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Thread: Disable Single Checkbox in QTreeWidgetItem

  1. 27th April 2011, 07:15 #1
    deepal_de
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    Default Disable Single Checkbox in QTreeWidgetItem

    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
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  2. 28th April 2011, 11:07 #2
    high_flyer
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    Default Re: Disable Single Checkbox in QTreeWidgetItem

    When i use QTreeWidgetItem::SetFlags(Qt::ItemIsEditable), checkbox's in complete row change to disable mode.
    Please post relevant code.
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  3. 5th May 2011, 14:18 #3
    deepal_de
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    Exclamation Re: Disable Single Checkbox in QTreeWidgetItem

    --------------------------------------------H---------------------------------------------------
    Qt Code: 
    1. #ifndef MAINWINDOW_H
    2. #define MAINWINDOW_H
    3.  
    4. #include <QMainWindow>
    5.  
    6. namespace Ui {
    7.     class MainWindow;
    8. }
    9.  
    10. class MainWindow : public QMainWindow
    11. {
    12.     Q_OBJECT
    13.  
    14. public:
    15.     explicit MainWindow(QWidget *parent = 0);
    16.     ~MainWindow();
    17.     void initTree();
    18.  
    19. private:
    20.     Ui::MainWindow *ui;
    21.  
    22. private slots:
    23.  
    24. };
    25.  
    26. #endif // MAINWINDOW_H
    To copy to clipboard, switch view to plain text mode 
    ------------------------------------CPP-----------------------------------------------------
    Qt Code: 
    1. #include "mainwindow.h"
    2. #include "ui_mainwindow.h"
    3. #include <QTreeWidget>
    4. #include <QTreeWidgetItem>
    5. #include "MyStyle.h"
    6. #include <QMultiMap>
    7.  
    8. QTreeWidget* pTree;
    9. QList<QTreeWidgetItem*> lstWidgets;
    10. QList<QTreeWidgetItem*> lstSubItems;
    11.  
    12.  
    13. MainWindow::MainWindow(QWidget *parent) :    QMainWindow(parent),    ui(new Ui::MainWindow)
    14. {
    15.     ui->setupUi(this);
    16.     pTree = NULL;
    17.     initTree();
    18.     QSize size(540,870);
    19.     this->resize(size);
    20.     this->setMinimumSize(size);
    21.     this->setMaximumSize(size);
    22.     ui->gridLayout->addWidget(pTree);
    23. }
    24.  
    25. MainWindow::~MainWindow()
    26. {
    27.     delete ui;
    28. }
    29.  
    30. void MainWindow::initTree()
    31. {
    32.     pTree = new QTreeWidget(this);
    33.     pTree->setGeometry(10,10,520,850);
    34.     pTree->setMaximumSize(520,850);
    35.     pTree->show();
    36.  
    37.     QStringList lstheadrs;
    38.     lstheadrs.append(" \n \n \n \n \n \n ");
    39.     lstheadrs.append("1");
    40.     lstheadrs.append("2");
    41.     lstheadrs.append("3");
    42.     lstheadrs.append("4");
    43.     lstheadrs.append("5");
    44.     lstheadrs.append("6");
    45.     lstheadrs.append("7");
    46.     lstheadrs.append("8");
    47.     lstheadrs.append("9");
    48.     lstheadrs.append("10");
    49.     lstheadrs.append("11");
    50.     lstheadrs.append("12");
    51.     pTree->setHeaderLabels(lstheadrs);
    52.     //------SET COLUMN WIDTH---------------
    53.     pTree->setColumnWidth(0,190);
    54.     for(int i = 1; i<=12; i++)
    55.     {
    56.         pTree->setColumnWidth(i,25);
    57.     }
    58.     MyStyle *headerStyl = new MyStyle(this->style());
    59.     pTree->setStyle(headerStyl);
    60.  
    61.     //==========================================================================================================//
    62.     QTreeWidgetItem *Node1 =  new QTreeWidgetItem(pTree, QStringList(QObject::tr("1")));
    63.     Node1->addChild(new QTreeWidgetItem(QStringList(QObject::tr("1.1"))));
    64.     Node1->addChild(new QTreeWidgetItem(QStringList(QObject::tr("1.2"))));
    65.     Node1->addChild(new QTreeWidgetItem(QStringList(QObject::tr("1.3"))));
    66.     pTree->expandItem(Node1);
    67.     for(int iChild=0; iChild<Node1->childCount() ; iChild++)
    68.         for(int i=1; i<lstheadrs.length(); i++)
    69.             Node1->child(iChild)->setCheckState(i,Qt::Unchecked);
    70.  
    71.     lstWidgets.append(Node1);
    72.      //==========================================================================================================//
    73.     QTreeWidgetItem *Node2 =  new QTreeWidgetItem(pTree, QStringList(QObject::tr("2")));
    74.     Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.1"))));
    75.     Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.2"))));
    76.     Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.3"))));
    77.     Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.4"))));
    78.     Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.5"))));
    79.     Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.6"))));
    80.     Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.7"))));
    81.     Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.8"))));
    82.     Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.9"))));
