'update' was not declared in this scope. (Solved)

[houmingc]

created a class and not deriving from QWidget
How to resolve when i get the error below :
'update' was not declared in this scope.

[mrjj]

@houmingc said:

'update' was not declared in this scope.

What are you deriving from then ?

[dheerendra]

update(..) is method defined in QWidget. If you have not derived your class from QWidget, then surely you will hit the error. What are you trying to do here ? What is that you are expecting by calling update(..) ?