qt小项目:表白窗口(窗口,信号与槽)
在小的时候,我们经常会看到程序员的表白链接或者表白软件,今天我们来用qt做一个简易版本,并复习一下窗口,信号与槽的操作
1.整体思路
在窗口中显示一个按钮,写着表白话语,然后两个按钮,yes和no,点no则该按钮就跑,点yes则出现约会话语,再点就关闭窗口
2.分布实现思路
表白按钮直接写,yes按钮要一个点击信号,槽的功能是出现约会话语按钮,no按钮则是根据随机数来改变按钮的位置
3.整体代码
可以给女朋友下一个qt creater然后复制过去,我的天好浪漫
pro
QT += core gui
QMAKE_PROJECT_DEPTH = 0
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++17
# You can make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp \
mainwindow.cpp
HEADERS += \
mainwindow.h
FORMS += \
mainwindow.ui
# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target
mainwindow.h
#ifndef MAINWINDOW_H
#define MAINWINDOW_H
#include <QMainWindow>
#include<QPushButton>
#include<ctime>
QT_BEGIN_NAMESPACE
namespace Ui {
class MainWindow;
}
QT_END_NAMESPACE
class MainWindow : public QMainWindow
{
Q_OBJECT
public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();
public slots:
void changeq1();
void changeq2();
private:
Ui::MainWindow *ui;
public:
QPushButton *q1;
QPushButton*q2;
};
#endif // MAINWINDOW_H
mainwindow.cpp
#include "mainwindow.h"
#include "ui_mainwindow.h"
MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
q1=new QPushButton("yes",this);
q1->setGeometry(300,200,50,50);
q2=new QPushButton("no",this);
q2->setGeometry(450,200,50,50);
std::srand(std::time(nullptr));
connect(q1, &QPushButton::clicked, this, &MainWindow::changeq1);
connect(q2, &QPushButton::clicked, this, &MainWindow::changeq2);
}
void MainWindow::changeq1()
{
QPushButton* q3=new QPushButton("have a dinner?",this);
q3->setGeometry(250,500,300,100);
q3->show();
connect(q3, &QPushButton::clicked, this, &MainWindow::close);
}
void MainWindow:: changeq2()
{
int x=std::rand()%100;
int y=std::rand()%100;
q2->setGeometry(x,y,50,50);
}
MainWindow::~MainWindow()
{
delete ui;
}
main.cpp
#include "mainwindow.h"
#include <QApplication>
#include<QObject>
#include<QPushButton>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
MainWindow w;
QPushButton *q=new QPushButton("do you love me?",&w);
q->setGeometry(300,300,200,100);
w.show();
return a.exec();
}