我正在尝试制作一个 QTreeWidget ,使每一行都包含一系列组合框。根据用户与组合框的交互方式,我希望某些组合框成为行编辑,而一些组合框成为按钮。
这里有人建议QStackedWidget 可以满足我的需求,并且它做得很好,除了现在我需要一种方法来更改 QStackedWidget 旁边的 QStackedWidget 包含向我发送 indexChanged 信号的组合框的组合框。(基本上我想改变相邻的 QStackWidgets 索引)
我认为我可以使用 setData 将 QStackWidget 简单地存储在 childItem 中,然后在 indexChanged 插槽中检索它,但由于某种原因,QStackWidget 似乎没有设置为 childItems 数据。
任何帮助表示赞赏。
这是我最初设置 QTreeWidget 及其项目的地方
QTreeWidgetItem *childItem = new QTreeWidgetItem(itemParent);
QVariant itemParentVariant,widgetParentVarient;
widgetParentVarient.setValue(widgetParent);
itemParentVariant.setValue(itemParent);
QList<QVariant> stackWidgetList;
uint cycleSetup;
for(cycleSetup = 0;cycleSetup < methodBlocks.at(rowType).size()+2;cycleSetup++)
{
QComboBox *itemComboBox = new QComboBox;
itemComboBox->setProperty("rowType", rowType);
itemComboBox->setProperty("row", 0);
itemComboBox->setProperty("column",cycleSetup);
itemComboBox->setProperty("widgetParent",widgetParentVarient);
itemComboBox->setProperty("itemParent",itemParentVariant);
itemComboBox->addItems(methodBlocks.at(0).at(cycleSetup));
QObject::connect(itemComboBox, SIGNAL(currentIndexChanged(const QString&)), this, SLOT(OnComboIndexChanged(const QString&)));
QLineEdit *itemLineEdit = new QLineEdit;
QPushButton *itemButton = new QPushButton;
itemButton->setText("Reset");
QComboBox *timeComboBox = new QComboBox;
timeComboBox->setProperty("rowType", rowType);
timeComboBox->setProperty("row", 0);
timeComboBox->setProperty("column",cycleSetup);
timeComboBox->setProperty("widgetParent",widgetParentVarient);
timeComboBox->setProperty("itemParent",itemParentVariant);
timeComboBox->addItems(QString("Seconds;MilliSeconds;Reset").split(";"));
QStackedWidget *masterItemWidget = new QStackedWidget;
masterItemWidget->addWidget(itemLineEdit);
masterItemWidget->addWidget(itemComboBox);
masterItemWidget->addWidget(itemButton);
masterItemWidget->addWidget(timeComboBox);
masterItemWidget->setCurrentIndex(1);
QVariant stackParent;
stackParent.setValue(masterItemWidget);
itemComboBox->setProperty("stackParent",stackParent);
childItem->setData(0,Qt::UserRole,stackParent);
stackWidgetList.push_back(stackParent);
widgetParent->setItemWidget(childItem,cycleSetup,masterItemWidget);
itemParent->addChild(childItem);
}
这是在我试图检索数据的插槽内(QStackWidget)
QStackedWidget *itemMaster = combo->property("stackParent").value<QStackedWidget*>(); //this works
itemMaster->setCurrentIndex(0);
QTreeWidget *widgetParent = combo->property("widgetParent").value<QTreeWidget*>();
QTreeWidgetItem *parentItem = combo->property("itemParent").value<QTreeWidgetItem*>();
QTreeWidgetItem *childItem = new QTreeWidgetItem(parentItem);
QList<QVariant> stackList = childItem->data(0,Qt::UserRole).value<QList<QVariant>>(); //this doesnt
QStackedWidget *itemsibMaster = childItem->data(0,Qt::UserRole).value<QStackedWidget*>(); //neither does this
itemsibMaster->setCurrentIndex(2);
编辑:
我试图设置这样的数据
QFrame *stackFrame = new QFrame;
QStackedWidget *masterItemWidget = new QStackedWidget(stackFrame);
masterItemWidget->addWidget(itemLineEdit);
masterItemWidget->addWidget(itemComboBox);
masterItemWidget->addWidget(itemButton);
masterItemWidget->addWidget(timeComboBox);
masterItemWidget->setCurrentIndex(1);
QVariant stackParent;
stackParent.setValue(masterItemWidget);
itemComboBox->setProperty("stackParent",stackParent);
QVariant frameVariant;
frameVariant.setValue(stackFrame);
childItem->setData(0,Qt::UserRole,frameVariant);
stackWidgetList.push_back(stackParent);
widgetParent->setItemWidget(childItem,cycleSetup,masterItemWidget);
itemParent->addChild(childItem);
并像这样检索它
QStackedWidget *itemMaster = combo->property("stackParent").value<QStackedWidget*>();
itemMaster->setCurrentIndex(0);
QTreeWidget *widgetParent = combo->property("widgetParent").value<QTreeWidget*>();
QTreeWidgetItem *parentItem = combo->property("itemParent").value<QTreeWidgetItem*>();
QTreeWidgetItem *childItem = new QTreeWidgetItem(parentItem);
QFrame *frameObject = childItem->data(0,Qt::UserRole).value<QFrame*>();
//QList<QVariant> stackList = childItem->data(0,Qt::UserRole).value<QList<QVariant>>();
QStackedWidget *itemFrameMaster = frameObject->findChild<QStackedWidget*>();
if(itemFrameMaster)
{
qDebug() << "itemFrame Exists";
}
else
{
qDebug() << "itemFrame is NULL";//It goes to here
}
所以我仍然无法获得所需的功能。