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Qtreeview column spacing

qtreeview column spacing Attachments. 2. W # width of single items: gridH = self. This function was introduced in Qt 4. This property is ignored if percentWidth is set. 13. Definition at line 287 of file view. -528-529 \sa columnWidth(), resizeColumnToContents()-530 */-531: void QTreeView:: setColumnWidth (int column, int width)-532 {-533: Q_D (QTreeView);-534: d-> header-> resizeSection (column, width);-535}-536-537 /*!-538: Returns the column in the tree view whose header covers the \a x-539: coordinate given. Columns visible by default are shown, the other are hidden. You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. 2. Contribute to dyj095/QT_treeDemo development by creating an account on This function is called whenever column's size is changed in the header. active oldest votes. This function was introduced in Qt 4. Log In. A Gtk. (int column, int width) Method void QTreeView::setColumnWidth(int column, int width) void: setExpanded (const QModelIndex index, bool expand) Sets the width of the given \a column to the \a width specified. png); width:50px; height:15px; subcontrol-position: right top; subcontrol-origin:margin; background-color: white; border-style: solid; border-width: 4px; border-color: rgb(100,100,100); spacing: 5px; } Maybe the key-word here is "sub-control". For example: df$`column with space` df %>% mutate(`column with space` = 1) I wonder how hard it is to incorporate this into the pandas parser, so that functions like query, eval or even df. It provides an efficient object-oriented interface to the tk GUI toolk Demo/Code. How to create a QTreeView which it's items alignment are different even in the same row or column? For example : Row 0 Col 0 = left Row 0 Col 1 = right Row 1 Col 0 = right Row 1 col 1 = left I'm using Python 3. various model/list improvements including column width defaulting; 0. 2. For someone coming from the Cocoa world, understanding how QTreeView and QAbstractItemModel work can be quite hard. PyQt ToolTip for QTreeView. A QHeaderView displays the headers used in item views such as the QTableView and QTreeView classes. int QTreeView::columnWidth ( int column) const. They are used in conjunction with a Gtk. If this property is true all columns will show focus, otherwise only one column will show focus. The PySide. See also isFirstColumnSpanned (). How do i fix this. QtGui. The default value is USE_COMPUTED_SIZE, which means the minimum width will be computed to be the largest minimum width of the column's content. It takes the place of Qt3's QHeader class previously used for the same purpose, but uses the Qt's model/view architecture for consistency with the item view classes. Visible columns are assigned space inside the view by using the size hints and some heuristics. iconSize() . 0 then it should go into the tree as: H1 IOP LSC0 H1:IOP-LSC0_DCU_ID 16. All items on \a column will be drawn and managed by \a delegate: 960: instead of using the default delegate (i. Items are spaced according to their PySide. QtGui. allColumnsShowFocus ¶ Return type. QTreeView. paint() and QTreeView. column – int. Go back to your pivot and select the column with the long URLs. In that case, if a larger column width is required by either the view's header or the item delegate, that width will be used instead. In the following example, the column widths are set to 50%. Set HTML Table Column Widths as a Percentage. Right-click, and enter a value for the column width. This function was introduced in Qt 4. org/wx7q1x2zexw0http://gestyy. QTreeView. This function is called whenever column's size is changed in the header. indentation() property. MFC 6 supports Custom Draw Tree Control, which makes setting different colors for individual tree items much simpler (see Zafir Anjum's article "Setting color and font attribute for individual items" to find out how to do it without Custom Draw support). Pass Text Format via TAGATTR = If you observe closely, you will find that first ‘0’ in column SUBJID is missing. Each channel name is split on ':' '-' and '_'. import sys try: from PySide2 1 Answer1. setColumnHidden (self, int column, bool hide) If hide是真實的column是隱藏的,否則,column示。 See also isColumnHidden( )hideColumn()和setRowHidden( ) 。 QTreeView. column may be -1, in which case no sort indicator will be shown and the model will return to its natural, unsorted order. Right-click or control-click, and choose Format Data Series from the context menu. Explanation of Qt Quick Views QTreeView. cpp. As you are using the QStandardItem and QStandardItemModel classes (which is what I would recommend!) you don't need to bother with the TreeModel class you have found. If you need to set the width of a given column to a fixed value, call QHeaderView::resizeSection() on the view's header. isSortingEnabled() function indicates whether sorting is enabled. It turns out from the left side and looks excellent. Returns the width of the column. 