Editing in a QComboBox

[sterling]

I am attempting to derive a class from QCombobox that has some specific properties. As yet, I can't get the line into a mode to be able to edit it. It appears that I can select a line in the list and can select the contents. Currently, the constructor looks like this.

ListSelect::ListSelect( QWidget *parent )
: QComboBox( parent )
{
setEditable( true );

setInsertPolicy( QComboBox::InsertAtTop );
}

Question:
How to I activate this control (focus in the edit field) so I can edit the information in the field?
How do I select a portion of the string in the edit field?

Thanks

[anda_skoa]

How to I activate this control (focus in the edit field) so I can edit the information in the field?

Setting it to editable should have done that. What happens if you click into the line edit?



How do I select a portion of the string in the edit field?

Get the line edit and call its setSelection() method.

Cheers,
_

[sterling]

If I click into the line edit, the cursor does not show up anywhere. It's like the box never gets keyboard focus. If I set the cursor into an edit field, the vertical bar cursor shows up and I can type and navigate in the line. None of that behavior show up in the QComboBox. Typing does nothing when there is a blank selected or when there is actual text selected.

S

[anda_skoa]

Very strange.
Does this also happen if you take a normal QComboBox and set editable to true from outside?

Cheers,
_

[sterling]

The combo box works just as expected.

This is the definition of the derived class

class ListSelect : public QComboBox
{
Q_OBJECT

public:
ListSelect(QWidget *parent = 0);
ListSelect( void );
~ListSelect();
};

[wysota]

Is this complete code? Didn't you by any chance reimplement any code responsible for handling mouse events? How are you using the class? What properties do you set on the widget?

[sterling]

Found it. This was built from a custom widget that was put into design. I had set the focusPolicy to keyboard. Changing it to StrongFocus fixed the problem. I compared the ui_file entry for a ComboBox with mine and commented out properties until it worked. There are still other problems but those for later posts.