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SLogResult * getLogResult(char whereclause[300]) SLogResult * CLogPickDlg::LoadDLLGetLog(CString filter) { typedef UINT (CALLBACK* LPFNGETLOG)(char fi[300]); HINSTANCE hInstance1; LPFNGETLOG lpSquartRoot1; hInstance1 = ::LoadLibrary("getlog.exe"); if (hInstance1 != NULL) { lpSquartRoot1 = (LPFNGETLOG)::GetProcAddress(hInstance1,"getLogResult"); if(!lpSquartRoot1) { ::FreeLibrary(hInstance1); AfxMessageBox("定位动态链接库方法出错!!!"); } else { char fil[300]; const char *fil1=NULL; fil1=(LPCTSTR)filter; strcpy(fil,fil1); strcat(fil,"\0"); this->p_logfromc=(SLogResult *)lpSquartRoot1(fil);//err this->getLogFromC(); } ::FreeLibrary(hInstance1); } return p_logfromc; } 但运行时总是出错（Debug error,the value of ESP was not properly saved across a function call....) 可我的参数信息没错呀，专家指导一下！· |
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This error is most commonly called by mixing __stdcall and
__cdecl. In one definition, you specify __stdcall. In the other you don't, and the function defaults to __cdecl. __stdcall and __cdecl calling conventions have different rules regarding parameter passing and stack cleanup. The debugger is telling you that your code has messed up the stack. |
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这一句是不是要检查一下？
typedef UINT (CALLBACK* LPFNGETLOG)(char fi[300]); |
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Extern "C" 函数定义
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kingzai(kingzai)
那你说该怎么办呢？ |
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typedef UINT (CALLBACK* __stdcall LPFNGETLOG)(char fi[300]);
//不知行不行。 和这个问题相关大家来看看。 http://expert.csdn.net/Expert/topic/2138/2138152.xml?temp=.4941675 |
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不行，还是出同样的错误！
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我另外一个方法是没有参数的，这样用不会有问题，
也就是说，问题的关键在于参数。 |
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我这样写可以调用过去，可是过去以后就出错了（到调用者函数的结尾处）这应该跟栈有关。
希望大家多多帮助！ void CLogPickDlg::LoadDLLGetLog(CString filter) { typedef SLogResult * (LPFNGETLOG)(char[]); HINSTANCE hInstance1; LPFNGETLOG *lpSquartRoot1; hInstance1 = ::LoadLibrary("win32dll.dll"); if (hInstance1 != NULL) { lpSquartRoot1 = (LPFNGETLOG *)::GetProcAddress(hInstance1,"getLogResult"); if(!lpSquartRoot1) { ::FreeLibrary(hInstance1); AfxMessageBox("定位动态链接库方法出错!!!"); return; } else { CString tempstr; char fil[300]; const char *fil1=NULL; fil1=(LPCTSTR)filter; strcpy(fil,fil1); this->p_logfromc=lpSquartRoot1(fil); while((p_logfromc[i].id!="")&&(i<MAXRESULT)) { } ::FreeLibrary(hInstance1); } return; } |
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up
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谁分配的内存，就让它提供一个释放内存的函数，用完后调用之!
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把这个函数
SLogResult * getLogResult(char whereclause[300]); 贴出来,同时把SLogResult的定义贴出来. |
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已经得到解决，是我的DLL内存管理有问题，但是我用C调用该DLL时并没有出问题。不知道这是为什么？
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