6. Column width can be defined via option absolute_column_width. In Qt Widgets you have QListView, QTableView, and QTreeView however in Qt Quick you only have ListView and TableView (where the TableView is really under the hood multiple ListViews (one for each column) wrapped in a nice API to make it look like a table) but no TreeView… until today. QAbstractItemView does not take ownership of \a delegate. If the name is H1:IOP-LSC0_DCU_ID and the sample rate is 16. The QWidget instance holding the QTreeView instance is correctly spanning the layout it is in (the QWidget spans the width of the QGroupBox minus a little for margins). 3. Note that not all models support this and may even PySide2. 2中。 The QTreeView documentation states that it contains a QHeaderView object called "header" # For some reason the 1st Column's Data is Idented so for now # I added a Hi, I am using Qt SDK 1. See also sizeHintForRow(). QtWidgets. Options. Widgets can be added to a grid in both the horizontal and vertical direction. 2. I did this by reimplementing QtyledItemDelegate. QTreeView entries? *That* is the insane part of the interface. The spacing at the end of the row has no colour. This function was introduced in Qt 4. This property holds whether items should show keyboard focus using all columns. 12: BoundCommandMenu has slots to be dispatched from html binding entity commands to html viewing forms; structured load and save extending the framework in BoundDialog; new TreeView exposing the QTreeView; tree model support in PBTableModel For example, I have created 3 columns of width *,*,2*. @todo: Set column width ''' settingsRequested = Signal (Dataset) ''' Emitted when the user wants to access the Setting menu of a dataset ''' Dark Solarized - Quassel Theme (qss). 0 The split name is in the first column and the sample rate is in the second column. Qt 4. setModelColumn (self, int column) int spacing (self) startDrag (self to display a list of items with a horizontal header, use QTreeView instead. The items can be rendered as large or small icons depending on their PySide. The QTreeWidget class provides a tree view that uses a predefined tree model. TreeView and its associated widgets are an extremely powerful way of displaying data. Dear Qt users, How can I get the optimal width of a QTreeView column so that each item are visible ? sizeHintForColumn(ii) gives me a smaller width than the optimal. Hi Neill, I tried to apply your dotted lines solution to my tree list view. If the minimum section size is set to -1, QHeaderView will use the maximum of the global strut or the font metrics size. dot syntax can deal with more general column names? 👍 Often it’s needed to represent items in a row, where each row can have widgets related to it. 8. Gets or sets the number of columns (data fields) and their names. PySide6. ListStore or Gtk. 6. The QTreeWidget class is a convenience class that provides a standard tree widget with a classic item-based interface similar to that used by the QListView class in Qt 3. While the concept of an item model for a tree view also exists in Cocoa, the way QAbstractItemModel works is quite different from NSOutlineDatasource's. void QTreeView:: setColumnHidden (int column, bool hide) If hide is true the column is hidden, otherwise the column is shown. If this value is set to true, this property will override the-109: resize mode set on the last section in the header. The QHeaderView class provides a header row or header column for item views. At the end we recompute the ideal width (the width of the widest item plus some margin), and the ideal height (the height necessary to show all the items at the viewport's current width, no matter what the viewport's actual height is)—at this point the y variable holds the total height of all the rows. 5 s QTableView ≈ 74 ms ≈ 85 ms ≈ 208 ms QTreeView ≈ 53 ms ≈ 65 ms + 1 s (display) ≈ 184 ms + 6 s (display) int columnViewportPosition(int column) const; 103: int columnWidth(int column) const; 104: void setColumnWidth(int column, int width); 105: int columnAt(int x) const; 106: 107: bool isColumnHidden(int column) const; 108: void setColumnHidden(int column, bool hide); 109: 110: bool isHeaderHidden() const; 111: void setHeaderHidden(bool hide); 112 QTreeView::setHeaderHidden corrupts column width If this is your first visit, be sure to check out the FAQ by clicking the link above. In this article we will show how to use the widget. The ideal width may be greater than the available width, for example, if the viewport is narrower than the width needed to display the longest item—in which case the horizontal scrollbar I'm using QTreeView to display a multi-columns model. This is what I tried so far: void QTreeView:: setFirstColumnSpanned ( int row, const QModelIndex & parent, bool span) If span is true the item in the first column in the row with the given parent is set to span all columns, otherwise all items on the row are shown. A layout needs to be set for the widget to be seen. TreeStore and provide a way of displaying and manipulating data in many ways, including: Sets the width of the given \a column to the \a width specified. The source for this interactive example is stored in a GitHub repository. gridSize(). It is the standard GUI library for Python, which helps in making GUI applications easily. int viewSize = viewport()->width(); int colSize = QTreeView::sizeHintForColumn(column); return qMax(viewSize, colSize);} (damnit wordpress, why doesn’t the <code> tag let me indent easily?) of course it’ll get more complicated if you have more columns, but when it’s just a one-column tree, this is a really nice trick. 