学习QT——GUI的基础用法(2)

１、listWidget列表

在构造函数里面添加：

     for (int i=; i<; i++)
     {
         ui->listWidget->addItem(QString::number(i)+"item here");
     }

在pushbutton里面添加

 void Dialog::on_pushButton_clicked()
 {
 //    QListWidgetItem *itm = ui->listWidget->currentItem();
 //    itm->setText("Fuzzy Bunny of doom");
 //    itm->setTextColor(Qt::red);
 //    itm->setBackgroundColor(Qt::black);

     ui->listWidget->currentItem()->setText("Fuzzy Bunny of doom");
     ui->listWidget->currentItem()->setTextColor(Qt::red);
     ui->listWidget->currentItem()->setBackgroundColor(Qt::black);
 }

２、QTreeWidget

现在dialog.h里面声明两个新的函数

 void AddRoot(QString name, QString Description);
 void AddChild(QTreeWidgetItem *parent, QString name, QString Description);

在在dialog.cpp里面实现这两个函数

 void Dialog::AddRoot(QString name, QString Description)
 {
     QTreeWidgetItem *itm = new QTreeWidgetItem(ui->treeWidget);
     itm->setText(,name);
     itm->setText(,Description);
     ui->treeWidget->addTopLevelItem(itm);

     AddChild(itm, "one", "hello");
     AddChild(itm, "two", "world");
 }

 void Dialog::AddChild(QTreeWidgetItem *parent, QString name, QString Description)
 {
     QTreeWidgetItem *itm = new QTreeWidgetItem();
     itm->setText(,name);
     itm->setText(,Description);
     parent->addChild(itm);
 }

在Dialog的构造函数中加入

     ui->treeWidget->setColumnCount();
     AddRoot("1 Hello","1 world");
     AddRoot("2 Hello","2 world");
     AddRoot("3 Hello","3 world");