PE文件释放资源

姑且算是有C和C++两个版本吧。

//C
BOOL GetResource(HMODULE mod, const char* rname, const char* rtype, unsigned char** rdata, int* rlen)
{
	HRSRC rhandle = FindResourceA(mod, rname, rtype);
	if (rhandle == NULL)
		return FALSE;
	*rlen = SizeofResource(mod, rhandle);
	HGLOBAL global_handle = LoadResource(mod, rhandle);
	if (NULL == global_handle)
		return FALSE;
	*rdata = LockResource(global_handle);
	if (*rdata)
	{
		DWORD flOldProtect;
		VirtualProtect(*rdata, *rlen, PAGE_READWRITE, &flOldProtect);
		return TRUE;
	}
	FreeResource(global_handle);
	return FALSE;
}

//C++
bool GetResource(HMODULE module, const char * rname, const char * rtype, byte* &rdata, int &rlen)
{
  HRSRC rhandle = FindResourceA(module, rname, rtype);
  if (rhandle == NULL)
    return false;
  rlen = SizeofResource(module, rhandle);
  HGLOBAL global_handle = LoadResource(module, rhandle);
  if (NULL == global_handle)
    return false;
  rdata = reinterpret_cast<byte*>(LockResource(global_handle));
  if (rdata)
  {
    DWORD flOldProtect;
    VirtualProtect(rdata, rlen, PAGE_READWRITE, &flOldProtect);
    return true;
  }
  FreeResource(global_handle);
  return false;
}