetExtensionsStringARB == NULL)

    if (_wglewGetExtensionsStringEXT == NULL)

      return GL_FALSE;

    else

      start = (const GLubyte*)_wglewGetExtensionsStringEXT();

  else

    start = (const GLubyte*)_wglewGetExtensionsStringARB(wglGetCurrentDC());

  if (start == 0)

    return GL_FALSE;

  end = start + _glewStrLen(start);

  return _glewSearchExtension(name, start, end);

}

GLenum GLEWAPIENTRY wglewContextInit (WGLEW_CONTEXT_ARG_DEF_LIST)

{

  GLboolean crippled;

  const GLubyte* extStart;

  const GLubyte* extEnd;

  /* find wgl extension string query functions */

  _wglewGetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC)glewGetProcAddress((const GLubyte*)"wglGetExtensionsStringARB");

  _wglewGetExtensionsStringEXT = (PFNWGLGETEXTENSIONSSTRINGEXTPROC)glewGetProcAddress((const GLubyte*)"wglGetExtensionsStringEXT");

  /* query wgl extension string */

  if (_wglewGetExtensionsStringARB == NULL)

    if (_wglewGetExtensionsStringEXT == NULL)

      extStart = (const GLubyte*)"";

    else

      extStart = (const GLubyte*)_wglewGetExtensionsStringEXT();

  else

    extStart = (const GLubyte*)_wglewGetExtensionsStringARB(wglGetCurrentDC());

  extEnd = extStart + _glewStrLen(extStart);

  /* initialize extensions */

  crippled = _wglewGetExtensionsStringARB == NULL && _wglewGetExtensionsStringEXT == NULL;