961: 962: Any existing column delegate for \a column will be removed, but not: 963: deleted. Creating your own model is rarely necessary, but for some reason tutorials often encourage you to do so. png); width:50px; height:15px; subcontrol-position: right top; subcontrol-origin:margin; background-color: white; border-style: solid; border-width: 4px; border-color: rgb(100,100,100); spacing: 5px; } Maybe the key-word here is "sub-control". H # height of single items: region = self. PyQt5 Treeview Example The code below will create a treeview using the QTreeView class (Run using Python 3). python - How do you set the column width on a QTreeView? Bear with me, I'm still new to QT and am having trouble wrapping my brain around how it does things. Qt5 Tutorial: ModelView with QTreeView and QDirModel. 1 (i. We're going to use Item-Based Tree widget: In the example below, we'll construct 3 top-level tree nodes, and each of them has two child tree nodes as shown in the picture int columnViewportPosition(int column) const; 101: int columnWidth(int column) const; 102: void setColumnWidth(int column, int width); 103: int columnAt(int x) const; 104: 105: bool isColumnHidden(int column) const; 106: void setColumnHidden(int column, bool hide); 107: 108: bool isHeaderHidden() const; 109: void setHeaderHidden(bool hide); 110 QTBUG-67131 Column width being reset unexpected in QTableView. Qheaderview width. Detailed Description. 517 */ 518 QTreeView Class Reference [QtGui module] void setColumnHidden ( int column, bool hide) void setExpanded ( const QModelIndex & index, bool expanded) Using QTreeView with QAbstractItemModel. XML Word Printable. The problem is, that the grid for the lines affects the gid of the columns, too. If you reimplement this function in a subclass, note that the value you return is only used when resizeColumnToContents() is called. def get_visible_indexes (self, column = 0): "find all galleries in viewport" # used to find first index: gridW = self. See full list on codeproject. The silly part is, QTreeView already calls down to the model for almost everything else. That means the width of Column0 is 1/4th, the width of column1 is 1/4th and the width of column2 is 2/4th of the grid. QStandardItemModel(). QtGui. Hi folks! I need to change width of branch indicator of QTreeView, but i cannot find corresponding parameter in QStyle class. QtGui. void QTreeView:: setColumnWidth (int column, int width) Sets the width of the given column to the width specified. visualRect (idx) return region. The path is specified using the models setRootPath() method, where the parameter is the full path to the directory. We can see the present situation of the page by essentially taking a gander at the menu. CSS Multi-column Layout is a module of CSS that adds support for multi-column layouts. If the view and the controller objects are combined, the result is the model/view architecture. e. It comes close to the image you've posted: QDateEdit { background-color: white; border-style: solid; border-width: 4px; border-color: rgb(100,100,100); spacing: 5px; } QDateEdit::drop-down { image: url(:/new/myapp/cbarrowdn. In the same way, I have divided the height of the rows. Visibility determines whether a widget is displayed to the end-user as part of the page. One of the first problems in working with The QTableWidget , which are trying to solve, start to work with this widget - setting QCheckBox in the middle of the cell. All just because the QTreeView::setFirstColumnSpanned interface is badly integrated with the model. the demo running like this: in this code I start a timer in data model to update model for demonstration; in QTableView I give column 1 the checkbox NCReport Qt/C++ Report Generator. QTreeView. contains (idx_rect) or The constructor creates a table widget, and instead of simply using the default delegate, we set our custom TrackDelegate, passing it the column that holds time data. */ int QTreeView::columnAt void QTreeView:: setColumnHidden (int column, bool hide) If hide is true the column is hidden, otherwise the column is shown. 7 and PyQt5 Thanks_ The second column of the TableView is on yellow and the last row is in bold, just to show how it works. . void QTreeView::setColumnHidden ( int column, bool hide) If hide is true the column is hidden, otherwise the column is shown. This combines a tree view with a grid view. This function is used in views with a horizontal header to find the size hint for a header section based on the contents of the given column. 