基础-01
基础-02
基础-03
创建多个窗口转换
大体预览
代码
untitled.pro
#-------------------------------------------------
#
# Project created by QtCreator 2019-10-30T12:23:54
#
#-------------------------------------------------
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
TARGET = untitled
TEMPLATE = app
SOURCES += main.cpp\
widget.cpp \
minwidget.cpp
HEADERS += widget.h \
minwidget.h
minwidget.h
#ifndef MINWIDGET_H
#define MINWIDGET_H
#include <QWidget>
#include<QPushButton>
class minwidget : public QWidget
{
Q_OBJECT
public:
explicit minwidget(QWidget *parent = 0);
~minwidget();
void SendSignals();
signals:
void mysignals(); //信号只需要声明不需要定义
public slots:
private:
QPushButton b;
};
#endif // MINWIDGET_H
widget.h
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
#include<QPushButton>
#include"minwidget.h"
class Widget : public QWidget
{
Q_OBJECT
public:
Widget(QWidget *parent = 0);
~Widget();
void OpenWindows();
void SignalsWork();
private:
QPushButton a;
minwidget minw;
};
#endif // WIDGET_H
main.cpp
#include "widget.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w;
w.resize(600,500);
w.show();
return a.exec();
}
minwidget.cpp
#include "minwidget.h"
minwidget::minwidget(QWidget *parent) : QWidget(parent)
{
b.setParent(this);
b.setText("第一个窗口");
b.resize(100,100);
b.move(230,200);
connect(&b,&QPushButton::clicked,this,&minwidget::SendSignals);
}
void minwidget::SendSignals()
{
emit mysignals(); //信号应用,需写上emit
}
minwidget::~minwidget()
{
}
widget.cpp
#include "widget.h"
Widget::Widget(QWidget *parent)
: QWidget(parent)
{
a.setParent(this);
a.setText("第二个窗口");
a.resize(100,100);
a.move(230,200);
connect(&a,&QPushButton::pressed,this,&Widget::OpenWindows);
minw.resize(600,500);
//处理minwidget的信号
connect(&minw,&minwidget::mysignals,this,&Widget::SignalsWork);
}
void Widget::OpenWindows()
{
this->hide();
minw.show();
}
void Widget::SignalsWork()
{
this->show();
minw.show();
}
Widget::~Widget()
{
}
End
~
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