实验: 取exe和dll的全路径

最新推荐文章于 2026-01-01 15:57:12 发布

原创最新推荐文章于 2026-01-01 15:57:12 发布 · 1k 阅读

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#dll #exe #initialization #delete #null #mfc

本文介绍了一种使用C++实现的方法，该方法能够获取应用程序（EXE）及其加载的动态链接库（DLL）的完整路径。通过利用GetModuleFileName函数，并进行适当的字符串处理，可以准确地获取到这些文件的所在位置。

取exe全路径

// MyGetCurrentPath.cpp : Defines the entry point for the console application. // #include "stdafx.h" #include "MyGetCurrentPath.h" #include "MfcStdDllFrame_Export.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // The one and only application object CWinApp theApp; using namespace std; DWORD MyGetCurrentPath(PCHAR lpPath, DWORD dwSize, HMODULE hModule = NULL); int _tmain(int argc, TCHAR* argv[], TCHAR* envp[]) { int nRetCode = 0; // initialize MFC and print and error on failure if (!AfxWinInit(::GetModuleHandle(NULL), NULL, ::GetCommandLine(), 0)) { // TODO: change error code to suit your needs cerr << _T("Fatal Error: MFC initialization failed") << endl; nRetCode = 1; } else { HMODULE hModule = ::GetModuleHandle(NULL); PCHAR lpPathCur = NULL; DWORD dwSize = 0; //计算<全路径>的长度 DWORD dwLen = MyGetCurrentPath(lpPathCur, dwSize, hModule); //开Buufer, 取全路径 dwSize = dwLen + 1; lpPathCur = new CHAR[dwSize]; memset(lpPathCur, 0, dwSize); MyGetCurrentPath(lpPathCur, dwSize, hModule); printf("当前全路径是:%s/n", lpPathCur); delete lpPathCur; //testDll test(); getchar(); } return nRetCode; } DWORD MyGetCurrentPath(PCHAR lpPath, DWORD dwSize, HMODULE hModule) { const int const nLenPath = 4096; BOOL bCalculateLen = FALSE; PCHAR pPathTmp = NULL; DWORD dwLenPathTmp = 0; if(!lpPath) { bCalculateLen = TRUE; pPathTmp = new CHAR[nLenPath]; dwLenPathTmp = nLenPath; } else { bCalculateLen = FALSE; pPathTmp = lpPath; dwLenPathTmp = dwSize; } DWORD dwLenRc = GetModuleFileName(hModule, pPathTmp, dwLenPathTmp); if(dwLenRc <= 0) { return S_FALSE; } CString csPath = pPathTmp; int nPos = csPath.ReverseFind('//'); csPath = csPath.Left(nPos + 1); dwLenRc = csPath.GetLength(); if(bCalculateLen) { delete pPathTmp; pPathTmp = NULL; } if(!bCalculateLen) { strcpy(lpPath, (LPSTR)(LPCSTR)csPath); } return dwLenRc; }

取dll全路径

MFCSTDDLLFRAME_API int __stdcall test() { AFX_MANAGE_STATE(AfxGetStaticModuleState()); HMODULE hModule = theApp.m_hInstance;//dll的实例句柄 PCHAR lpPathCur = NULL; DWORD dwSize = 0; //计算<全路径>的长度 DWORD dwLen = _MyGetCurrentPath(lpPathCur, dwSize, hModule); //开Buufer, 取全路径 dwSize = dwLen + 1; lpPathCur = new CHAR[dwSize]; memset(lpPathCur, 0, dwSize); _MyGetCurrentPath(lpPathCur, dwSize, hModule); printf("DLL当前全路径是:%s/n", lpPathCur); delete lpPathCur; return S_OK; }

把Dll甩到Path环境变量中, 运行后可以看到路径不同