qtreeview

QTreeView + QFileSystemModel rename implementation, qtreeview Previously, when I wrote the Markdown editor, I wrote a simple resource Browser Based on QTreeView + QFileSystemModel. Now I want to add a rename function to it. In fact, it is relatively simple to implement rename. First, set setEditTriggers (q1_actitemview: EditKeyPressed) in

How to make Qtreeview display 10 million data quickly, and memory consumption is low? This problem has plagued me for a long time, on the internet to find a lot of relevant information, have not found a reasonable solution, today here to give my solution to friends, for everyone to learn from each other.I started using the Qtreewidget control to display my data, found that the control in the display of 10000 rows below the data can also cope with, but

Tags: qtreeview qfilesystemmodel rename edit keypressevent Previously, when I wrote the markdown editor, I wrote a simple resource Browser Based on qtreeview + qfilesystemmodel. Now I want to add a RENAME function to it. In fact, it is relatively simple to implement rename. First, set setedittriggers (q1_actitemview: editkeypressed) in qtreeview. In this way, y

QT Model/viel/delegate model/view/delegate, the function is very powerful, but to be proficient in the application need to do more hands, can master. At present, the degree of understanding is very small, first write it down ... Define the model to inherit from Qabstractitemmodel, define the item used in the model, can be customized, can also inherit, not yet use the delegate delegate Show view by View->setmodel (); Qtreeview Model=new TreeModel ();

Qtreeview/qtableview Self-sorting functionQt can sort qtreeview/qtableview a column by Sortbycolumn ()can also be implemented by setsortingenabled () allows the user to click on the table header to sortSort by default is to sort the contents of itemIf you useNew Qstandarditem ("XXXX");OrNew Qstandarditem (); Mitem. SetText ("XXXX");Because of its function parameter characteristics, it causes QT to assume th

Method 1: qdirmodel is used for directory. qdirmodel is a model provided by QT for Tree display of file directories. The specific usage is as follows: # Include Int main (INT argc, char * argv []){Qapplication app (argc, argv );Qsplitter * splitter = new qsplitter;Qdirmodel * model = new qdirmodel;// Create data from the default directoryQtreeview * tree = new qtreeview (splitter );Tree-> setmodel (model );Tree-> setrootindex (model-> index ("C ://")

The title, the effect for Qtreeview or Qtableview in the case of focus, move the mouse and a short stay, you can eject the ToolTip and display the current mouse pointer to the row of data There are two different ways to display data that is too long to be hidden: 1, the use of the entire window/view event filter Suppose the window has a TreeView control with the name BOOL Mywidget::eventfilter (QObject *editor, qevent *event) { if (Event->type () =

Http://hi.baidu.com/%B3%BE%C3%CE%C8%F4%D0%E9/blog/item/d162a0828c0b16a80df4d27a.html Tree control Qtreeview Implementation 2009-11-23 11:50 Method One: The use of Qdirmodel for the reality of the directory, Qdirmodel is the QT Secondary School for the file directory tree display of a model. The specific use is as follows:#include int main (int argc, char *argv[]){Qapplication app (argc, argv);Qsplitter *splitter = new Qsplitter;Qdirmodel

For the first time, the QT style sheet is exposed to the project. The main problem is to modify the interface of Qtreewidget (or Qtreeview). Official help documents actually play a big role, the information on the Internet is relatively miscellaneous, and the general description is not clear. It took some time today to solve some of the problems encountered in the project, although not very serious problems, but for the new contact with Qt, should als

From pyqt4.qtgui import (qapplication, qcolumnview, qfilesystemmodel, Qsplitter, qtreeview) # Note """ The qcolumnview class provides the implementation of a model/View column view, inheriting q1_actitemview Provides a data model for a local file system that inherits the q1_actitemmodel Implements a shunt widget that inherits the qframe Provides the implementation of a default model/view Tree View, inherits qabstractitemview, and inherits qhelpcontent

Look at the example below and you'll see. Method One: Use Qdirmodel to carry on the reality of the catalogue, Qdirmodel is a model that the QT Secondary school provides for the file directory tree type display. The specific use is as follows: #include The results shown are as follows: Method Two: Set the tree structure by oneself. "Treeview.h" file #include "Treeview.cpp" file #include "treeview.h" Treeview::treeview (): Qtreeview ()

First, you must build a model by yourself. Actually, it is to implement the abstract class q1_actitemmodel. There are many articles about this process, such as examples.   Add the following code to the data function of the TreeModel class: If role =

Here, we take the simpletreemode. pyw file in the python built-in demo as an example to briefly introduce how to use checkbox in the Treeview of pyqt. All the work is actually done in the treemodel class. First, add self. checklisk = [] to the _

  First, you must build a model by yourself. In fact, it is to implement the abstract class q1_actitemmodel. There are many articles about this process, such Bytes. The simpletreemodel project path is usually in the itemviews directory of the

You need to implement a function: In the TreeView of QT, you can use the check box, and select the check box of the parent node to select or cancel the check box of the child node. Here we will take the simpletreemodel project included with QT as an

1, Qlist qstandarditemmodel::finditems (const QString & text, Qt::matchflags flags = Qt:: matchexactly, int column = 0) const When the second argument is not specified, this function searches only the top-level elements of the TreeView and does not

;hasChildren(index)) { return; } bExpanded = m_treeView->isExpanded(index); } QPixmap pixmap = bExpanded ? QPixmap(m_expandIconName) : QPixmap(m_collapseIconName); QRect decorationRect = QRect(viewOption.rect.left() + 14, viewOption.rect.top() + 12, m_pixmapHeight, m_pixmapWidth); painter->drawPixmap(decorationRect, pixmap);}bool ItemDelegate::editorEvent(QEvent *event, QAbstractItemModel *model, const QStyleOptionViewItem option, const QModelIndex ind

If you do not want to expand the collapse icon (triangle icon), you can use the following code { Hide the icon before the root node item (expand the collapse icon)Ui.treewidget->setrootisdecorated (FALSE);If you just hide the expand collapse icon for the root point and the child node remains, you only need the above statementUi.treewidget->setstylesheet ("qtreeview::branch:has-children:!has-siblings:closed,\Qtreev