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Thread: QTreeWidget Horizontal header double click event???

  1. 3rd June 2011, 10:08 #1
    deepal_de
    deepal_de is offline Intermediate user
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    Default QTreeWidget Horizontal header double click event???

    Hello,

    any1 know how to catch "QTreeWidget Horizontal header double click event"?
    this is my QtreeWidget, what i wont is when i double click on horizontal header item, Tree should check all the item in that selected column ..
    any ideas ??

    .H fie
    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
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    .CPP file
    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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  2. 3rd June 2011, 18:00 #2
    deepal_de
    deepal_de is offline Intermediate user
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    Default Re: QTreeWidget Horizontal header double click event???

    hope this does not mean that there is no way to do this.
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  3. 3rd June 2011, 19:30 #3
    Lykurg
    Lykurg is offline Guru
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    Default Re: QTreeWidget Horizontal header double click event???

    What's about the signal QHeaderView::sectionDoubleClicked()?
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  4. The following user says thank you to Lykurg for this useful post:

    deepal_de (6th June 2011)
  5. 6th June 2011, 08:31 #4
    deepal_de
    deepal_de is offline Intermediate user
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    Default Re: QTreeWidget Horizontal header double click event???

    Thanks
    answer
    Qt Code: 
    1. // pTee is the QTreeWidget
    2.  
    3.  bConnect = connect( pTree->header(), SIGNAL( sectionDoubleClicked(int) ), this,  SLOT( treeHeaderDoubleClick(int) )  );
    4.  
    5. treeHeaderDoubleClick(int)
    6. {
    7. // What ever you wont to do in click this event
    8. }
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