什么是内核对象?参考这里:
http://www.cnblogs.com/vivilisa/archive/2009/03/09/1407277.html
使用命名对象来防止运行一个应用程序的多个实例
代码如下:
int WINAPI _tWinMain(HINSTANCE hInstExe, HINSTANCE, PTSTR pszCmdLine, int nCmdShow)
{
HANDLE h = CreateMutex(NULL, FALSE, TEXT("{b2e42b57-8ee3-11df-bb01-846a855c3e23}"));
if(GetLastError() == ERROR_ALREADY_EXISTS)
{
CloseHandle(h);
return(0);
}
// This is the first instance of this application running.
// ...
// Before exiting, close the object.
CloseHandle(h);
return(0);
}