C++文件操作——获取可执行文件或DLL版本信息

有时我们需要获取可执行文件或DLL文件的版本信息，用于比对工具版本是否需要更新，那么如何获取文件的版本信息呢？

如下是一种版本信息的获取方法，可供参考

#pragma comment(lib,"version.lib") #include <windows.h>#include <stdio.h>int GetVersionInfo(unsigned int* major_ver, unsigned int* minor_ver, unsigned int* build_num, unsigned int* revision_num){int status = 0;static unsigned int s_major_ver = 0;static unsigned int s_minor_ver = 0;static unsigned int s_build_num = 0;static unsigned int s_revision_num = 0;char VersionFilePath[MAX_PATH];char* buf = NULL;if( 0 == s_major_ver && 0 == s_minor_ver && 0 == s_build_num && 0 == s_revision_num ){char temp[1024];// get loading path//GetModuleHandle功能是获取一个应用程序或动态链接库的模块句柄。只有在当前进程的场景中，这个句柄才会有效。HMODULE h = GetModuleHandle("Test.dll"); if( GetModuleFileName(h,VersionFilePath,MAX_PATH) ==  0){status = -1;goto _ERROR;}// get file version indo//如果需要获取外部exe版本信息，可以直接将路径赋值给VersionFilePathDWORD dwHnd;DWORD dwVerInfoSize;if( 0 >= (dwVerInfoSize = GetFileVersionInfoSize(VersionFilePath,&dwHnd)) ){status = -2;goto _ERROR;}buf = new char[dwVerInfoSize];if( NULL == buf ){status = -3;goto _ERROR;}// get file version infoif(!GetFileVersionInfo(VersionFilePath,dwHnd,dwVerInfoSize,buf)){status = -4;goto _ERROR;}// Read the list of languages and code pages.struct LANGANDCODEPAGE{WORD    wLanguage;WORD    wCodePage;}*lpTranslate;unsigned int cbTranslate;if(!VerQueryValue(buf, "\\VarFileInfo\\Translation", (void**)&lpTranslate, &cbTranslate)){status = -5;goto _ERROR;}// get FileVersion string from resourceVS_FIXEDFILEINFO* p_version;unsigned int version_len = 0;if(!VerQueryValue(buf, "\\", (void**)&p_version, &version_len)){status = -6;goto _ERROR;}s_major_ver = (p_version->dwFileVersionMS >> 16) & 0x0000FFFF;s_minor_ver = p_version->dwFileVersionMS & 0x0000FFFF;s_build_num = (p_version->dwFileVersionLS >> 16) & 0x0000FFFF;s_revision_num = p_version->dwFileVersionLS & 0x0000FFFF;/* get File Commentsconst char* p_comments;unsigned int comments_len = 0;sprintf_s(temp, sizeof(temp), "\\StringFileInfo\\%04x%04x\\Comments", lpTranslate[0].wLanguage, lpTranslate[0].wCodePage);if(!VerQueryValue(buf, temp, (void**)&p_comments, &comments_len)){status = -7;goto _ERROR;}*/}// return version numberif( NULL != major_ver ){*major_ver = s_major_ver;}if( NULL != minor_ver ){*minor_ver = s_minor_ver;}if( NULL != build_num ){*build_num = s_build_num;}if( NULL != revision_num ){*revision_num = s_revision_num;}_ERROR:delete [] buf;return status;}

unsigned int MajorVersion;unsigned int MinorVersion;unsigned int BuildNumber;unsigned int RevisionNumber;static char VersionString[MAX_PATH];GetVersionInfo(&MajorVersion,       &MinorVersion,       &BuildNumber,       &RevisionNumber);if( 0 == RevisionNumber ){sprintf_s(VersionString, sizeof(VersionString), "VersionInfo: v%u.%u.%02u",MajorVersion,MinorVersion,BuildNumber);}else{sprintf_s(VersionString, sizeof(VersionString), "VersionInfo: v%u.%u.%02u.%02u",MajorVersion,MinorVersion,BuildNumber,RevisionNumber);}