How to deploy?

**aash_89** · 26th July 2010, 04:25

Thank you for your reply.
I understand i was wrong initially.
After a bit of searching aroung i realized that the easier way to do it, is to just use the release option and put the necessary dll files!!
before which i tried to build Qt statically, and it was too complicated and went horribly wrong, i had to reinstall Qt!!!

I have my application up and running!! Its nice to have replies like yours because its very encouraging.

I have this problem now.

I am displaying images on my Qt application, on my system which has Qt it works fine, but when i use in on other systems, it does not display jpeg images!

after a bit of searching i found that, i needed to create a folder imageformats in the current directory and include the qjpeg4.dll in it.

but its still not displaying the jpeg images.

any ideas?

Thankx
Aashish

**Lykurg** · 26th July 2010, 06:23

Then your plugin is still not at the right position. When I remember right, the folder imageformats also have to be in a folder called plugins or you set a custom plugin path in your application.

**aash_89** · 26th July 2010, 06:30

The forlder imageformats is in qt\bin.

there is nothing mentioned about plugins.

in my project file, i tried QTPLUGINS += qjpeg.

the QTPLUGINS did not highlight, nor did doing this have the images displayed.

**Lykurg** · 26th July 2010, 07:03

Originally Posted by aash_89

The folder imageformats is in qt\bin.

Not on my machine, and you never know what extra paths Qt sets internally. But you have to create the directory plugins for your application, unless you set a custom path.

there is nothing mentioned about plugins.

There is: /path/to/Qt/qt/plugins. You probably using the wrong libraries. You have to take the libraries from the subdirectory qt! The bin in the root directory is only for creator.

See http://doc.trolltech.com/4.6/deployment-windows.html!

in my project file, i tried QTPLUGINS += qjpeg.

the QTPLUGINS did not highlight, nor did doing this have the images displayed.

It is called QTPLUGIN and it is only for static plugins. So you don't need it.

**aash_89** · 26th July 2010, 07:32

Thank you!!!
That was the mistake i was doing.
I was taking it from bin.

Now i copied it from the qt sub folder it works! Thank you!

In this was of including dynamic libraries, is it possible to have it work on other OS too?

what is the advantage of building qt statically and then doing the deployment?