how to set specified homescreen wallpaper on maemo 5

**denniswang** · 2010-03-11, 06:27

i want to design a app that image viewer, it can be able to set the viewing image to specified homescreen wallpaper, how to do that?
the platform is maemo 5(N900) and i will use QT to develop it.

**divanov** · 2010-03-11, 11:24

You should save images' uris to the following GConf keys:
/apps/osso/hildon-desktop/views/N/bg-image
where N is a number of the desktop from 1 to 4 by default.
Current active desktop number is saved in this GConf key:
/apps/osso/hildon-desktop/views/current
and list of active desktops (as hardcoding 1-4 is not probably a good idea)
/apps/osso/hildon-desktop/views/active

Useful link:
http://linux.die.net/man/1/gconftool-2

**fily_love** · 2010-03-25, 02:45

Originally Posted by divanov

You should save images' uris to the following GConf keys:
/apps/osso/hildon-desktop/views/N/bg-image
where N is a number of the desktop from 1 to 4 by default.
Current active desktop number is saved in this GConf key:
/apps/osso/hildon-desktop/views/current
and list of active desktops (as hardcoding 1-4 is not probably a good idea)
/apps/osso/hildon-desktop/views/active

Useful link:
http://linux.die.net/man/1/gconftool-2

i found "hildon-desktop" file path in scratchbox , but i counldn't found the next file folder "views".
my file path was [sbox-FREMANTLE_X86: /etc/hildon-desktop] >
does it right??
thank you for give me a long time help..

**divanov** · 2010-03-25, 08:51

GConf keys have nothing to do with filesystem

Code:

$run-standalone.sh gconftool-2 -R /apps/osso/hildon-desktop/views
 current = 3
 active = [1,2,3,4]

**fily_love** · 2010-03-25, 12:57

Originally Posted by divanov

GConf keys have nothing to do with filesystem

Code:

$run-standalone.sh gconftool-2 -R /apps/osso/hildon-desktop/views
 current = 3
 active = [1,2,3,4]

sorry ,i am a little stupid,
i want to set a image to background of screen, and how could i coding it??

**divanov** · 2010-03-25, 13:19

Originally Posted by fily_love

sorry ,i am a little stupid,
i want to set a image to background of screen, and how could i coding it??

You can use libgconf2-6 to access and alter GConf keys. Here is a documentation:
http://library.gnome.org/devel/gconf/stable/

**ftball** · 2010-03-30, 07:07

Originally Posted by divanov

You can use libgconf2-6 to access and alter GConf keys. Here is a documentation:
http://library.gnome.org/devel/gconf/stable/

hi , everybody, I am a new guy for develop qt on maemo, and I also want to write for this feature. I read for this talk, but still not very clearly for how to coding. Could these superiores can tell me more clarity to set background image ??

thank you!

**divanov** · 2010-03-30, 08:45

Originally Posted by ftball

hi , everybody, I am a new guy for develop qt on maemo, and I also want to write for this feature. I read for this talk, but still not very clearly for how to coding. Could these superiores can tell me more clarity to set background image ??

thank you!

There are some small example applications showing how to access GConf keys
http://people.gnome.org/~newren/tuto.../html/apd.html

**fily_love** · 2010-03-31, 07:11

Originally Posted by divanov

There are some small example applications showing how to access GConf keys
http://people.gnome.org/~newren/tuto.../html/apd.html

thanks !! so difficult!

**divanov** · 2010-03-31, 18:02

Originally Posted by fily_love

thanks !! so difficult!

Cannot agree with you
http://wiki.forum.nokia.com/index.ph...per_in_Maemo_5

**fily_love** · 2010-04-01, 09:08

[QUOTE=divanov;720547]Cannot agree with you
http://wiki.forum.nokia.com/index.ph...per_in_Maemo_5[/QUOTE

divanov, if you are in China ,i will treat you for dinner!!
so nice man!

**divanov** · 2010-04-01, 09:30

You are welcome. I'm not really located in China.

**denniswang** · 2010-04-06, 08:48

Originally Posted by divanov

You are welcome. I'm not really located in China.

hi divanov, i have some problem with the setWallpaper() function, what is the parameter of that function. the first one is my wallpaper path what i want, the second one is return ID in the getXIntProperty() function. but it doesn't work, the problem is the return value of gconf_client_set_string(), maybe the parameter is wrong when call that.

**divanov** · 2010-04-06, 09:01

Originally Posted by denniswang

hi divanov, i have some problem with the setWallpaper() function, what is the parameter of that function. the first one is my wallpaper path what i want, the second one is return ID in the getXIntProperty() function. but it doesn't work, the problem is the return value of gconf_client_set_string(), maybe the parameter is wrong when call that.

And what is a content of gconf_client_set_string error message?

**denniswang** · 2010-04-06, 09:14

Originally Posted by divanov

And what is a content of gconf_client_set_string error message?

the error is "segmentation fault"

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