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	hopbeat	2009-11-12 , 11:17
	Posts: 516 \| Thanked: 643 times \| Joined on Oct 2009 @ Denmark/Poland	#1

Hello,

I'm using Qt with C++ for Maemo 5.

I would like to make similar effect as in, for example, contacts app: after clicking a button (contact), new pane appears (slides in) and the close button (right corner) changes to back button.

Is it possible to do with Qt? If yes, what is the architecture of the panes?

Any references or examples would be appreciated.

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	pelago	2009-11-12 , 11:57
	Posts: 2,121 \| Thanked: 1,540 times \| Joined on Mar 2008 @ Oxford, UK	#2

I believe in Maemo these are called "stacked windows". I don't know how to do this, but I've seen a video a couple of weeks ago demonstrating stacked windows in a Maemo 5 Qt app, so it must be possible.

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conny	2009-11-12 , 12:24
Posts: 654 \| Thanked: 664 times \| Joined on Feb 2009 @ Germany	#3

I think you should use the new "technology preview" Qt packages:
http://qt.nokia.com/developer/qt-for-maemo-developers
http://maemo.org/packages/view/libqt4-maemo5-dev

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attila77	2009-11-12 , 12:25
Posts: 3,319 \| Thanked: 5,610 times \| Joined on Aug 2008 @ Finland	#4

I believe it is done automatically if you set the original QMainWindow as the parent to a new window, but I have not yet used it so take this with a grain of salt.

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conny	2009-11-12 , 12:30
Posts: 654 \| Thanked: 664 times \| Joined on Feb 2009 @ Germany	#5

Also have a look here:
http://wiki.maemo.org/Qt4_Hildon/Qt_Hildon_Widgets

Those panes are originally called "HildonStackableWindows", not sure how to exactly use that with Qt. But from the wiki pages it looks like it´s possible...

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	hopbeat	2009-11-12 , 13:00
	Posts: 516 \| Thanked: 643 times \| Joined on Oct 2009 @ Denmark/Poland	#6

Thanks for all those answers.

I have found this:
http://qt.gitorious.org/+qt-maemo-de...7137ce63afe602

so I will give it a try.

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timoph	2009-11-12 , 13:10
Posts: 415 \| Thanked: 732 times \| Joined on Jan 2009 @ Finland	#7

there's QStackedLayout in Qt but i'm not sure if it shows the transition animations. I haven't tried it with Fremantle.

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	hopbeat	2009-11-12 , 13:16
	Posts: 516 \| Thanked: 643 times \| Joined on Oct 2009 @ Denmark/Poland	#8

This works:

Code:

QApplication app(argc, argv);
QMainWindow* window=new QMainWindow();
window->setCentralWidget(someWidget);
              
 window->show();

QMainWindow* window2=new QMainWindow(window);
window2->show();

To create a stack window, we just need to pass another QMainWindow in constructor.
When we call window2->show() we will see transition effect.
window2 will be destroyed after pressing back button.

Thanks for your help

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Last edited by hopbeat; 2009-11-12 at 13:22.

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danielwilms	2009-11-13 , 12:49
Posts: 432 \| Thanked: 645 times \| Joined on Mar 2009	#9

Hi,

I've added some information to the Developer FAQ about Qt. Some Maemo-specific links where to find documentation.

Cheers Daniel

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	krk969	2010-01-13 , 08:46
	Posts: 754 \| Thanked: 630 times \| Joined on Sep 2009 @ London	#10

Originally Posted by hopbeat

This works:
Code:
QApplication app(argc, argv);
QMainWindow* window=new QMainWindow();
window->setCentralWidget(someWidget);
              
 window->show();

QMainWindow* window2=new QMainWindow(window);
window2->show();
To create a stack window, we just need to pass another QMainWindow in constructor.
When we call window2->show() we will see transition effect.
window2 will be destroyed after pressing back button.

Thanks for your help

need to do this as well to get the back button on the top right hand corner instead of the cross to make it truly stacked

wiki updated.

Code:

secondStackableWindow->setAttribute(Qt::WA_Maemo5StackedWindow);

cheers

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