How to Add a Button or other widget in QTreeWidget Header? - c++

Question

Can anyone give me a hint on how to place a button in the header of QTreeWidget
A minimal example is more than welcome?

Answer 1

For the person in the comments (and basically anyone else stopping by who might be helped by this), here is the translated python version of the code below:
from PySide2 import QtWidgets, QtCore
import sys
class Header(QtWidgets.QHeaderView):
def __init__(self, orientation, parent=None):
super(Header, self).__init__(orientation, parent)
self.button = QtWidgets.QPushButton('Button text', self)
class TreeWidget(QtWidgets.QTreeWidget):
def __init__(self, parent=None):
super(TreeWidget, self).__init__(parent)
item0 = QtWidgets.QTreeWidgetItem(["Item 0"])
item1 = QtWidgets.QTreeWidgetItem(["Item 1"])
self.addTopLevelItem(item0)
self.addTopLevelItem(item1)
self.createHeader()
def createHeader(self):
header = Header(QtCore.Qt.Horizontal, self)
self.setHeader(header)
if __name__ == '__main__':
app = QtWidgets.QApplication(sys.argv)
w = TreeWidget()
w.show()
sys.exit(app.exec_())
#QTreeWidget header is an "stand alone" widget - QHeaderView, so you can set the custom implementation of it.

Answer 2

#include <QTreeWidget>
#include <QTreeWidgetItem>
#include <QHeaderView>
#include <QPushButton>
class Header
: public QHeaderView
{
public:
Header(QWidget* parent)
: QHeaderView(Qt::Horizontal, parent)
, m_button(new QPushButton("Button", this))
{
}
private:
QPushButton* m_button;
};
class TreeWidget
: public QTreeWidget
{
Q_OBJECT
public:
TreeWidget()
: QTreeWidget(0)
{
QTreeWidgetItem* item0 = new QTreeWidgetItem(QStringList("Item 0"));
QTreeWidgetItem* item1 = new QTreeWidgetItem(QStringList("Item 1"));
addTopLevelItem(item0);
addTopLevelItem(item1);
createHeader();
}
private:
void createHeader()
{
m_header = new Header(this);
setHeader(m_header);
}
private:
Header* m_header;
};
int main(int c, char** v)
{
QApplication a(c, v);
TreeWidget* tw = new TreeWidget();
tw->show();
return a.exec();
}
//QTreeWidget header is an "stand alone" widget - QHeaderView, so you can set the custom implementation of it.