VS2008 ATL 创建的Windows服务中使用MessageBox

Question

过程如下：
1.创建一个ATL的Windows服务。
2. 仅仅写一个MessageBox。
extern "C" int WINAPI _tWinMain(HINSTANCE /*hInstance*/, HINSTANCE /*hPrevInstance*/,
                                LPTSTR /*lpCmdLine*/, int nShowCmd)
{
 MessageBox(NULL,L"T",L"T",0);
    return _AtlModule.WinMain(nShowCmd);
}


现象，程序退出时在显示输出窗口中输出，其中0x100109da 部分会随机变化

XX.exe 中的 0x100109da 处最可能的异常: 0xC0000005: 读取位置 0x00000000 时发生访问冲突

有什么解释吗？

Answer 1

服务里面显示MessageBox?有谁会去点“确定”？

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Answer 2

这个是用来调试程序的时候，希望能够用MessageBox把信息直接打印出来，实际过程当然不会这样了，呵呵

Answer 3

你可以在调试器中运行服务，然后用outputdebugstring输出调试信息，或者写系统的事件日志

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