505: 506 \sa columnWidth(), resizeColumnToContents() 507 */ 508: void QTreeView::setColumnWidth(int column, int width) 509 {510: Q_D(QTreeView); 511: d->header->resizeSection(column, width); 512} 513: 514 /*! 515: Returns the column in the tree view whose header covers the \a x: 516: coordinate given. Related course: Create GUI Apps with PyQt5 . QtGui. Virgil Dupras 2009-09-26. Dark Monokai - Quassel Theme (qss). 예제 작성 과정 #1 - Qt Designer를 이용하여 폼 제작 후, 시그널 슬롯 연결하기 The column-rule shorthand CSS property sets the width, style, and color of the line drawn between columns in a multi-column layout. TreeView is filled by databindibg of my own class public class maybe { public Brush Brush { get; set Additional display on QTreeview can be nullified if uniformRowHeights is true 1 000 rows 10 000 rows 100 000 rows QGridLayout ≈ 258 ms ≈ 1905 ms ≈ 18. QTreeView. How to colour the entire row in a QTreeView? Spacing between columns – when set to Yes, adds spacing between columns; 3. On the right you have the ListView with the name from the file. Ugh. 4, no upgrade to 5 possible. Writing custom delegates is the right choice if you want to show your data with a custom graphical representation inside the grid of the view class. This function is used in views with a horizontal header to find the size hint for a header section based on the contents of the given column. I want the one I could have if I'd call ResizeToContent. GitHub Gist: instantly share code, notes, and snippets. sortByColumn (column, order) ¶ Parameters. A proportional-sized row or column shrinks and grows in size on the changing of the grid size. QHeaderView Class, But if you really did meant to resize them exactly with the width values you used on your code: (QHeaderView::Stretch); ui->tableView->setColumnWidth(0,58); The minimum section size is the smallest section size allowed. Column width should be separated by ‘, ‘. \sa columnWidth(), resizeColumnToContents() */ void QTreeView::setColumnWidth (int column, int width) {Q_D (QTreeView); d-> header-> resizeSection (column, width);} /*! Returns the column in the tree view whose header covers the \a x: coordinate given. The second and third column should be exactly 50 pixels wide no matter, what might be widgets size. QTBUG-66884 Reg My QTableView has only one column and few rows, but the QTableView shows a big white space in the row section after displaying the rows and a white space after displaying a single column. But when I select a row, QTreeView won't colour the entire row. Now when you refresh the pivot table, the column doesn’t resize. The minimum width for the column. In addition, you can set the widths of your TABLE columns to display your columns at a specific width. QtGui. , itemDelegate()). com Returns the width size hint for the specified column or -1 if there is no model. e. GitHub Gist: instantly share code, notes, and snippets. viewport (). The row space and null space are two of the four fundamental subspaces associated with a matrix A (the other two being the column space and left null space). For more info, including installation instructions, see Windows UI Library. These examples are extracted from open source projects. Export. setColumnWidth (self, int column, int width) 設定的給定的寬度column到width規定。 這個函數中引入了Qt 4. The spacing between columns is the gutter. QTreeView. \a column. Forums; Tutoriels; Magazine; FAQs; Blogs; Projets; Chat; Newsletter; Accueil Actualités IT Pro Conception Cycle de vie du logiciel Conception; UML; Merise; Java Plateforme et langage Java Java The following are 8 code examples for showing how to use PyQt4. 7. . Enhance tool button size and spacing #181, #183, #202 header using the last column; Tested on Python 27, 34, 36, 37 Added image for the missing QTreeView Python has several options for constructing GUI and python tkinter is one of them. Qtreeview processes large amounts of data (uses 10 million pieces of data and only partially refreshes each time) This article is an English version of an article which is originally in the Chinese language on aliyun. See also isFirstColumnSpanned (). You can achieve this by a stylesheet treeView->setStyleSheetQuestion: Tag: qt,pyqt,pyqt4,pyside I have a QStandardItemModel that I am displaying as a QTreeView with multiple columns (if it matters, I am showing the tree as the central widget of a QMainWindow). Relation to coimage [ edit ] If V and W are vector spaces , then the kernel of a linear transformation T : V → W is the set of vectors v ∈ V for which T ( v ) = 0 . 2. QtGui. 