Question

我一直致力于一个包含多个游戏的项目。当用户选择其中一个游戏时，我遇到错误，应用程序崩溃。这仅在配置文件模式下发生我得到的错误来自microsoft visual C ++运行时库：

此应用程序已要求Runtime以异常终止方式...

从网上看，似乎我在做不正确的记忆管理，我似乎无法弄清问题在哪里。这是我的c ++源文件：

#include "sticks.h"
#include "ui_sticks.h"
Sticks::Sticks(QWidget *parent) :
    QMainWindow(parent),
    ui(new Ui::Sticks)
{
   ui->setupUi(this);
}

Sticks::~Sticks()
{
   delete ui;
}

int Sticks::selectUserChoice(int choice){
   ui->pushButton_select1->setEnabled(false);
   ui->pushButton_select2->setEnabled(false);
   ui->pushButton_select3->setEnabled(false);
   numsticks = numsticks - choice;
   //game_msg = "You grabbed " + QString::number(choice) + " sticks. There are " + QString::number(numsticks) + " sticks remaining";
   //setMessage(game_msg);
    computerChoice = getComputerChoice(numsticks);
    numsticks = numsticks - computerChoice;
   if (numsticks == 1)
       ui->pushButton_select1->setEnabled(true);
   if (numsticks == 2){
       ui->pushButton_select1->setEnabled(true);
       ui->pushButton_select2->setEnabled(true);
   }
   else{
       ui->pushButton_select1->setEnabled(true);
       ui->pushButton_select2->setEnabled(true);
       ui->pushButton_select3->setEnabled(true);
   }
}

   int Sticks::getComputerChoice(int current_sticks){
       /*Get a pseudo-random integer between 1 and 3 (inclusive)*/
       int choice = rand() % 3 + 1;

        if (current_sticks >=2 && current_sticks <=4){
            choice = current_sticks - 1;
    }
    else if (current_sticks == 1){
        return current_sticks;
    }
    return choice;
}

void Sticks::on_pushButton_select1_clicked()
{
selectUserChoice(1);
}

void Sticks::on_pushButton_select2_clicked()
{
   selectUserChoice(2);
}

void Sticks::on_pushButton_select3_clicked()
{
selectUserChoice(3);
}

void Sticks::on_pushButton_select_num_sticks_clicked()
{
    numsticks = ui->lineEdit_numsticks->text().toInt();
    if (numsticks < 10 || numsticks > 100) //Check that numsticks is 10-100
        return;
    std::ostringstream ss;
    ss << "There are " << numsticks << " sticks remaining";
    std::string str = ss.str();
    QString qstr = QString::fromStdString(str);
    ui->label_current_sticks->setText(qstr);
    //ui->horizontalLayout->removeWidget(ui->pushButton_select_num_sticks);
    delete ui->pushButton_select_num_sticks;
    delete ui->lineEdit_numsticks;
    ui->pushButton_select1->setEnabled(true);
    ui->pushButton_select2->setEnabled(true);
    ui->pushButton_select3->setEnabled(true);
    ui->label_grab->setEnabled(true);
}

void Sticks::setMessage(QString msg){
    /*
    prev_msg3 = ui->label_msg3->text();
    prev_msg2 = ui->label_msg2->text();
    prev_msg1 = ui->label_msg1->text();
    ui->label_msg4->setText(prev_msg3);
    ui->label_msg3->setText(prev_msg2);
    ui->label_msg2->setText(prev_msg1);
    ui->label_msg1->setText(msg);
    */
}

Answer 1

您的问题可能在以下两行：

delete ui->pushButton_select_num_sticks;
delete ui->lineEdit_numsticks;

您正在删除（我猜）您没有动态分配的内容。

小心这个析构函数：

Sticks::~Sticks()
{
   delete ui;
}

如果您复制Sticks个对象，您也将复制指针ui，因此您将多次删除相同的地址。

QT项目在配置文件上崩溃，与发布和调试器一起运行

1 个答案: