selection in QLineEdit

[spigel]

hello, everybody!

Now I look to QT examples, like Calculator where we have QLineEdit as display widget.
I have just tried some things with 'calculator' code, GUI code.

I will disable text selection in display but how?
I know we can disable selection in view's (like QTabView or QTreeView)
but how to do it for QLineEdit?

setFocus(NoFocus) ?

or some other things like:
1. set in palette highlight color same as background color.
2. if receive signal 'selectionChange' set selection back to 0

May be there are another solutions for this?

[wysota]

How about just setting the readOnly property to true?

[spigel]

yes, I've tried setReadOnly(true) but it do nothing to difference.
readOnly property just disable user input to LineEdit, but it don't disable text copy or selection.

[wysota]

Connect to selectionChanged() signal and call deselect(). Or just use QLabel instead of QLineEdit. What's the point of using the line edit if you want to disable all its functionality?

[spigel]

I want to disable only text selection in QLineEdit not other!
thank you!

[wysota]

Not other what?

[spigel]

thank you. QLabel is good class for replace QLineEdit if you want only display value.
but main question was how to disable text selection in QLineEdit, anything else.

[marcel]

No easy way of removing the selection in a line edit.
But what about using a single line QTextEdit and setting the text interaction flags to no interaction?

[spigel]

QLCDNumber = good class for calculator (style like Citizen calc)

[wysota]

Why would you want to allow input but disallow selection? Anyway did you try the combination of signals-slots I suggested earlier?

[spigel]

yes, thank you.
order of goodies:
1. eventFilter(); for events like MouseButtonPress, Release and Move return true;
2. use setDisabled + catch input in parent widget, because when lineedit disabled it would not receive events like keyPress, keyRelease
3. use signal changeSelection and set text selection in slot to zero
4. use QLCDNumber
5. use QLabel