964: 965 ote If a delegate has been assigned to The TreeView control is included as part of the Windows UI Library, a NuGet package that contains new controls and UI features for Windows apps. Returns the horizontal position of the column in the viewport. Database file : https://www. When setting a smaller number of columns than the current the extra columns will be removed, and hence all the data stored stored in those columns. See also isColumnHidden(), hideColumn(), and setRowHidden(). This function was introduced in Qt 4. The image shows a QTreeView widget with data inside it. order – SortOrder. QAbstractItemView. spacing(), and can exist within a notional grid of size specified by PySide. Closed; is required for. When manipulating column width for large item view's, rendering is slow. Thanks by advance void QTreeView:: setFirstColumnSpanned ( int row, const QModelIndex & parent, bool span ) If span is true the item in the first column in the row with the given parent is set to span all columns, otherwise all items on the row are shown. See also isColumnHidden(), hideColumn(), and setRowHidden(). We begin by setting the column headings, and then iterate through the data, populating the rows with the name and duration of each track. An example of a grid layout with widgets is shown below: R and dplyr use backtick( `` ) to quote column names with space and special characters. -110-111: By default, all columns in a tree view are movable except the first. com/ew5vJ8 Qt/C++ - Lesson 016. The delegate's sizeHint() method is used to obtain each star's dimensions, so the cell will provide enough height and width to accommodate the stars. 4 Columns and Their Properties This is a discussion forum run by Qt Centre --- the Ultimate Qt community site. Hello! I have a treeview and I have to do alternating color lines in it. The items in the tree can be sorted by column according to a predefined sort order. PyQt5 supports a grid layout, which is named QGridLayout. int QAbstractItemView. The amount of indentation used to indicate levels of hierarchy is controlled by the PySide. void QTreeView:: setFirstColumnSpanned ( int row, const QModelIndex & parent, bool span) If span is true the item in the first column in the row with the given parent is set to span all columns, otherwise all items on the row are shown. This still separates the way that data is stored from the way that it is presented to the user, but provides a simpler framework based on the same principles. oldSizeand newSizegive the previous When this state changes a PySide. NCReport is a powerful, fast, multi-platform and easy to use report engine library, report generator, report designer, report writer, reporting tool and reporting solution written in C++ based on Qt cross-platform application and UI framework. … QTabWidget QStackedWidget QTreeView QMenu::item { /* not reflect : transfer list bottom: context menu , column context menu */ padding-left: 18px ; QTabWidget QStackedWidget QTreeView QMenu::item { /* transfer list : context menu , column context menu */ I am trying to put them into a QTreeView. Note that the Project Explorer itself is a tree. class DataTreeView (QTreeView): ''' Subclass of QTreeView to display the dataset list as a tree. If sorting is enabled, the user can sort the items by clicking on a column header. int QTreeView::columnViewportPosition ( int column) const. I've created and populated a QTreeView with two columns: class AppForm(QMainWindow): def__init… ensuring that the view does not waste any of the space assigned to it for-108: its header. QTreeView. Sorting can be enabled or disabled by calling PySide. QtGui. How to remove row from QTreeView using QAbstractItemModel , @Jaa-c if you like, take this and copy-paste it into an answer from yourself and I'll mark it as the accepted answer. The usual way to change the width of the vertical bars in a Column chart type is to change the gap width (in all versions of Excel, Windows and Mac). QListView. Forums; Tutoriels; Magazine; FAQs; Blogs; Projets; Chat; Newsletter; Accueil Actualités IT Pro In this tutorial, we will learn QTreeWidget. QTreeView. I just need to change the row length and column length of the QTableView to the string list which i use for the model. 基于QT的QTreeWidget扩展的多级组织结构(多级部门及带圆形头像的人员). collapsed() or PySide. Returns the size hint for the column's width or -1 if there is no model. 3. Qt Version 4. drawBranches() to remove 20 pixels (the default indentation) from the QRect of these items. You may have to register before you can post: click the register link above to proceed. See also isColumnHidden(), hideColumn(), and setRowHidden(). Sorts the model by the values in the given column and order. Support is included for establishing the number of columns in a layout, as well as how content should flow from column to column, gap sizes between columns, and column dividing lines (known as column rules) along with their appearance. Now, say that I start my application, resize the columns to be of the width I want, and then make sure that the scrollbars are not necessary (and therefore not visible). The code below will add the directory view (QTreeView combined with QFileSystemModel) to a grid window. Sets the width of the given \a column to the \a width specified. visibleRegion idx_found = [] def idx_is_visible (idx): idx_rect = self. This is a discussion forum run by Qt Centre --- the Ultimate Qt community site. file-up. 3 Visibility Section. Here is the output. Tree and List Widgets¶. expanded() signal is