qt-C++笔记之两个窗口ui的交互
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文章目录
qt-C++笔记之两个窗口ui的交互0.运行1.文件结构2.先创建widget项目，搞一个窗口ui出来3.项目添加第二个widget窗口出来4.补充代码4.1.qt_widget_interaction.pro4.2.main.cpp4.3.widget.h4.4.widget.cpp4.5.second_widget.h4.6.second_widget.cpp4.7.widget.ui4.8.second_widget.ui
0.运行
1.文件结构
2.先创建widget项目，搞一个窗口ui出来
3.项目添加第二个widget窗口出来
4.补充代码
4.1.qt_widget_interaction.pro
代码
QT += core gui
greaterThan(QT_MAJOR_VERSION, 4): QT += widgets
CONFIG += c++11
# The following define makes your compiler emit warnings if you use
# any Qt feature that has been marked deprecated (the exact warnings
# depend on your compiler). Please consult the documentation of the
# deprecated API in order to know how to port your code away from it.
DEFINES += QT_DEPRECATED_WARNINGS
# You can also make your code fail to compile if it uses deprecated APIs.
# In order to do so, uncomment the following line.
# You can also select to disable deprecated APIs only up to a certain version of Qt.
#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000 # disables all the APIs deprecated before Qt 6.0.0
SOURCES += \
main.cpp \
second_widget.cpp \
widget.cpp
HEADERS += \
second_widget.h \
widget.h
FORMS += \
second_widget.ui \
widget.ui
# Default rules for deployment.
qnx: target.path = /tmp/$${TARGET}/bin
else: unix:!android: target.path = /opt/$${TARGET}/bin
!isEmpty(target.path): INSTALLS += target
4.2.main.cpp
代码
#include "widget.h"
#include
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w;
w.show();
return a.exec();
}
4.3.widget.h
代码
#ifndef WIDGET_H
#define WIDGET_H
#include
#include
QT_BEGIN_NAMESPACE
namespace Ui { class Widget; }
QT_END_NAMESPACE
class Widget : public QWidget
{
Q_OBJECT
public:
Widget(QWidget *parent = nullptr);
~Widget();
private slots:
void on_push_second_widget_clicked();
void show_widget();
private:
Ui::Widget *ui;
};
#endif // WIDGET_H
4.4.widget.cpp
代码
#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent)
: QWidget(parent)
, ui(new Ui::Widget)
{
ui->setupUi(this);
}
Widget::~Widget()
{
delete ui;
}
void Widget::show_widget()
{
this->show();
}
void Widget::on_push_second_widget_clicked()
{
second_widget* f = new second_widget;
f->show();
this->hide();
connect(f,SIGNAL(close_and_open()),this,SLOT(show_widget()));
}
4.5.second_widget.h
代码
#ifndef SECOND_WIDGET_H
#define SECOND_WIDGET_H
#include
namespace Ui {
class second_widget;
}
class second_widget : public QWidget
{
Q_OBJECT
public:
explicit second_widget(QWidget *parent = nullptr);
~second_widget();
private slots:
void on_pushButton_clicked();
signals:
void close_and_open();
private:
Ui::second_widget *ui;
};
#endif // SECOND_WIDGET_H
4.6.second_widget.cpp
代码
#include "second_widget.h"
#include "ui_second_widget.h"
second_widget::second_widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::second_widget)
{
ui->setupUi(this);
}
second_widget::~second_widget()
{
delete ui;
}
void second_widget::on_pushButton_clicked()
{
emit close_and_open();
this->hide();
}
4.7.widget.ui
代码
4.8.second_widget.ui
代码
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