Hidden QDialog : force the update() or repaint()

[wysota]

Could you explain that loop thing again? Maybe a screenshot is needed?

[Nyphel]

I can't post screenshots, sorry


1) I have an implementation class <A>, that herits from QDialog.
This class create a QDialog that contains some text, a QTableWidget en 2 buttons.
The QTableWidget is updated, anf filled with some data (e-mails).
I have reimplemented the showEvent() en resizeEvent() in order :
- to fit the QDialog (and it's QTableWidget) to the content
- to adjust the QTableWidget size (and content display) when the user resize the QDialog

2) In my application, I've a loop that creates <A> objects and give them some data : 1 cycle of loop by e-mail account.
Immediatly, each <A> object will be auto-resized to fit to its content.
My application store the <A> objects in a QList<A> *.

3) I show thoses <A> objects.

4) I want all <A> objects to have the same width.
I look at each one, store the max width, and resize all the <A> objects to the max widt I've found. Like the <A> objects are visible, this works well.

5) I want a best display of my <A> objects : a Windows cascade style is nice .
So I move them, using the setGeometry(int, int, int, int) function. Like the <A> objects are visible, this works well.




Now I would like to do the same job, but the <A> objects would be hidden.
Like they are hidden, the moveEvent() and resizeEvent() are managed by Qt, but the documentation says that :

If the widget is not currently visible, it is guaranteed to receive appropriate events before it is shown.

So, I do the same job, but I don't show the <A> objects.
At the end of the job, after the 5) point, I show them : they have been moved correctly, but not resized ike they should have been...

[Nyphel]

I will simply reuse the showEvent.

Simply holds position and size data in variables.
When I enter the showEvent, if those data aren't equals to 0, I'll use them and set variables to 0.

[wysota]

I would use the sizeHint() to force the dialog to a proper width. If you change the sizeHint() and apply a constraint on the layout of the widget (dialog, in your case), Qt will make sure it is sized properly. Then it doesn't matter if the widget is hidden or not - it'll get resized when needed.

[Nyphel]

Thanks for the tip Wysota, but I'll stay on my showEvent solution. I'm not sure about that the sizeHint will works correctly... Resize should work too, but it doesn't