how to draw a custom slider which can be moved by mouse as the Qt intrinsic slider?

[opengpu]

how to draw a custom slider which can be moved by mouse as the Qt intrinsic slider?
i already use QPainter draw some additional effect on the slider-bar.

[dheerendra]

Is it repeat of the question ?

As explained earlier, you need to draw things on your own using the paintEvent(..) & handle the mouse events appropriately. Please look at the topics how to write customWidgets.

[opengpu]

yes.
i used QGraphicsView before.
but this time seems no need to use QGraphicsView, and now i am wondering how to draw the slider and how to move it by the mouse
thank you very much

[dheerendra]

You can do it in graphics view also. Again I'm repeating the following steps.

1. Look at how custom widgets are created.
2. re-impliment the paintEvent(...) function.
3. Draw slider, handler, bar everything on your own.
4. re-implement mousePress, mouseRelease events.

Look at the examples I have sent earlier. You are asking the code of the custom slider which you wanted. This will will be very difficult. Here people will help you with specific problem.

[opengpu]

ok,i just wonder if not use QGraphicsView, just use the QPainter, is it more simple and easy?
and can u simply give a hint to to move the slider by the mouse while not use QGraphicsView? check the mouse pos in the slider-rect?

[dheerendra]

1. Draw your slider handle in side the paintEvent(..) function.
2. Handle mouse press, release and move function.
3. Change the x, y position of your handle inside the mouse event handlers.
4. Call paintEvent(...) again by calling update(..)

Look at the pathStroke example. It may help you.

[mrjj]

Hi
Just as a note.
QtCreator comes with something like the gradient thing.

You could look around its code to see how its done.