QT窗体的切换

.h文件

#include<QWidget>

#include<QVBoxLayout>

#include<QHBoxLayout>

#include<QLabel>

classQQtieXiao:publicQWidget

{

Q_OBJECT

public:

 explicit QQtieXiao(QWidget*parent=0);

private:

 QWidget*widgetmain;

 QWidget*widgetfan;

signals:

public slots:

  voidgoTurn();

  voidgoReturn();

};

。cpp文件

#include"qqtiexiao.h"

#include<QPushButton>

#include<QLineEdit>

#include<QTextEdit>

QQtieXiao::QQtieXiao(QWidget*parent):

QWidget(parent)

{

this->setFixedSize(250,260);

this->setWindowFlags(Qt::FramelessWindowHint);//去掉window外框

widgetmain=newQWidget(this);

widgetmain->setFixedSize(250,260);

QVBoxLayout*layoutmain=newQVBoxLayout(widgetmain);

//layoutmain->setMargin(0);

QVBoxLayout*layouts=newQVBoxLayout;

layouts->setMargin(0);

QLabel*labels1=newQLabel(tr("-6C"));

labels1->setFixedHeight(60);

QLabel*labels2=newQLabel(tr("哈尔滨（当地）"));

labels2->setFixedHeight(30);

QLabel*labels3=newQLabel(tr("晴西北风"));

labels3->setFixedHeight(60);

layouts->addWidget(labels1);

layouts->addWidget(labels2);

layouts->addWidget(labels3);

QHBoxLayout*layoutz=newQHBoxLayout;

layoutz->setMargin(0);

QLabel*labelz1=newQLabel;

labelz1->setFixedHeight(80);

labelz1->setStyleSheet("background-color:red");

QLabel*labelz2=newQLabel;

labelz2->setFixedHeight(80);

labelz2->setStyleSheet("background-color:yellow");

QLabel*labelz3=newQLabel;

labelz3->setFixedHeight(80);

labelz3->setStyleSheet("background-color:black");

layoutz->addWidget(labelz1);

layoutz->addWidget(labelz2);

layoutz->addWidget(labelz3);

QHBoxLayout*layoutx=newQHBoxLayout;

layoutx->setMargin(0);

QLabel*labelx1=newQLabel(tr("黑龙江东北数字出版"));

labelx1->setFixedHeight(30);

layoutx->addWidget(labelx1);

layoutmain->addLayout(layouts);

layoutmain->addLayout(layoutz);

layoutmain->addLayout(layoutx);

widgetmain->setLayout(layoutmain);

QWidget*setwidght=newQWidget(widgetmain);

QPushButton*setbtn=newQPushButton(tr("曲"),setwidght);

connect(setbtn,SIGNAL(clicked()),this,SLOT(goTurn()));

setbtn->setFixedSize(20,20);

setwidght->setGeometry(220,10,20,20);

}

voidQQtieXiao::goTurn()

{

//这里写特效翻篇的过程

widgetmain->close();

widgetfan=newQWidget(this);

widgetfan->setFixedSize(250,260);

QVBoxLayout*layoutfanmain=newQVBoxLayout(widgetfan);

QLabel*labelf1=newQLabel(tr("设置"));

QLineEdit*leditf=newQLineEdit;

leditf->setFixedHeight(30);

QTextEdit*textedit=newQTextEdit;

textedit->setFixedHeight(70);

QPushButton*fbtn=newQPushButton(tr("完成"));

connect(fbtn,SIGNAL(clicked()),this,SLOT(goReturn()));

fbtn->setFixedSize(50,20);

layoutfanmain->addWidget(labelf1);

layoutfanmain->addWidget(leditf);

layoutfanmain->addWidget(textedit);

layoutfanmain->addWidget(fbtn);

widgetfan->setLayout(layoutfanmain);

widgetfan->show();

}

voidQQtieXiao::goReturn()

{

//这里写特效的返回窗体

widgetfan->close();

widgetmain->show();

}

说明：程序运行后后显示如下界面

但单击“曲”这个按钮时就会关闭当前这个窗体，切换到另一个窗体，切换后效果：

如果在去点击“完成”按钮时会又切换到上一窗体的。这样就实现了两个窗体之间的相互切换。