    83.     Node2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("2.10"))));
    84.     pTree->expandItem(Node2);
    85.     for(int iChild=0; iChild<Node2->childCount() ; iChild++)
    86.         for(int i=1; i<lstheadrs.length(); i++)
    87.             Node2->child(iChild)->setCheckState(i,Qt::Unchecked);
    88.  
    89.      lstWidgets.append(Node2);
    90.      //==========================================================================================================//
    91.     QTreeWidgetItem *Node3 = new QTreeWidgetItem(pTree,QStringList(QObject::tr("3")));
    92.  
    93.     QTreeWidgetItem *node3sub1 = new QTreeWidgetItem(Node3, QStringList(QObject::tr("3.1")));
    94.     node3sub1->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.1.1"))));
    95.     node3sub1->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.1.2"))));
    96.     node3sub1->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.1.3"))));
    97.     Node3->addChild(node3sub1);
    98.     for(int iChild=0; iChild<node3sub1->childCount(); iChild++)
    99.         for(int i=1; i<lstheadrs.length(); i++)
    100.             node3sub1->child(iChild)->setCheckState(i,Qt::Unchecked);
    101.  
    102.     QTreeWidgetItem *node3sub2 = new QTreeWidgetItem(Node3, QStringList(QObject::tr("3.2")));
    103.     node3sub2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.2.1"))));
    104.     node3sub2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.2.2"))));
    105.     node3sub2->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.2.3"))));
    106.     Node3->addChild(node3sub2);
    107.     for(int iChild=0; iChild<node3sub2->childCount(); ++iChild)
    108.         for(int i=1; i<lstheadrs.length(); i++)
    109.             node3sub2->child(iChild)->setCheckState(i,Qt::Unchecked);
    110.  
    111.     QTreeWidgetItem *node3sub3 = new QTreeWidgetItem(Node3, QStringList(QObject::tr("3.3")));
    112.     node3sub3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.3.1"))));
    113.     node3sub3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.3.2"))));
    114.     node3sub3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.3.3"))));
    115.     Node3->addChild(node3sub3);
    116.     for(int iChild=0; iChild<node3sub3->childCount(); iChild++)
    117.         for(int i=1; i<lstheadrs.length(); i++)
    118.             node3sub3->child(iChild)->setCheckState(i,Qt::Unchecked);
    119.  
    120.  
    121.     Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.4"))));
    122.     Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.5"))));
    123.     Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.6"))));
    124.     Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.7"))));
    125.     Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.8"))));
    126.     Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.9"))));
    127.     Node3->addChild(new QTreeWidgetItem(QStringList(QObject::tr("3.10"))));
    128.  
    129.     pTree->expandItem(Node3);
    130.     for(int iChild=0; iChild<Node3->childCount() ; iChild++)
    131.         for(int i=1; i<lstheadrs.length(); i++)
    132.             Node3->child(iChild)->setCheckState(i,Qt::Unchecked);
    133.  
    134.     lstWidgets.append(Node3);
    135.     lstWidgets.append(node3sub1);
    136.     lstWidgets.append(node3sub2);
    137.     lstWidgets.append(node3sub3);
    138.      //==========================================================================================================//
    139.     QTreeWidgetItem *node4 = new QTreeWidgetItem(pTree, QStringList(QObject::tr("4")));
    140.     node4->addChild(new QTreeWidgetItem(QStringList(QObject::tr("4.1"))));
    141.     node4->addChild(new QTreeWidgetItem(QStringList(QObject::tr("4.2"))));
    142.     pTree->expandItem(node4);
    143.     for(int iChild=0; iChild<node4->childCount() ; iChild++)
    144.         for(int i=1; i<lstheadrs.length(); i++)
    145.             node4->child(iChild)->setCheckState(i,Qt::Unchecked);
    146.  
    147.     lstWidgets.append(node4);
    148.      //==========================================================================================================//
    149.     QTreeWidgetItem *node5 = new QTreeWidgetItem(pTree, QStringList(QObject::tr("5")));
    150.     node5->addChild(new QTreeWidgetItem(QStringList(QObject::tr("5.1"))));
    151.     node5->addChild(new QTreeWidgetItem(QStringList(QObject::tr("5.2"))));
    152.     node5->addChild(new QTreeWidgetItem(QStringList(QObject::tr("5.3"))));
    153.     node5->addChild(new QTreeWidgetItem(QStringList(QObject::tr("5.4"))));
    154.     pTree->expandItem(node5);
    155.     for(int iChild=0; iChild<node5->childCount() ; iChild++)
    156.         for(int i=1; i<lstheadrs.length(); i++)
    157.             node5->child(iChild)->setCheckState(i,Qt::Unchecked);
    158.  
    159.     lstWidgets.append(node5);
    160. }
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    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...
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  4. 5th May 2011, 15:18 #4
    high_flyer
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    Default Re: Disable Single Checkbox in QTreeWidgetItem

