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直接上程序
widget.h文件
#ifndef WIDGET_H
#define WIDGET_H
#include <QWidget>
#include <QLabel>
#include <QListWidget>
#include <QListWidgetItem>
#include <QDebug>
namespace Ui {
class Widget;
}
class Widget : public QWidget
{
Q_OBJECT
public:
explicit Widget(QWidget *parent = 0);
~Widget();
private:
Ui::Widget *ui;
QLabel *first,*second,*third;
QListWidget *listWidget;
QListWidgetItem *firstItem,*secondItem,*thirdItem;
public slots:
void ActiveComboboxSlot(int);
};
#endif // WIDGET_H
widget.cpp文件
#include "widget.h"
#include "ui_widget.h"
Widget::Widget(QWidget *parent) :
QWidget(parent),
ui(new Ui::Widget)
{
ui->setupUi(this);
first = new QLabel(this);
first->setText("first");
second = new QLabel(this);
second->setText("second");
third = new QLabel(this);
third->setText("third");
listWidget = new QListWidget(this);
ui->comboBox->setModel(listWidget->model());
ui->comboBox->setView(listWidget);
firstItem = new QListWidgetItem(listWidget);
secondItem = new QListWidgetItem(listWidget);
thirdItem = new QListWidgetItem(listWidget);
listWidget->setItemWidget(firstItem,first);
listWidget->setItemWidget(secondItem,second);
listWidget->setItemWidget(thirdItem,third);
connect(ui->comboBox,SIGNAL(activated(int)),this,SLOT(ActiveComboboxSlot(int)));
}
Widget::~Widget()
{
delete ui;
}
void Widget::ActiveComboboxSlot(int index)
{
qDebug()<<"actived:"<<ui->comboBox->currentIndex();
}
min.cpp
#include "widget.h"
#include <QApplication>
int main(int argc, char *argv[])
{
QApplication a(argc, argv);
Widget w;
w.show();
return a.exec();
}
结果是
会出点击combobox下拉项中任意其中一项没反应的情况 ,不是每次都没反应,时有时没有,不知道为什么会这样。
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