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Former Member

Image transparency in Appeon Web and Mobile

Hi All,

How are people handling the use of transparent PNGs in their Appeon Web and Mobile development?

We are creating some proof of concept apps to come up with some standards, i.e. common header and navigation icons, etc.

We are having a problem using Transparent PNGs on our objects.  I did find some old posts about Image transparency not being supported by Appeon, but these were from 2013.  Has this changed?

When we run our sample app via Powerbuilder on the desktop all the images appear correctly, see below.

When we run in the Appeon Workspace Emulator, our images seem to display everything below them.  Overlapping images are being displayed, even though their visibility is FALSE.  You can also see the Emulator background coming through.

When we run in the browser all the image backgrounds are Black!

Any advice on this would be appreciated.  Are Transparent Images supported yet?  or should we use a different option?

Have attached the Transparent PNGs that we are using.



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2 Answers

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    Former Member
    Oct 21, 2015 at 12:41 PM

    Hi Michael;

    1) Transparency is not supported in standard controls like: Window, Picture, Picture CB, Animation, etc) in Appeon currently.

    2) Transparency is supported by Appeon in the DataWindow.   😉

    Note: The Emulator is not that exact. In fact, I would rank it about  80% accurate (at best).

    Regards ... Chris

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    • Former Member Former Member

      Its also a mixed bag of support BTW. For example:

      1) Animated GIF's work in PB, Appeon Web but not in Appeon Mobile.

      2) The transparency property has no effect in the DW but transparent images work.

      FWIW: Sometimes, I end up layering the effect within the image itself using GIMP in order to have the layered transparent image display properly in all three environments.

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    Former Member
    Oct 24, 2015 at 08:16 AM

    Hi Michael,

    As replied in the ticket #2511 ( in Appeon Support Center):

    Appeon supports the transparent background of the object in the Datawindow object but doesn't support the transparent property of DWO itself and the system controls. And Appeon didn't do any special handling on Mobile, so the difference between Mobile and web is depending on the OS itself.

    And we'll document it in our next release.


    Appeon Support Team

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