styling a combo box.

[maxelcat]

Hi

I have an instance on the stage of a combo box called cb1 I want to alter the formatting of it. I have gone into the library and copied the ComboBox_upSkin mc and called it upSkinBlue, set its class to upSkinBlue, exported it for action script.

Here's my complete action script:

import fl.controls.ComboBox;
cb1.setStyle("upSkin","upSkinBlue");
cb1.addItem({label:"Apples"});
cb1.addItem({label:"Oranges"});
cb1.addItem({label:"Banana"});
cb2.addItem({label:"Spinach"});
cb2.addItem({label:"Salad"});
cb2.addItem({label:"Cucumber"});

When I run I get

TypeError: Error #2007: Parameter child must be non-null.
	at flash.display::DisplayObjectContainer/addChildAt()
	at fl.controls::BaseButton/drawBackground()
	at fl.controls::BaseButton/draw()
	at fl.core::UIComponent/drawNow()
	at fl.controls::ComboBox/drawLayout()
	at fl.controls::ComboBox/draw()
	at fl.core::UIComponent/callLaterDispatcher()

I guess I am doing something wrong, but can't work out what. If you're interested I a using a tutorial here - scroll down to "Changing AS3 component styles with AS.

Any pointers very greatfully received

[cancerinform]

Are you sure you did not delete the button? You would get such error message. Click on the combobox on the stage and check it.

[maxelcat]

Hi

Thanks for the reply. I checked, and it looks like the button is still there.

Also, if I comment out the line thus:

//cb1.setStyle("upSkin","upSkinBlue");

the drop down works fine.
I have put an image in of my library and symbol properties in case I have missed something there.

Thanks again

E

[cancerinform]

I am not sure what the problem is, so I have included a fla at the end of the blog, which you can download:

http://flashscript.biz/flblogger/?cat=5

[maxelcat]

thanks for the reply

Downloaded your fla and made my own using yours - works now