qtreeview

I need working examples (c++) of show own data model in QtreeView. Nathan Pitman There's a pretty good QTreeView/QAbstractItemModel example here . It's fairly straightforward once you get used to QT's ultra-generic model... just don't expect it to be as simple or obvious as Java's TreeModel. 来源： https://stackoverflow.com/questions/4354515/qabstractitemmodel-and-qtreeview

I want to have my QTreeView always expanded all of the items. In that case, all expand button / decoration are unnecessary and I want get rid of them. How can I delete all of them? setRootIsDecorated will only delete that buttons on first level... This is what I've done in the past for this problem, it's a bit of a hack but it's worked pretty well. In this case none.png doesn't exist. treeView->setStyleSheet( "QTreeView::branch { border-image: url(none.png); }" ); See https://forum.qt.io/topic/4767/how-to-get-rid-of-expande-collapse-qtreewidgetitem-indicator This got rid of the top level ones

Today I'm trying to configure a QTreeView to fit my requirements. My view has basically three columns. The second and third column should be exactly 50 pixels wide no matter, what might be widgets size. The first column should occupy the remaining space. 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. This is what I tried so far: main.cpp #include <QApplication> #include <QTreeView> #include <QDebug> #include <QStandardItemModel> #include <QHeaderView> #include

I'm implementing drag and drop QTreeView based on my custom model. All works fine, my tree displays data, drag and drop is enabled and now the last step lies ahead of me - to drop and trasfer dragged data. To do this I need to implement mimeTypes, mimeData and dropMimeData methods in my model. And now my question: Is there any easy standard way how to pass an arbitrary Python object through QMimeData? I'm doing just an internal move within QTreeView which displays hierarchy of my Python classes Person. And I want to reorder them. No drag and drop outside the application, not even outside of

I have a QTreeView subclass (and QAbstractItemModel subclass) which has a nice horizontal header. I would like to add vertical headers (going down the left side) to match. But unlike QTableView which has separate vertical ( setVerticalHeader() ) and horizontal headers ( setHorizontalHeader() ), QTreeView only allows a single header ( setHeader() ). I know that I can just pretend that the leftmost column is the header and render it with a different background color (I don't need the ability to resize or rearrange the rows, so I wouldn't have to implement any of those special behaviors). But

I'm trying to display clickable hyperlinks in my QTreeView. I was able to do this using QLabels and QTreeView.setIndexWidget per the recommendations from this question. Hyperlinks in QTreeView Unfortunately, my QTreeView can be rather large (1000s of items), and creating 1000s of QLabels is slow. The upside is that I can use a Delegate in my QTreeView to draw text that looks like hyperlinks. This is super fast. The problem now is that I need them to respond like hyperlinks (i.e. mouseover hand cursor, respond to clicks, etc.), but I'm not sure what the best way to go about that is. I've been