emitted with the model index of the relevant item. QTreeView. How to set QCheckBox in the cell center in QTableWidget?. spacing, and general layout of children much like QWidget layouts GridLayout is ideal for all tree types (including multi-column trees), as it provides attached properties for its children to specify row and column Row and column properties can (currently) only be specified in PyQt5 (python with qt5 bindings) supports a tree view widget (class QTreeView). \sa columnWidth(), resizeColumnToContents() */ void QTreeView::setColumnWidth (int column, int width) {Q_D (QTreeView); d-> header-> resizeSection (column, width);} /*! Returns the column in the tree view whose header covers the \a x: coordinate given. The first column should occupy the remaining space. com and is provided for information purposes only. Select the data series by clicking on one of the bars (just to be sure the data series is selected). */ int QTreeView::columnAt Is it possible to redefine the row height of certain individual rows within a QTreeView? I have a custom QTreeView, custom QAbstractItemModel and a custom QStyledItemDelegate, but it seems that all the sizeHint methods are either called only once (initially) or are not virtual in the base classes. We'd presubaly have to intercept "model changed" events, only to then walk all the treeview. If I enlarge my widget the first column should automatically occupy the need free space, whereas the second and third column should retain their given widths of 50 pixels. (Dec-31-2019, 10:19 PM) Denni Wrote: Okay first you are approaching this in the wrong manner the data in a QTreeView or QTreeWidget should be stored within your code within a List or Dictionary and any and all manipulation you are doing to the data occurs to this in code List/Dictionary -- then whenever you want you simply update the QTreeView/QTreeWidget with your data. oldSize and newSize give the previous size and the new size in pixels. Since QTreeView's parent widget is the correct dimensions, I figured it's something more local to QTreeView, but when I use the setSizePolicy, none of the policies I've used seem to resolve the issue. When the tree column isn't left-most there's a rather ugly gap in the highlighting; Add grid lines which help readability in many of the uses that are half-table half-treeview. Closed; QTBUG-67625 QTreeView grows in wide after sorting. QtWidgets. (int column, int width) Method void QTreeView::setColumnWidth(int column, int width) void: setExpanded (const QModelIndex index, bool expand) In the name of space usage and attractiveness I have un-indented the grandchildren of the (invisible) root node. 3. For more information on properties of this section, see the Visibility Section section in Properties Common in the Page Editor. See also isFirstColumnSpanned (). QListView. pyqt,tooltip,qtreeview. columnResized (self, int column, int oldSize, int newSize) This method is also a Qt slot with the C++ signature void columnResized(int,int,int). That is because SAS did not define any number format and current number format for column A is ‘General’. To-112: disable movement of these columns, use QHeaderView's-113 Sets the width of the given \a column to the \a width specified. bool. QtGui. So as we set the both views with the same model each time we change a name from a view, instantly the other view updates its content with the new model. In this example we’ll create QTreeWidgetItem with a QSpinBox and QPushButton for each row. -540 */-541 QTreeView: Drawing speed is slow. It comes close to the image you've posted: QDateEdit { background-color: white; border-style: solid; border-width: 4px; border-color: rgb(100,100,100); spacing: 5px; } QDateEdit::drop-down { image: url(:/new/myapp/cbarrowdn. TreeView Pure CSS HTML Example design . Now the column width doesn’t change each time the pivot is refreshed, but now you need to define how wide the column with the URLs should be. 1) with MSVC on Windows and, in my application, I keep track of the width of the different columns I have in a QTreeView object. setSortingEnabled(). The tree column cannot be rearranged with respect to the others. If it's too narrow, readers will wander across the gutter to the next column instead of wrapping around to the next line in the column. Applies the theme columns to this view. I've tried to reimplement all virtual methods in QCommonStyle class which return int, QSize or QRect but the width of branch indicator is always 20. When I set colour for QPalette::AlternateBase, I find out that this is still not colour the left spacing of each row. void QTreeView::setColumnWidth ( int column, int width) Sets the width of the given column to the width specified. This function was introduced in Qt 4. void QTreeView:: setColumnWidth (int column, int width) Sets the width of the given column to the width specified. Pyqt qtreeview remove row. sizeHintForColumn (self, int column) Returns the width size hint for the specified column or -1 if there is no model. qtreeview column spacing