I have a QTreeView and I want to expand all child items of a recently expanded item. I tried using .expandAll(), but it expand all others items also. I’m having a hard time to get the ModelIndex of the item that was lastly expanded, If i do have it I can recursively expand .
[slot] void QTreeView :: expandRecursively (const QModelIndex &index, int depth = -1) Expands the item at the given index and all its children to the given depth. The depth is relative to the given index. A depth of -1 will expand all children, a depth of 0 will only expand the given index.
Hi everyone, I have just started playing with Qt’s MVC classes and have created a hierarchical model to display in a QTreeView . Some of the nodes, however, have a fair amount of children and when I expand these nodes (or, heaven forbid,.
10/24/2011 · Re: QTreeView: expandAll() and expandToD epth(int) not working Probably has something to do with the fact that the QFileSystemModel is dynamically populated by the QFileSystemWatcher. If you have a large file system, then the model will almost certainly have not been fully populated by the time you call expandAll(), so only the items that have …
public: void ExpandAll() public void ExpandAll () member this.ExpandAll : unit -> unit Public Sub ExpandAll Examples. The following code example expands all the tree nodes in a TreeView control when a CheckBox is checked, and collapses the FirstNode when the CheckBox is cleared. This example requires that you have a Form with a CheckBox, and a TreeView control with a.
WPF TreeView : Where is the ExpandAll () method – Stack Overflow, QTreeView Class | Qt Widgets 5.15.2, QTreeView Class | Qt Widgets 5.15.2, Opens every node in the tree.
void QTreeView :: expand ( const QModelIndex & index) [slot] Expands the model item specified by the index. See also expanded(). void QTreeView ::expandAll [slot] Expands all expandable items. Warning: if the model contains a large number of items, this function will take some time to execute. This function was introduced in Qt 4.2.
[slot] void QTreeView :: expand (const QModelIndex & index) Expands the model item specified by the index. See also expanded(). [slot] void QTreeView :: expandAll Expands all expandable items. Warning: if the model contains a large number of items, this function will take some time to execute. This function was introduced in Qt 4.2.
A QTreeView implements a tree representation of items from a model. … A depth of -1 will expand all children, a depth of 0 will only expand the given index. Warning: if the model contains a large number of items, this function will take some time to execute. See also. expandAll(), 9/28/2017 · Normally, when you display a TreeView, the nodes are collapsed by default and the user clicks on the expander widgets to expand nodes that they want to look at. You can expand all nodes in the TreeView by default by setting up an ItemContainerStyle for the TreeView and specifying that you want each TreeViewItem expanded. Below, we show the first part…
