Draw Line

[Lykurg]

On other option is also to install an event filter, catch the paint event and then draw there.

[Ceelaz]

What do you like to draw exactly? Do you like to draw a line on an existing widget?
Then you have to re-implement the paintEvent()-Method in a subclass of the widget. You can call Subclass:aintEvent(event); to draw the widget and then use QPainter to draw extra stuff on it...

It is possible to write your own paint()-Funktion but you have to call it from the paintEvent()-Method, otherwise it will not work out.

[Lykurg]

It is possible to write your own paint()-Funktion but you have to call it from the paintEvent()-Method, otherwise it will not work out.

That is as said not true! You can fetch a paint event and draw from outside the widget in any event filter without to touch paintEvent().

[aamer4yu]

Well... go ahead.. write your own function..
in your function.. draw the line onto a pixmap.. and then set this pixmap on a label..

but that wud be inefficient,, dont you think so ?