[Interest] considerations for developing handset applications
cmakshin at gmail.com
Wed Mar 14 15:18:06 CET 2012
My advice is to put child widgets into a QScrollArea as handset screens are
not only smaller than their desktop counterparts, but resolutions tend to
vary a lot. Consider this and the fact that widgets on mobile devices are
usually large to be more usable without any special devices like stylus,
and it becomes clear that you can easily run out of available screen space.
QScrollArea solves that problem by allowing the user to scroll the window
to find the required widget. Of course, this advice applies primarily to
configuration dialogs or other similar windows with relatively large amount
Another suggestion is to put not-so-often-used features into secondary
windows because low screen resolution doesn't allow creating extensive
menus and limited input capabilities (e.g. lack of physical keyboard on
most devices) make keyboard shortcuts inconvenient or completely useless.
On Mar 14, 2012 5:12 PM, "Sivan Greenberg" <sivan at omniqueue.com> wrote:
> Hi All,
> I recently tried to come up with a list of consideration one must
> make when developing apps for the handset using Qt. I was able to come
> up with some:
> 1. Be very sparse on your memory usage; Use data structures and
> algorithms that use the least memory possible.
> 2. CPU cycles are not for free; Make sure you do things efficiently
> and try to avoid hogging the CPU when waiting for IO.
> 3. Network bandwith usage should be gentle, as users might not have an
> unlimited data plan.
> I know others will involve the graphic system, screen sizes,
> resolutions, form factors etc but am not sure how to articulate and
> what are the trade offs. Anybody, if you can, I'd appreciate help
> creating this list with as many items needed and different trade offs.
> I intend to post it on the wiki once done. I'm interested in
> particular areas as well where Qt makes it easier and smoother to
> integrate those considerations into one's mobile dev endeavors.
> Interest mailing list
> Interest at qt-project.org
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