Add color to ui backgroung

**maarvi** · 15th June 2011, 06:17

hello every one i have two questions

1)
i want to ask question regarding the interface designing in Qt creator.
in my inter face there is a LIST BOX few LABELs and a BUTTON. have colored the button its working well but when i tried to color the background by

right click on form -> change style sheet -> add gradient -> apply -> ok

the color changes but when i run the program it unexpectedly finishes. without color its working fine. any help plz

2)
is there a way to change a label color dynamically like if some value is one label color will be read and other wise green

thanks

i can also apply images(screen shots ) if any one want

i will be very thankfull

**Santosh Reddy** · 15th June 2011, 06:37

right click on form -> change style sheet -> add gradient -> apply -> ok

right click on form -> change style sheet -> add gradient -> background-color - apply -> ok, also make sure QtDesigner should show the background color.

is there a way to change a label color dynamically like if some value is one label color will be read and other wise green

you can use setStyleSheet() in run time

**maarvi** · 15th June 2011, 06:42

thank u sir but

in question no 1 i have done this but by setting background will make my program to finish unexpectedly. my list box color dont cause any problem but back color of whole form cause problem

**Santosh Reddy** · 15th June 2011, 06:50

by problem you mean application crash?
Then thumb rule: did you clean the project and compile?
Can you post the style-sheet from the Qt Designer?
Also did you check the stack, if crashing is your problem.

the whole background being black should not be a problem for functionality, it will be very hard to find list box in dark.

**maarvi** · 15th June 2011, 07:13

yes sir my application crashes

i have clean and compile but no use

here the pink color of the the back ground when i remove it i working well but when when i add pink or anyother color its working fine .

**Santosh Reddy** · 15th June 2011, 07:30

not sure what's the reason..., did you try look at the stack

**maarvi** · 15th June 2011, 07:57

yes sir its giving me the error in ui->setupUI(this)

**Santosh Reddy** · 15th June 2011, 08:05

delete the ui_xxxx.h file from the disk, and the build the program, it if does not solve, you have to debug the the ui_xxxx.h file stepping in, and see where it crashes...