QTableView QCheckBox QComboBox

[pmjz]

How can I

display QCheckBox in the first Column of the QTableView, and QComboBox in several other columns.

get the signal from those QCheckBox and QComboBoxes

Thanks in advance

[andre]

Views display checkboxes if the model has the userCheckable flag set, and the model returns valid data for the Qt::CheckStateRole.

To use a combo box as your editor, you will need to set an appropriate QItemDelegate subclass that creates a combobox as the editor widget.

The model will give you a generic dataChanged() signal if the data is modified. Depending your your model, you may get more specific signals from there.

[pmjz]

thanks a lot, if the users edit,check or select any item from the GUI, can that dataChanged() signal be emit automatically? In my perspective, model is different with view.

[giesbert]

If you create your own custom model, YOU must take care of signals like dataChanged etc.
To get more info on that, read "an editable model":http://doc.qt.nokia.com/4.7/model-view-programming.html#an-editable-model

[pmjz]

QComboBoxes has already been displayed, but only double click the cells, the comboboxes will appear, I want those comboboxes appear as the tableview is displayed, how can I do for that, thanks in advance

[andre]

That is how delegates work. You can set a widget for a table cell using setCellWidget, but it will not be very performant for larger data sets, and it goes against the grain of model view programming a bit.

[A Former User]

Yes, the editor is created when the user starts editing the cell.

If you want your QComboBox to appear all the time, I guess you'll have to reimplement the paint method of your delegate and draw the QComboBox by yourself. See "QStyle::drawComplexControl":http://doc.qt.nokia.com/latest/qstyle.html#drawComplexControl

[A Former User]

There's a wiki article "Combo Boxes in Item Views":http://developer.qt.nokia.com/wiki/Combo_Boxes_in_Item_Views that shows you how to create a [[Doc:QStyledItemDelegate]] subclass for that task.