Event enumeration:compiles,links no output
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It complies and links but shows no output.It is suppose to enlist the application log files. #include #include void DisplayEntries( ) { const int BUFFER_SIZE=1000; HANDLE h; EVENTLOGRECORD *pevlr; BYTE bBuffer[BUFFER_SIZE]; DWORD dwRead, dwNeeded, cRecords, dwThisRecord = 0; // Open the Application event log. h = OpenEventLog( NULL, // use local computer "Application"); // source name if (h == NULL) { printf("yahooo1");} // ErrorExit("Could not open the Application event log."); pevlr = (EVENTLOGRECORD *) &bBuffer; // Opening the event log positions the file pointer for this // handle at the beginning of the log. Read the records // sequentially until there are no more. while (ReadEventLog(h, // event log handle EVENTLOG_FORWARDS_READ | // reads forward EVENTLOG_SEQUENTIAL_READ, // sequential read 0, // ignored for sequential reads pevlr, // pointer to buffer BUFFER_SIZE, // size of buffer &dwRead, // number of bytes read &dwNeeded)) // bytes in next record { while (dwRead > 0) { // Print the event identifier, type, and source name. // The source name is just past the end of the // formal structure. printf("%02d Event ID: 0x%08X ", dwThisRecord++, pevlr->EventID); printf("EventType: %d Source: %s\n", pevlr->EventType, (LPSTR) ((LPBYTE) pevlr + sizeof(EVENTLOGRECORD))); dwRead -= pevlr->Length; pevlr = (EVENTLOGRECORD *) ((LPBYTE) pevlr + pevlr->Length); } pevlr = (EVENTLOGRECORD *) &bBuffer; } CloseEventLog(h); } int WINAPI WinMain(HINSTANCE h,HINSTANCE p,LPSTR l,int n) { DisplayEntries(); return 0; }
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It complies and links but shows no output.It is suppose to enlist the application log files. #include #include void DisplayEntries( ) { const int BUFFER_SIZE=1000; HANDLE h; EVENTLOGRECORD *pevlr; BYTE bBuffer[BUFFER_SIZE]; DWORD dwRead, dwNeeded, cRecords, dwThisRecord = 0; // Open the Application event log. h = OpenEventLog( NULL, // use local computer "Application"); // source name if (h == NULL) { printf("yahooo1");} // ErrorExit("Could not open the Application event log."); pevlr = (EVENTLOGRECORD *) &bBuffer; // Opening the event log positions the file pointer for this // handle at the beginning of the log. Read the records // sequentially until there are no more. while (ReadEventLog(h, // event log handle EVENTLOG_FORWARDS_READ | // reads forward EVENTLOG_SEQUENTIAL_READ, // sequential read 0, // ignored for sequential reads pevlr, // pointer to buffer BUFFER_SIZE, // size of buffer &dwRead, // number of bytes read &dwNeeded)) // bytes in next record { while (dwRead > 0) { // Print the event identifier, type, and source name. // The source name is just past the end of the // formal structure. printf("%02d Event ID: 0x%08X ", dwThisRecord++, pevlr->EventID); printf("EventType: %d Source: %s\n", pevlr->EventType, (LPSTR) ((LPBYTE) pevlr + sizeof(EVENTLOGRECORD))); dwRead -= pevlr->Length; pevlr = (EVENTLOGRECORD *) ((LPBYTE) pevlr + pevlr->Length); } pevlr = (EVENTLOGRECORD *) &bBuffer; } CloseEventLog(h); } int WINAPI WinMain(HINSTANCE h,HINSTANCE p,LPSTR l,int n) { DisplayEntries(); return 0; }
it uses windows.h and stdio.h headers
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It complies and links but shows no output.It is suppose to enlist the application log files. #include #include void DisplayEntries( ) { const int BUFFER_SIZE=1000; HANDLE h; EVENTLOGRECORD *pevlr; BYTE bBuffer[BUFFER_SIZE]; DWORD dwRead, dwNeeded, cRecords, dwThisRecord = 0; // Open the Application event log. h = OpenEventLog( NULL, // use local computer "Application"); // source name if (h == NULL) { printf("yahooo1");} // ErrorExit("Could not open the Application event log."); pevlr = (EVENTLOGRECORD *) &bBuffer; // Opening the event log positions the file pointer for this // handle at the beginning of the log. Read the records // sequentially until there are no more. while (ReadEventLog(h, // event log handle EVENTLOG_FORWARDS_READ | // reads forward EVENTLOG_SEQUENTIAL_READ, // sequential read 0, // ignored for sequential reads pevlr, // pointer to buffer BUFFER_SIZE, // size of buffer &dwRead, // number of bytes read &dwNeeded)) // bytes in next record { while (dwRead > 0) { // Print the event identifier, type, and source name. // The source name is just past the end of the // formal structure. printf("%02d Event ID: 0x%08X ", dwThisRecord++, pevlr->EventID); printf("EventType: %d Source: %s\n", pevlr->EventType, (LPSTR) ((LPBYTE) pevlr + sizeof(EVENTLOGRECORD))); dwRead -= pevlr->Length; pevlr = (EVENTLOGRECORD *) ((LPBYTE) pevlr + pevlr->Length); } pevlr = (EVENTLOGRECORD *) &bBuffer; } CloseEventLog(h); } int WINAPI WinMain(HINSTANCE h,HINSTANCE p,LPSTR l,int n) { DisplayEntries(); return 0; }
brilliant101 wrote: printf("%02d Event ID: 0x%08X ", ... int WINAPI WinMain(HINSTANCE h,HINSTANCE p,LPSTR l,int n) These are mutually exclusive statements.
WinMain()assumes a GUI application whereasprintf()assumes a console application. For testing purposes, I would changeWinMain()to bemain()instead.
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