Disable Single Checkbox in QTreeWidgetItem

[deepal_de]

Hello,

Any one know a way to disable a single chekbox in Qtreewidget.
i Have list of QTreeWidgetItem*, all are in Qt::Unchecked state;
i need to disbale few chekbox's.
When i use QTreeWidgetItem::SetFlags(Qt::ItemIsEditable), checkbox's in complete row change to disable mode. :(
How can i disable only one chekbox in QTreeWidgetItem.

Thanks

[high_flyer]

When i use QTreeWidgetItem::SetFlags(Qt::ItemIsEditable), checkbox's in complete row change to disable mode.
Please post relevant code.

[deepal_de]

--------------------------------------------H---------------------------------------------------


#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>

namespace Ui {
class MainWindow;
}

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
explicit MainWindow(QWidget *parent = 0);
~MainWindow();
void initTree();

private:
Ui::MainWindow *ui;

private slots:

};

#endif // MAINWINDOW_H

------------------------------------CPP-----------------------------------------------------


#include "mainwindow.h"
#include "ui_mainwindow.h"
#include <QTreeWidget>
#include <QTreeWidgetItem>
#include "MyStyle.h"
#include <QMultiMap>

QTreeWidget* pTree;
QList<QTreeWidgetItem*> lstWidgets;
QList<QTreeWidgetItem*> lstSubItems;


MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow)
{
ui->setupUi(this);
pTree = NULL;
initTree();
QSize size(540,870);
this->resize(size);
this->setMinimumSize(size);
this->setMaximumSize(size);
ui->gridLayout->addWidget(pTree);
}

MainWindow::~MainWindow()
{
delete ui;
}

void MainWindow::initTree()
{
pTree = new QTreeWidget(this);
pTree->setGeometry(10,10,520,850);
pTree->setMaximumSize(520,850);
pTree->show();

QStringList lstheadrs;
lstheadrs.append(" \n \n \n \n \n \n ");
lstheadrs.append("1");
lstheadrs.append("2");
lstheadrs.append("3");
lstheadrs.append("4");
lstheadrs.append("5");
lstheadrs.append("6");
lstheadrs.append("7");
lstheadrs.append("8");
lstheadrs.append("9");
lstheadrs.append("10");
lstheadrs.append("11");
lstheadrs.append("12");
pTree->setHeaderLabels(lstheadrs);
//------SET COLUMN WIDTH---------------
pTree->setColumnWidth(0,190);
for(int i = 1; i<=12; i++)
{
pTree->setColumnWidth(i,25);
}
MyStyle *headerStyl = new MyStyle(this->style());
pTree->setStyle(headerStyl);

//================================================== ================================================== ======//
QTreeWidgetItem *Node1 = new QTreeWidgetItem(pTree, QStringList(QObject::tr("1")));
Node1->addChild(new QTreeWidgetItem(QStringList(QObject::tr("1.1"))));
Node1->addChild(new QTreeWidgetItem(QStringList(QObject::tr("1.2"))));
Node1->addChild(new QTreeWidgetItem(QStringList(QObject::tr("1.3"))));
pTree->expandItem(Node1);
for(int iChild=0; iChild<Node1->childCount() ; iChild++)
for(int i=1; i<lstheadrs.length(); i++)
Node1->child(iChild)->setCheckState(i,Qt::Unchecked);

lstWidgets.append(Node1);
//================================================== ================================================== ======//
QTreeWidgetItem *Node2 = new QTreeWidgetItem(pTree, QStringList(QObject::tr("2")));
Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.1"))));
Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.2"))));
Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.3"))));
Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.4"))));
Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.5"))));
Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.6"))));
Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.7"))));
Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.8"))));
Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.9"))));
Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.10"))));
pTree->expandItem(Node2);
for(int iChild=0; iChild<Node2->childCount() ; iChild++)
for(int i=1; i<lstheadrs.length(); i++)
Node2->child(iChild)->setCheckState(i,Qt::Unchecked);

lstWidgets.append(Node2);
//================================================== ================================================== ======//
QTreeWidgetItem *Node3 = new QTreeWidgetItem(pTree,QStringList(QObject::tr("3")));

QTreeWidgetItem *node3sub1 = new QTreeWidgetItem(Node3, QStringList(QObject::tr("3.1")));
node3sub1->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.1.1"))));
node3sub1->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.1.2"))));
node3sub1->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.1.3"))));
Node3->addChild(node3sub1);
for(int iChild=0; iChild<node3sub1->childCount(); iChild++)
for(int i=1; i<lstheadrs.length(); i++)
node3sub1->child(iChild)->setCheckState(i,Qt::Unchecked);

QTreeWidgetItem *node3sub2 = new QTreeWidgetItem(Node3, QStringList(QObject::tr("3.2")));
node3sub2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.2.1"))));
node3sub2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.2.2"))));
node3sub2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.2.3"))));
Node3->addChild(node3sub2);
for(int iChild=0; iChild<node3sub2->childCount(); ++iChild)
for(int i=1; i<lstheadrs.length(); i++)
node3sub2->child(iChild)->setCheckState(i,Qt::Unchecked);

