#include<iostream> using namespace std; int main(){ cout<<"hello world"<<endl; return 0; } 1. 2. 3. 4. 5. 6. 7. 8. 然后运行: g++ helloworld.cpp -o helloworld 1. 【如果想要输入参数,sh脚本中可以用“$1”"$2"占位】 注意:当“sleep 4秒”结束后窗口会退出 方法2:QProcess::star...
static inline typename std::enable_if<QtPrivate::FunctionPointer<Func2>::ArgumentCount == -1, QMetaObject::Connection>::type connect(const typename QtPrivate::FunctionPointer<Func1>::Object *sender, Func1 signal, Func2 slot) { return connect(sender, signal, sender, std::move(slot), Qt::...
#include <iostream> #include <iomanip> //包含控制符所在的头文件 using namespace std; int main( ) { double a=123.456,b=3.14159,c=-3214.67; cout<<setiosflags(ios::fixed) //设置浮点数以定点小数形式输出 <<setiosflags(ios::right) //设置数据在输出域右对齐 <<setprecision(2); //设置浮点数...
1: #include <QtCore/QCoreApplication> 2: #include <iostream> 3: #include <stdio.h> 4: using namespace std; 5: int main() 6: { 7: QString str2; 8: str2.sprintf("Ggicci is %d years old, and majors in %s.", 20, "Software Eng"); 9: cout << str2.toStdString() << ...
using namespace std; int main(int argc, char *argv[]) { char p[32] = SLOT(Object); cout << "cur_value: " << p << endl; Object obj1, obj2; //连接信号和槽 Object::cpp_connect(&obj1, SLOT(valueChanged), &obj2, SIGNAL(onValueChanged)); ...
using namespace std; int main(int argc,char **argv) { QCoreApplication app(argc,argv); QFile file("binary.file"); file.open(QIODevice::WriteOnly|QIODevice::Truncate); QDataStream out(&file); out< out< out<<(qint32)21;
using namespace std; class MutexWaitCondition { public: MutexWaitCondition(); public : //预计生产(或消费)数量 int loopCount; //当前产品数量 int product; //仓库能容纳最大产品数量 int capacity; QMutex mutex; //QWaitCondition类为线程同步提供了一个条件变量,此处设置条件 ...
(60000); // 1-minute timerusing namespace std::chrono;startTimer(milliseconds(50));startTimer(seconds(1));startTimer(minutes(1));// since C++14 we can use std::chrono::duration literals, e.g.:startTimer(100ms);startTimer(5s);startTimer(2min);startTimer(1h); }void MyObject::timerEvent(...
using namespace std; class A:public QWidget{public: bool event(QEvent* e); //事件处理方式1:重写虚函数QObject::event() void mousePressEvent(QMouseEvent* e); };//事件处理方式2:重写QWidget类中的此虚函数 bool A::event(QEvent* e){ static int i=0; //i用于计数 ...