qlistwidget

Does anyone know if its possible to select multiple items on a QTreeWidget and how to go about enabling the multiple selection? All the items I want to be selectable are top level QTreeWidgetItems and all their children are set to be disabled (i.e QTreeWidgetItem.setDisabled(True) ) Mike Ramirez It is, you'll want to call setSelectionMode during init to enable QAbstractItemView::MultiSelection. QTreeView/QTreeWidget inherit QAbstractItemView, so it is available. Then to disable the items, just hook on to QTreeWidgets.itemSelectionChanged() signal. I think below will help: youQTreeWidget

How to remove selected items from qlistWidget . I have tried write the following code, but does not work. QList<QListWidgetItem*> items = ui->listWidget->selectedItems(); foreach(QListWidgetItem item, items){ ui->listWidget->removeItemWidget(item); } Now, how to remove the items that I selected from the qlistWidget ? One way to remove item from QListWidget is to use QListWidget::takeItem which removes and returns the item : QList<QListWidgetItem*> items = ui->listWidget->selectedItems(); foreach(QListWidgetItem * item, items) { delete ui->listWidget->takeItem(ui->listWidget->row(item)); }

第一步：重写类 MyListWidget 继承自 QListWidget 第二步：重写 mousePressEvent 函数 和 mouseMoveEvent 函数 void mousePressEvent(QMouseEvent* event); void mouseMoveEvent(QMouseEvent* event); MyListWidget.h 文件 #ifndef MYLISTWIDGET_H #define MYLISTWIDGET_H #include <QListWidget> // 包含所有用到的界面类 #include <QtGui> class MyListWidget : public QListWidget { Q_OBJECT public: MyListWidget(QWidget *parent); ~MyListWidget(); private: // 拖放起点 QPoint m_startPos; // 被拖放的item QListWidgetItem* m_sitem; void mousePressEvent(QMouseEvent* event); void mouseMoveEvent(QMouseEvent* event); }; #endif // MYLISTWIDGET_H MyListWidget.cpp 文件

Currently, I use the following while loop in a class that inherits QtGui.QListWidget to iterate all items: i = 0 while i < self.count(): item = self.item(i) i += 1 I was hoping I could use: for item in self.items(): but the items() method wants a QMimeData object which I don't know how to construct to return all items. Is there a cleaner approach than my while loop above? I don't know what's it with the MIME type either, and I couldn't find a convenience method either. But you could write a simple method like this and be done: def iterAllItems(self): for i in range(self.count()): yield self

1 ) QListWidget::QListWidget ( QWidget *parent = 0 ) // 构造一个父对象为parent的ListWidget。 2 ) void QListWidget::addItem ( const QString & label ) // 添加一个新的项目，在新添加的项目中添加label标签。 3 ) void QListWidget::addItem ( QListWidgetItem *item ) // 添加项目item。 4 ) void QListWidget::addItems ( const QStringList & labels ) // 添加一列项目。 5 ) void QListWidget::clear () 〔slot〕 // 清除该ListWidget中的所有项目。 6 ) QListWidgetItem *QListWidget::currentItem () const //返回当前活动项目。 7 ) void QListWidget::editItem ( QListWidgetItem *item ) //如果项目item是可编辑的，开始编辑项目item。 8 ) QList<QListWidgetItem *> QListWidget::findItems( constQString & text,

以下代码是 List Widget 添加数据项的代码，一般放在构造函数即可。 /*********************添加数据项*********************/ QIcon icon1("C:\\Users\\Administrator.USER-20190313RI\\Desktop\\img\\book.png"); QListWidgetItem* item = new QListWidgetItem(icon1, "book"); // 设置关联数据 item->setData(Qt::UserRole, 1); item->setData(Qt::ToolTipRole, "this is tooltip!"); ui.listWidget->addItem(item); QIcon icon2("C:\\Users\\Administrator.USER-20190313RI\\Desktop\\img\\heart.png"); ui.listWidget->addItem(new QListWidgetItem(icon2, "heart")); QIcon icon3("C:\\Users\\Administrator.USER-20190313RI\\Desktop\\img\\location.png"); ui.listWidget-