重要函数:
1.void setCurrentIndex(int); //用下标显示当前页,.从0开始.
2.int count(); //返回页面的数量.
3.void insertWidget(int, QWidget*); //在下标为参数位置插入页.
4.void addWidget(QWidget*); //加上页.
5.void removeWidget(QWidget*); //删除页.
信号:
1.void currentChanged(int); //当前页面发生改变时，发出信号.
2.void widgetRemoved(int); //页面被删除时，发出信号.
首先我们添加一个类，名字自定义，我这里叫MyPicture.不用Qt设计师进行拖拽，而是进行手工布局，因为当部件的量很多或者需要自动生成的时候，手工布局显得更加灵活.
以下是”MyPicture.cpp”下的代码:
计算
安全
数据库
网络和加速
企业服务
#include "MyPicture.h"MyPicture::MyPicture(QWidget *parent)
: QWidget(parent)
{
ui.setupUi(this); //创建一个垂直布局.
QVBoxLayout *vertLayout = new QVBoxLayout; for (int i = 0; i < 5; ++i)
{ //创建一个水平布局.
QHBoxLayout *horiLayout = new QHBoxLayout; for (int j = 0; j < 5; ++j)
{
QLabel *temp = new QLabel("z");
temp->resize(100,100); //也添加到vector容器里去，方便调用.
this->labelArray.push_back(temp); //把label对象添加到水平布局中去.
horiLayout->addWidget(temp);
} //布局中可以添加布局.
vertLayout->addLayout(horiLayout);
} //最后应用垂直布局.
this->setLayout(vertLayout);
}
MyPicture::~MyPicture()
{
}void MyPicture::setText(QString str)
{ for (int i = 0; i < 25; ++i)
{ this->labelArray[i]->setText(str);
}
}12345678910111213141516171819202122232425262728293031323334353637383940以下是”MyPicture.h”的代码:
#ifndef MYPICTURE_H#define MYPICTURE_H#include <QWidget>#include "ui_MyPicture.h"#include <QMessageBox>#include <QLabel>#include <QVBoxLayout>#include <QHBoxLayout>class MyPicture : public QWidget{
Q_OBJECTpublic:
MyPicture(QWidget *parent = 0);
~MyPicture(); void setText(QString);private:
Ui::MyPicture ui;
QVector<QLabel*> labelArray;
};#endif // MYPICTURE_H1234567891011121314151617181920212223242526然后在c.ui处，进行拖拽，进行如下布局和命名.
然后是”c.cpp”的代码:
#include "c.h"c::c(QWidget *parent)
: QMainWindow(parent)
{
ui.setupUi(this);
initStackedWidget(); //连接信号与槽.
connect(ui.firstButton, SIGNAL(clicked()), this, SLOT(showFirstPageSlot()));
connect(ui.secondButton, SIGNAL(clicked()), this, SLOT(showSecondPageSlot()));
}
c::~c()
{
}void c::showFirstPageSlot()
{ //设置当前显示的页面
ui.stackedWidget->setCurrentIndex(0);
}void c::showSecondPageSlot()
{
ui.stackedWidget->setCurrentIndex(1);
}//初始化堆积页.void c::initStackedWidget()
{ //先删除系统自动为你添加的两个页面.
ui.stackedWidget->removeWidget(ui.page);
ui.stackedWidget->removeWidget(ui.page_2);
MyPicture *temp = new MyPicture;
temp->setText(QString::fromLocal8Bit("哈哈"));
ui.stackedWidget->addWidget(temp);
MyPicture *i = new MyPicture;
i->setText(QString::fromLocal8Bit("嘻嘻"));
ui.stackedWidget->addWidget(i);
}123456789101112131415161718192021222324252627282930313233343536373839404142“c.h”的代码:
#ifndef C_H#define C_H#include <QtWidgets/QMainWindow>#include "ui_c.h"#include <QStackedWidget>#include <QPushButton>#include <QMessageBox>#include "MyPicture.h"class c : public QMainWindow{
Q_OBJECTpublic:
c(QWidget *parent = 0);
~c(); //初始化堆积页.
void initStackedWidget();private slots: void showSecondPageSlot(); void showFirstPageSlot();private:
Ui::cClass ui;
};#endif // C_H12345678910111213141516171819202122232425262728293031最后是”main.cpp”的代码:
#include "c.h"#include <QtWidgets/QApplication>#include "MyPicture.h"int main(int argc, char *argv[])
{
QApplication a(argc, argv); /*c w;
w.show();*/
MyPicture w;
w.show(); return a.exec();
}亿速云「云服务器」，即开即用、新一代英特尔至强铂金CPU、三副本存储NVMe SSD云盘，价格低至29元/月。点击查看>>
免责声明：本站发布的内容（图片、视频和文字）以原创、转载和分享为主，文章观点不代表本网站立场，如果涉及侵权请联系站长邮箱：is@yisu.com进行举报，并提供相关证据，一经查实，将立刻删除涉嫌侵权内容。
