How to Map member variables with Qt Widgets?

[marcel]

Yeah, what about signals and slots?

[rajeshs]

How to achieve this using signals and slots?

[marcel]

Connect the line edit's textChanged signal to a slot in your class and in there just assign the new text to the member variable.
The signal will get emitted each time the text changes.

[rajeshs]

Thank you for your valuable reply,

Is there any other straight mechanism to do this?

[marcel]

Thank you for your valuable reply,

Is there any other straight mechanism to do this?

Well, this is the most easiest one.
You could also try QSignalMapper if you have a lot of line edits, but it is also based on signal/slots.