捕获Qt Crash全图教程

关键点

在main.cpp引入SetUnhandledExceptionFilter程序奔溃时生成dmp文件（代码）
Build release时包含debug信息(图)
Link dbghelp.lib库(图)
Build post自动复制qt依赖库(图)

Qt捕获Crash示例代码下载

Qt捕获Crash关键代码

main.cpp

#include <QtWidgets/QApplication>
#include <QMessageBox>
#include <QDateTime>
#include <QDir>
#include <QDebug>
#include "QtCrashApplication.h"
#include "main.h"

#ifdef Q_OS_WIN
#include <Windows.h>
#include <DbgHelp.h>
#endif

#ifdef Q_OS_WIN
static LONG WINAPI exceptionCallback(struct _EXCEPTION_POINTERS* exceptionInfo)
{
    QCoreApplication* app = QApplication::instance();

    QString savePath = app->applicationDirPath() + "dump/";
    qDebug() << "save path :" << savePath;
    QDir dir(savePath);
    if (!dir.exists() && !dir.mkpath(savePath)) {
        app->exit(E_UNEXPECTED);
        return EXCEPTION_EXECUTE_HANDLER;
    }

    savePath.append("assit_");
    savePath.append(QDateTime::currentDateTime().toString("yyyyMMddhhmmsszzz"));
    savePath.append(".dmp");

    HANDLE dump = CreateFileW(savePath.toStdWString().c_str(), GENERIC_WRITE,
        0, NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
    if (INVALID_HANDLE_VALUE == dump) {
        app->exit(E_UNEXPECTED);
        return EXCEPTION_EXECUTE_HANDLER;
    }

    MINIDUMP_EXCEPTION_INFORMATION miniDumpExceptionInfo;
    miniDumpExceptionInfo.ExceptionPointers = exceptionInfo;
    miniDumpExceptionInfo.ThreadId = GetCurrentThreadId();
    miniDumpExceptionInfo.ClientPointers = TRUE;
    DWORD idProcess = GetCurrentProcessId();
    MiniDumpWriteDump(GetCurrentProcess(), idProcess, dump,
        MiniDumpNormal, &miniDumpExceptionInfo, NULL, NULL);

    CloseHandle(dump);

    app->exit(E_UNEXPECTED);
    return EXCEPTION_EXECUTE_HANDLER;
}
#endif

int main(int argc, char* argv[])
{
    QApplication a(argc, argv);

#ifdef Q_OS_WIN
    SetUnhandledExceptionFilter(exceptionCallback);
#endif

    QtCrashApplication w;
    w.show();
    return a.exec();
}

QtCrashApplication.cpp

#include "QtCrashApplication.h"

QtCrashApplication::QtCrashApplication(QWidget *parent)
    : QMainWindow(parent)
{
    ui.setupUi(this);
    QObject::connect(ui.CrashButton, SIGNAL(clicked()), this, SLOT(crashMe()));
}

void QtCrashApplication::crashMe() {
    int i = 0;
    int n = 1 / i;
    ui.CrashButton->setText(QString(n));
}

新建项目

配置项目

项目配置向导

项目配置向导2

编写会奔溃程序

程序运行截图

点击运行后出现异常

自动生成依赖qt库

"$(QTDIR)\bin\windeployqt.exe" "$(OutDir.TrimEnd('\'))" --$(Configuration.toLower())

自动生成依赖库

生成release时生成debug信息

包含dbghelp.lib库

查看生成记录

查看结果

参考