    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?
    ==========================signature=============== ==================
    S.O.L.I.D principles (use them!):
    https://en.wikipedia.org/wiki/SOLID_...iented_design)

    Do you write clean code? - if you are TDD'ing then maybe, if not, your not writing clean code.
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  5. 7th May 2011, 07:42 #5
    deepal_de
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    Default Re: Disable Single Checkbox in QTreeWidgetItem

    Thanks for replying.

    Qt Code: 
    1. MainWindow::MainWindow(QWidget *parent) :    QMainWindow(parent),    ui(new Ui::MainWindow)
    2. {
    3.     ui->setupUi(this);
    4.     pTree = NULL;
    5.     initTree();
    6.     QSize size(540,870);
    7.     this->resize(size);
    8.     this->setMinimumSize(size);
    9.     this->setMaximumSize(size);
    10.     ui->gridLayout->addWidget(pTree);
    11.  
    12. //  Add this 3 lines to the code
    13. ////////////////////////////////////////////////////////////////////////////
    14.  Line 1) 
    15.     lstWidgets.at(2)->child(5)->setCheckState(4,Qt::Checked);  
    16.  Line 2) 
    17.     lstWidgets.at(2)->child(4)->setFlags(Qt::ItemIsEditable);
    18.  Line 3) 
    19.  //   lstSubItems.at(5)->setFlags(Qt::ItemIsEditable);
    20.  
    21. //////////////////////////////////////////////////////////////////////////////
    22. }
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    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
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  6. 7th May 2011, 13:38 #6
    MarekR22
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    Default Re: Disable Single Checkbox in QTreeWidgetItem

    http://doc.trolltech.com/latest/qt.html#ItemFlag-enum
    Qt::ItemIsEnabled
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  7. 16th May 2011, 11:08 #7
    ChristianSeverin
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    Default Re: Disable Single Checkbox in QTreeWidgetItem

    Quote Originally Posted by MarekR22 View Post
    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.
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  8. The following user says thank you to ChristianSeverin for this useful post:

    deepal_de (25th May 2011)
  9. 25th May 2011, 09:09 #8
    deepal_de
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    Default Re: Disable Single Checkbox in QTreeWidgetItem

    Yes thats correct
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  10. 25th May 2011, 09:27 #9
    MarekR22
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    Default Re: Disable Single Checkbox in QTreeWidgetItem

    Ok I should also give this link: QAbstractItemModel::flags. Check QStandardItem::setFlags if you use standard model (QStandardItemModel).
    Just in case take a look also here:
    QAbstractItemModel::data Qt::ItemDataRole-enum see Qt::CheckStateRole
    Last edited by MarekR22; 25th May 2011 at 09:33.
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  11. The following user says thank you to MarekR22 for this useful post:

    deepal_de (26th May 2011)
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