How to simplify syntax

[jsulm]

@JacobNovitsky said in How to simplify syntax:

I need something like this

Then write it. What is the problem?

[VRonin]

That walks like a table, quacks like a table and swims like a table. Are you sure you don't actually want to just use QTableWidget (or QTableView + model if you want to be fancy)?

[JacobNovitsky]

@VRonin You're a devil in disguise!
Yes, I'm going to try tableView

[JacobNovitsky]

@JacobNovitsky =

It looks fine, now I need to find a way to get indices for selected columns
any advise?

[jsulm]

@JacobNovitsky https://doc.qt.io/qt-6/qtablewidget.html#selectedItems and https://doc.qt.io/qt-6/qtablewidget.html#indexFromItem

[JacobNovitsky]

tried to post code chunk, but output msg said it was spm
https://justpaste.it/g6kt5

above works, but selects all columns together with one click, I need to be able to do it one by one
please advise

[VRonin]

instead of calling selectedIndexes and doing manipulation, have you tried calling selectedColumns instead?

[JacobNovitsky]

void MyWindow::onSelectionChanged() {
    // Fetch the currently selected columns using selectedColumns()
    QItemSelectionModel *selectionModel = tableView->selectionModel();
    QModelIndexList selectedColumns = selectionModel->selectedColumns();

    // Convert QModelIndexList to a list of column indices
    QList<int> selectedColumnList;
    for (const QModelIndex &index : selectedColumns) {
        selectedColumnList.append(index.column());
    }

    // Sort the list of selected column indices
    std::sort(selectedColumnList.begin(), selectedColumnList.end());

    // Print selected column indices
    qDebug() << "Selected columns:" << selectedColumnList;
}

same result

[VRonin]

@JacobNovitsky said in How to simplify syntax:

same result

so what does qDebug() atually print there?

[JacobNovitsky]

@VRonin it prints Selected columns: QList(0)
but I can select only all lines with one click

[VRonin]

@JacobNovitsky said in How to simplify syntax:

but I can select only all lines with one click

I'm confused, what is the behaviour you would want to happen?

[JacobNovitsky]

Lets say, I selected line 1 3 and 9
or I selected lines 1 2 3
I need to 1) select only 123 out of 9 lines total
2) I need to get selected indices :)

[VRonin]

In your code you have tableView->setSelectionBehavior(QAbstractItemView::SelectColumns); that makes it so when you select a cell, the entire column gets selected. I don't believe that's what you want, delete that line

[JacobNovitsky]

https://justpaste.it/dwq1c
Above is my last working code, it selects rows line by line as requested,
but outputs
Selected columns: QList()
with no inidices

I believe problem in
QList<int> MyWindow::getSelectedColumns()
Need to clarify/fix this syntax

[VRonin]

Yes, you need to revert to selectedIndexes instead of selectedColumns. My suggestion above was a misunderstanding of your requirement

[JonB]

@JacobNovitsky
I'm not sure I follow. If the user selects "lines" (rows) then you won't get any selected columns back? (Because whole columns are not selected, just certain columns within certain rows.) To see which columns are selected within various selected rows use QModelIndexList QItemSelectionModel::selectedIndexes() const, which gives all selected cells and then look at the column() values within that. If that is what you are looking for.

[JacobNovitsky]

@JonB oh, it does indeed outputs columns selected, but I really meant rows :)
So I do look for the same but for rows?

[JonB]

@JacobNovitsky
Well, yes!
There are 3 methods to see what is selected:

• selectedColumns() --- just complete columns selected.
• selectedRows() --- just complete rows selected
• selectedIndexes() --- any mix of individual cells (not necessarily contiguous) selected. Always valid. Inspect each item's row() and column() to see what they are, could have any values.

[Pl45m4]

@VRonin said in How to simplify syntax:

That walks like a table, quacks like a table and swims like a table

LMAO :D

[VRonin]

@Pl45m4 It's science: https://en.wikipedia.org/wiki/Duck_test