ui(new Ui::MainWindow) { ui->setupUi(this); this->move(700, 240); this->setWindowTitle("super 聊天软件"); }
时间: 2024-03-31 11:33:15 浏览: 20
这段代码是用来设置聊天软件界面的位置和标题的。其中,ui->setupUi(this)是用来初始化界面的,this->move(700, 240)是将软件窗口移动到(700, 240)的位置,this->setWindowTitle("super 聊天软件")是设置软件窗口的标题为"super 聊天软件"。
相关问题
使用Qt编程。界⾯上有⼀个⽂本显示框 QLabel,计算 2 到 50 的斐波那契数列结果,每次计算完成后,将计算结果显示在 QLabel上。 要求: 计算过程中界⾯不能卡顿; 程序关闭时⽴即退出,并且不会出现崩溃; 分别使⽤QThread和moveToThread两种⽅式实现。
使用QThread实现:
```cpp
// fibthread.h
#ifndef FIBTHREAD_H
#define FIBTHREAD_H
#include <QThread>
class FibThread : public QThread {
Q_OBJECT
public:
explicit FibThread(QObject *parent = nullptr);
signals:
void result(int);
protected:
void run() override;
};
#endif // FIBTHREAD_H
// fibthread.cpp
#include "fibthread.h"
FibThread::FibThread(QObject *parent) : QThread(parent) {}
void FibThread::run() {
int fib1 = 0, fib2 = 1;
for (int i = 2; i <= 50; ++i) {
int fib = fib1 + fib2;
fib1 = fib2;
fib2 = fib;
emit result(fib);
}
}
// mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QThread>
namespace Ui {
class MainWindow;
}
class FibThread;
class MainWindow : public QMainWindow {
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = nullptr);
~MainWindow();
private slots:
void onCalculateFinished(int fib);
private:
Ui::MainWindow *ui;
FibThread *fibThread;
};
#endif // MAINWINDOW_H
// mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "fibthread.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow),
fibThread(new FibThread(this))
{
ui->setupUi(this);
connect(fibThread, &FibThread::result, this, &MainWindow::onCalculateFinished);
fibThread->start();
}
MainWindow::~MainWindow()
{
delete ui;
fibThread->quit();
fibThread->wait();
}
void MainWindow::onCalculateFinished(int fib) {
ui->label->setText(QString::number(fib));
}
```
使用moveToThread实现:
```cpp
// fibworker.h
#ifndef FIBWORKER_H
#define FIBWORKER_H
#include <QObject>
#include <QThread>
class FibWorker : public QObject {
Q_OBJECT
public:
explicit FibWorker(QObject *parent = nullptr);
public slots:
void calculate();
signals:
void result(int);
};
#endif // FIBWORKER_H
// fibworker.cpp
#include "fibworker.h"
FibWorker::FibWorker(QObject *parent) : QObject(parent) {}
void FibWorker::calculate() {
int fib1 = 0, fib2 = 1;
for (int i = 2; i <= 50; ++i) {
int fib = fib1 + fib2;
fib1 = fib2;
fib2 = fib;
emit result(fib);
}
}
// mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QThread>
namespace Ui {
class MainWindow;
}
class FibWorker;
class MainWindow : public QMainWindow {
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = nullptr);
~MainWindow();
private slots:
void onCalculateFinished(int fib);
private:
Ui::MainWindow *ui;
QThread *workerThread;
FibWorker *fibWorker;
};
#endif // MAINWINDOW_H
// mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "fibworker.h"
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow),
workerThread(new QThread(this)),
fibWorker(new FibWorker)
{
ui->setupUi(this);
fibWorker->moveToThread(workerThread);
connect(workerThread, &QThread::finished, fibWorker, &QObject::deleteLater);
connect(this, &MainWindow::destroyed, workerThread, &QThread::quit);
connect(fibWorker, &FibWorker::result, this, &MainWindow::onCalculateFinished);
connect(this, &MainWindow::destroyed, fibWorker, &FibWorker::deleteLater);
workerThread->start();
QMetaObject::invokeMethod(fibWorker, "calculate", Qt::QueuedConnection);
}
MainWindow::~MainWindow()
{
delete ui;
workerThread->quit();
workerThread->wait();
}
void MainWindow::onCalculateFinished(int fib) {
ui->label->setText(QString::number(fib));
}
```
linux和Qt打地鼠代码
以下是在 Linux 和 Qt 中实现的简单打地鼠游戏代码,你可以参考:
mainwindow.h 文件:
```
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include <QTimer>
namespace Ui {
class MainWindow;
}
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
private:
Ui::MainWindow *ui;
QTimer *timer;
int score;
private slots:
void showMole();
void hitMole();
};
#endif // MAINWINDOW_H
```
mainwindow.cpp 文件:
```
#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QLabel>
#include <QPixmap>
#include <QRandomGenerator>
MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow),
score(0)
{
ui->setupUi(this);
timer = new QTimer(this);
connect(timer, SIGNAL(timeout()), this, SLOT(showMole()));
connect(ui->label, SIGNAL(clicked()), this, SLOT(hitMole()));
}
MainWindow::~MainWindow()
{
delete ui;
}
void MainWindow::showMole()
{
int x = QRandomGenerator::global()->bounded(300);
int y = QRandomGenerator::global()->bounded(200);
ui->label->move(x, y);
ui->label->setPixmap(QPixmap(":/images/mole.png"));
ui->label->show();
timer->start(1000);
}
void MainWindow::hitMole()
{
if (ui->label->pixmap() != nullptr) {
score++;
ui->label->setPixmap(QPixmap(":/images/hit.png"));
QTimer::singleShot(500, ui->label, [=](){
ui->label->setPixmap(QPixmap());
});
}
ui->lcdNumber->display(score);
}
```
在上面的代码中:
- 在 showMole() 函数中,通过 QRandomGenerator::global() 随机生成地鼠出现的位置,并设置 ui->label 的位置和显示地鼠图片,定时器 timer 每隔一定时间启动一次 showMole() 函数。
- 在 hitMole() 函数中,判断点击的位置和地鼠位置是否重叠,如果重叠则得分加 1,同时设置 ui->label 显示被打中的图片,通过定时器 QTimer::singleShot() 实现打中地鼠后地鼠消失的动画效果。
在项目中,还需要添加地鼠图片和被打中的图片(命名为 mole.png 和 hit.png),并在 .qrc 文件中添加资源。
最后,编译运行程序即可实现简单的打地鼠游戏。