tableWidget第一列嵌套treeWidget C++实现完整.h和.cpp
时间: 2024-03-21 22:40:26 浏览: 20
以下是一个简单的示例,展示了如何在QTableWidget的第一列中嵌套QTreeWidget:
tablewithtree.h:
```c++
#ifndef TABLEWITHTREE_H
#define TABLEWITHTREE_H
#include <QTableWidget>
#include <QTreeWidget>
#include <QTreeWidgetItem>
class TableWithTree : public QTableWidget
{
Q_OBJECT
public:
TableWithTree(QWidget *parent = nullptr);
private:
QTreeWidget *treeWidget;
QTreeWidgetItem *treeWidgetItem;
private slots:
void onCurrentCellChanged(int currentRow, int currentColumn, int previousRow, int previousColumn);
};
#endif // TABLEWITHTREE_H
```
tablewithtree.cpp:
```c++
#include "tablewithtree.h"
TableWithTree::TableWithTree(QWidget *parent)
: QTableWidget(parent)
{
//创建表格
setRowCount(5);
setColumnCount(2);
setHorizontalHeaderLabels(QStringList() << "Column 1" << "Column 2");
//在第一列中创建一个QTreeWidget
treeWidget = new QTreeWidget(this);
setCellWidget(0, 0, treeWidget);
//在QTreeWidget中添加一些QTreeWidgetItem
treeWidgetItem = new QTreeWidgetItem(treeWidget, QStringList() << "Item 1");
new QTreeWidgetItem(treeWidgetItem, QStringList() << "Subitem 1");
new QTreeWidgetItem(treeWidgetItem, QStringList() << "Subitem 2");
treeWidgetItem = new QTreeWidgetItem(treeWidget, QStringList() << "Item 2");
new QTreeWidgetItem(treeWidgetItem, QStringList() << "Subitem 3");
new QTreeWidgetItem(treeWidgetItem, QStringList() << "Subitem 4");
//连接信号和槽函数
connect(this, SIGNAL(currentCellChanged(int,int,int,int)), this, SLOT(onCurrentCellChanged(int,int,int,int)));
}
void TableWithTree::onCurrentCellChanged(int currentRow, int currentColumn, int previousRow, int previousColumn)
{
//如果当前选中的单元格不是第一列,则返回
if (currentColumn != 0) {
return;
}
//展开或收起QTreeWidget中的项目
if (treeWidget->isItemExpanded(treeWidgetItem)) {
treeWidget->collapseItem(treeWidgetItem);
} else {
treeWidget->expandItem(treeWidgetItem);
}
}
```
这个示例中,我们首先在构造函数中创建了一个QTableWidget,并设置了它的行列数和水平表头标签。然后,我们创建了一个QTreeWidget,并将它设置为QTableWidget的第一列单元格的窗口部件。
接下来,我们在QTreeWidget中添加了一些QTreeWidgetItem,以模拟树形项目结构。
最后,我们连接了QTableWidget的currentCellChanged信号和onCurrentCellChanged槽函数,以便当用户选择第一列中的单元格时,展开或收起QTreeWidget中的项目。