context menu advice

[larry104]

Hi,

I would need some advice how to implement context menus the right way.

Here the situation:

I have a main widget which contains two tableviews each assigned to a model. Right click over a row triggers a different action for each of the two tables.

scenario 1:
subclass tableview and implement
void MyTableView1::contextMenuEvent(QContextMenuEvent* e) and
void MyTableView2::contextMenuEvent(QContextMenuEvent* e)
Check if
QModelIndex index = indexAt(e->pos());
is valid
Problem 1: hard to get from here to the model data to change something.

scenario 2:
Implement contextMenuEvent(QContextMenuEvent* e) for main window and check if
QModelIndex index = table1->indexAt(e->pos());
QModelIndex index = table2->indexAt(e->pos());
are valid.
Problem 2: e->pos() gives me the position releative to the main window. Is there a way to translate these positions relative to the tableViews?

So, in summary what is the correct way to implement context menus: globally or relative to the widget

Thanks.

[jpn]

Problem 1: hard to get from here to the model data to change something.

Why? You can access the model through QAbstractItemView::model().

model()->setData(index, data, role);

model()->setData(index, data, role);

To copy to clipboard, switch view to plain text mode 

Problem 2: e->pos() gives me the position releative to the main window. Is there a way to translate these positions relative to the tableViews?

Yes, see docs for QWidget::mapFrom*() and QWidget::mapTo*().

[symbolsoden]

The best practice is to subclass each QTableView and implement contextMenuEvent locally (scenario 1). To access model data, use model()->data(index) from the valid QModelIndex. This keeps context handling modular and avoids position translation issues.

*** Moderator note: Spam link removed. There is zero tolerance for spam in this forum. ***

[d_stranz]

@symbolsoden: This is a 19 year old thread. If your only purpose for replying to it was to post a spam link to a games website, then don't do that again or you'll be banned.