dump檔案可以很好的捕獲到程式crash的異常點。

pro檔案設定如下：

#dump 除錯
#DEFINES += WITH_DUMP
contains(DEFINES, WITH_DUMP){
QMAKE_CXXFLAGS_RELEASE = $$QMAKE_CXXFLAGS_RELEASE_WITH_DEBUGINFO
QMAKE_LFLAGS_RELEASE = $$QMAKE_LFLAGS_RELEASE_WITH_DEBUGINFO
LIBS += -lDbghelp
message("WITH_DUMP")
}else{
message("WITHOUT_DUMP")
}

main.cpp檔案新增生成程式碼如下：

#ifdef WITH_DUMP
#include <dbghelp.h>
#include <exception>
#endif

#ifdef WITH_DUMP

long ApplicationCrashHandler(EXCEPTION_POINTERS *pException)
{
    QString strdir = QString("%1/dump").arg(qApp->applicationDirPath());
    XCore::dirCreate(strdir);
    QDateTime dtcur = QDateTime::currentDateTime();
    QString strcur 
 
= dtcur.toString("yyyyMMddhhmmss");
    QString strfile = QString("%1/%2.dmp").arg(strdir).arg(strcur);

    EXCEPTION_RECORD *record = pException->ExceptionRecord;
    XCore::writeFile(QString::number(record->ExceptionCode, 16), "dump");
    XCore::writeFile(QString::number(record->ExceptionFlags, 16
 
), "dump");

    //建立 Dump 檔案
    HANDLE hDumpFile = CreateFile((LPCWSTR)strfile.utf16(),
                                  GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
    if(hDumpFile != INVALID_HANDLE_VALUE)
    {
        //Dump資訊
        MINIDUMP_EXCEPTION_INFORMATION dumpInfo;
        dumpInfo.ExceptionPointers = pException;
        dumpInfo.ThreadId = GetCurrentThreadId();
        dumpInfo.ClientPointers = TRUE;
        //寫入Dump檔案內容
        MiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(),hDumpFile, MiniDumpNormal, &dumpInfo, NULL, NULL);
        CloseHandle(hDumpFile);
    }else{
        XCore::writeFile("create dump file failed", "dump");
    }

    return EXCEPTION_EXECUTE_HANDLER;
}

#endif

#ifdef WITH_DUMP

    //註冊異常捕獲函式
    SetUnhandledExceptionFilter((LPTOP_LEVEL_EXCEPTION_FILTER)ApplicationCrashHandler);

#endif