QTreeWidgetItem *node3sub3 = new QTreeWidgetItem(Node3, QStringList(QObject::tr("3.3")));
node3sub3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.3.1"))));
node3sub3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.3.2"))));
node3sub3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.3.3"))));
Node3->addChild(node3sub3);
for(int iChild=0; iChild<node3sub3->childCount(); iChild++)
for(int i=1; i<lstheadrs.length(); i++)
node3sub3->child(iChild)->setCheckState(i,Qt::Unchecked);


Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.4"))));
Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.5"))));
Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.6"))));
Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.7"))));
Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.8"))));
Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.9"))));
Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.10"))));

pTree->expandItem(Node3);
for(int iChild=0; iChild<Node3->childCount() ; iChild++)
for(int i=1; i<lstheadrs.length(); i++)
Node3->child(iChild)->setCheckState(i,Qt::Unchecked);

lstWidgets.append(Node3);
lstWidgets.append(node3sub1);
lstWidgets.append(node3sub2);
lstWidgets.append(node3sub3);
//================================================== ================================================== ======//
QTreeWidgetItem *node4 = new QTreeWidgetItem(pTree, QStringList(QObject::tr("4")));
node4->addChild(new QTreeWidgetItem(QStringList(QObject::tr("4.1"))));
node4->addChild(new QTreeWidgetItem(QStringList(QObject::tr("4.2"))));
pTree->expandItem(node4);
for(int iChild=0; iChild<node4->childCount() ; iChild++)
for(int i=1; i<lstheadrs.length(); i++)
node4->child(iChild)->setCheckState(i,Qt::Unchecked);

lstWidgets.append(node4);
//================================================== ================================================== ======//
QTreeWidgetItem *node5 = new QTreeWidgetItem(pTree, QStringList(QObject::tr("5")));
node5->addChild(new QTreeWidgetItem(QStringList(QObject::tr("5.1"))));
node5->addChild(new QTreeWidgetItem(QStringList(QObject::tr("5.2"))));
node5->addChild(new QTreeWidgetItem(QStringList(QObject::tr("5.3"))));
node5->addChild(new QTreeWidgetItem(QStringList(QObject::tr("5.4"))));
pTree->expandItem(node5);
for(int iChild=0; iChild<node5->childCount() ; iChild++)
for(int i=1; i<lstheadrs.length(); i++)
node5->child(iChild)->setCheckState(i,Qt::Unchecked);

lstWidgets.append(node5);
}



This Code will generate a treeviwe, i need to disable only few checkboxes.
for example chekbox at index (1,3) (1,4),(1,5) (2,2),(2,5),(2,6) like vis.

But time to time the disable checkbox index may change,
disabled indexed previously will be active at the next viwe.
how can i contol this.

Note : lstWidgets has all the row items...

[high_flyer]

When i use QTreeWidgetItem::SetFlags(Qt::ItemIsEditable), checkbox's in complete row change to disable mode.
Where in the code you posted you call setFlags()?


This Code will generate a treeviwe, i need to disable only few checkboxes.
for example chekbox at index (1,3) (1,4),(1,5) (2,2),(2,5),(2,6) like vis.
So I take it that you know how to do this part?


But time to time the disable checkbox index may change,
disabled indexed previously will be active at the next viwe.
how can i contol this.
not sure what you mean, can you give a use case example?

[deepal_de]

Thanks for replying.



MainWindow::MainWindow(QWidget *parent) : QMainWindow(parent), ui(new Ui::MainWindow)
{
ui->setupUi(this);
pTree = NULL;
initTree();
QSize size(540,870);
this->resize(size);
this->setMinimumSize(size);
this->setMaximumSize(size);
ui->gridLayout->addWidget(pTree);

// Add this 3 lines to the code
////////////////////////////////////////////////////////////////////////////
Line 1)
lstWidgets.at(2)->child(5)->setCheckState(4,Qt::Checked);
Line 2)
lstWidgets.at(2)->child(4)->setFlags(Qt::ItemIsEditable);
Line 3)
// lstSubItems.at(5)->setFlags(Qt::ItemIsEditable);

//////////////////////////////////////////////////////////////////////////////
}


1)
after adding the (Line1) and running the program u will have Qtree with only one item in Qt::checked state.
what i wont to know is how to disable this checkbox so users cant change this.

when i try to use setFlags....
2)
after adding the (Line2) you will find that the full line at given index changes to disable state
3)
Line 3 Gives a runtime error

[MarekR22]

http://doc.trolltech.com/latest/qt.html#ItemFlag-enum
Qt::ItemIsEnabled

[ChristianSeverin]

http://doc.trolltech.com/latest/qt.html#ItemFlag-enum
Qt::ItemIsEnabled

If I understood the OP correctly, deepal_de only wants to disable the checkbox, not the whole item row.

[deepal_de]

Yes thats correct :)

[MarekR22]

Ok I should also give this link: QAbstractItemModel::flags (http://doc.qt.nokia.com/latest/qabstractitemmodel.html#flags). Check QStandardItem::setFlags (http://doc.qt.nokia.com/latest/qstandarditem.html#setFlags) if you use standard model (QStandardItemModel).
Just in case take a look also here:
QAbstractItemModel::data (http://doc.qt.nokia.com/latest/qabstractitemmodel.html#data) Qt::ItemDataRole-enum (http://doc.qt.nokia.com/latest/qt.html#ItemDataRole-enum) see Qt::CheckStateRole