Qt程序捕捉异常，产生dump文件

       程序难免会出现异常崩溃，这时我们不仅要实时记录数据，以防止出现异常崩溃，而且还要能够捕捉所发生的异常。

      捕捉异常时会产生dump文件，以备对异常调试的可查；还要添加头文件和库文件。

   #include <Windows.h>

  #include "DbgHelp.h"

  LIBS += -ldbghelp

  在main函数中调用回调函数 SetUnhandledExceptionFilter((LPTOP_LEVEL_EXCEPTION_FILTER)ApplicationCrashHandler);

static LONG ApplicationCrashHandler(EXCEPTION_POINTERS *pException)
{
    //And output crash information
    EXCEPTION_RECORD *record = pException->ExceptionRecord;
    QString errCode(QString::number(record->ExceptionCode, 16));
    QString errAddr(QString::number((uint)record->ExceptionAddress, 16));
    QString errFlag(QString::number(record->ExceptionFlags, 16));
    QString errPara(QString::number(record->NumberParameters, 16));
    qDebug()<<"errCode: "<<errCode;
    qDebug()<<"errAddr: "<<errAddr;
    qDebug()<<"errFlag: "<<errFlag;
    qDebug()<<"errPara: "<<errPara;
    //Create the dump file
    HANDLE hDumpFile = CreateFile((LPCWSTR)QString("../bin_vs/crash.dmp").utf16(),
             GENERIC_WRITE, 0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
    if(hDumpFile != INVALID_HANDLE_VALUE) {
        MINIDUMP_EXCEPTION_INFORMATION dumpInfo;
        dumpInfo.ExceptionPointers = pException;
        dumpInfo.ThreadId = GetCurrentThreadId();
        dumpInfo.ClientPointers = TRUE;
        MiniDumpWriteDump(GetCurrentProcess(), GetCurrentProcessId(),hDumpFile, MiniDumpNormal, &dumpInfo, NULL, NULL);
        CloseHandle(hDumpFile);
    }
    return EXCEPTION_EXECUTE_HANDLER;
}