Hi,

I'm considering an application that will run on a touchscreen. I made some test-apps, and I think there will be problems with things like scrollbars. Is there a way to make those bigger ? Or is there a way to implement the "swipe" to move items in a list ? The touchscreen is connected to a linux-machine.

Any suggestions ?

Thanks,

Koenraad Lelong

I have some apps that uses touchscreen too (qtlcl), and there's nothing in LCL what can say "Touchscreen app", so I'm using workarounds via command line (--touchscreen), so maybe we should add an property to Application which can give some clue to the widgetset about used device ...

zeljko

AM zeljko wrote

I have some apps that uses touchscreen too (qtlcl), and there's nothing

I do not get touch events with qt lcl embedded (beaglebone), I know about,

  QWidget_SetAttribute(QtHandle, QtWA_AcceptTouchEvents);
  QWidget_setAttribute(QtHandle,QtWA_StaticContents);

apparently it works under Windows (qt lcl again)

so where (OS ?) did you get touch event with qt lcl

I am now looking at all the qt lcl eventfilters, perhaps something there could be the cause, but it is not clear

in a straight fpc qt4 binding program I get touch
events without problems.

Regards,

Jan

Koenraad Lelong wrote

I made some test-apps, and I think there will be problems with things like scrollbars. Is there a way to make those bigger ? Or is there a way to implement the "swipe" to move items in a list ?

I decided to use fpgui for this; because it made it relatively easy to get into the GUI code and make the scrollbars wider.

Another way which I found used by a number of applications (and also by making supermarket cashiers nervous by trying to look at their POS screens) is to hide the scrollbars and have two large buttons alongside, with up/down arrows or forward/back arrows.

Regarding the "swipe", I hadn't thought of it before, but it may be possible to use the mouse scroll events in a touchscreen application, to achieve the same effect.

Malcolm

I didn't say that I'm handling touch events, context was about resized some controls for easy handling with touch screens (scrollbars, buttons, height of list items etc etc).

I'm using only standard mouse events: click/dbl click atm, for more we must go with bindings to at least 4.6 (gestures and other stuff added).

zeljko