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头文件

stack.h

#ifndef STACK_H #define STACK_H #include <QDialog> #include <QObject> class QLabel; class QListWidget; class QStackedWidget; class StackDlg:public QDialog{ Q_OBJECT public: StackDlg(QWidget *parent=0); QLabel *label1; QLabel *label2; QLabel *label3; QListWidget *<a class="tags" href="/tags/LIST.html" title=list>list</a>; QStackedWidget *stack; }; #endif // STACK_H

 

实现代码

main.cpp

#include <QApplication> #include <QStackedWidget> #include <QListWidget> #include <QHBoxLayout> #include <QLabel> #include "stack.h" StackDlg::StackDlg(QWidget *parent):QDialog(parent){ setWindowTitle(tr("Stacked Widget")); //创建ComboBox 并插入三个选项 <a class="tags" href="/tags/LIST.html" title=list>list</a>=new QListWidget(this); <a class="tags" href="/tags/LIST.html" title=list>list</a>->insertItem(0,tr("window 0")); <a class="tags" href="/tags/LIST.html" title=list>list</a>->insertItem(1,tr("window 1")); <a class="tags" href="/tags/LIST.html" title=list>list</a>->insertItem(2,tr("window 3")); //创建堆栈窗口显示的三层窗体 label1=new QLabel(this); label1->setText("this is label1"); label2=new QLabel(this); label2->setText("this is label2"); label3=new QLabel(this); label3->setText("this is label3"); //创建一个 堆栈窗体 stack=new QStackedWidget(this); //将LABEL窗体添加到 堆栈窗体 stack->addWidget(label1); stack->addWidget(label2); stack->addWidget(label3); //布局管理 QHBoxLayout *<a class="tags" href="/tags/LAYOUT.html" title=layout>layout</a>=new QHBoxLayout(); <a class="tags" href="/tags/LAYOUT.html" title=layout>layout</a>->addWidget(<a class="tags" href="/tags/LIST.html" title=list>list</a>); //添加<a class="tags" href="/tags/LIST.html" title=list>list</a> <a class="tags" href="/tags/LAYOUT.html" title=layout>layout</a>->addWidget(stack); //添加stack <a class="tags" href="/tags/LAYOUT.html" title=layout>layout</a>->setStretchFactor(<a class="tags" href="/tags/LIST.html" title=list>list</a>,1);//设置 <a class="tags" href="/tags/LIST.html" title=list>list</a>所占的位置 <a class="tags" href="/tags/LAYOUT.html" title=layout>layout</a>->setStretchFactor(stack,3);//设置 stack所占的位置 <a class="tags" href="/tags/LAYOUT.html" title=layout>layout</a>->setMargin(5); <a class="tags" href="/tags/LAYOUT.html" title=layout>layout</a>->setSpacing(10); //将ComboBox 变化信号 关联到 堆栈窗体槽 connect(<a class="tags" href="/tags/LIST.html" title=list>list</a>,SIGNAL(currentRowChanged(int)),stack,SLOT(setCurrentIndex(int))); setLayout(<a class="tags" href="/tags/LAYOUT.html" title=layout>layout</a>); } int main(int argc,char ** argv){ QApplication app(argc,argv); StackDlg dlg; dlg.show(); return app.exec(); }

 

 

效果图