Background color of a list item implemented as Tlist

Question

Hi,
I have one form with 3 blocks each holding one list item. The list item that has the focus should have a different background color from the other 2 list items. I thought to implement this with visual attributes I assign in the when-new-block-instance trigger. This however only partially works.
What happens is the following :
At startup focus is in the first block. This block's when-new-block-instance trigger is fired :
SET_ITEM_PROPERTY('BK_LIST.LIST',VISUAL_ATTRIBUTE ,'VA_INDICATOR');
SET_ITEM_PROPERTY('BK_LIST2.LIST',VISUAL_ATTRIBUTE ,'VA_ENABLED_LIST');
SET_ITEM_PROPERTY('BK_LIST3.LIST',VISUAL_ATTRIBUTE ,'VA_ENABLED_LIST2');
and the list correctly gets it's yellow background. (defined in va_indicator)
Va_enabled_list and va_enabled_list2 both have a white background, difference between them is the font size)
Now when we move focus to the 2nd block we get a different behaviour. This is the trigger defined on the 2nd block :
SET_ITEM_PROPERTY('BK_LIST.LIST',VISUAL_ATTRIBUTE ,'VA_ENABLED_LIST');
SET_ITEM_PROPERTY('BK_LIST2.LIST',VISUAL_ATTRIBUTE ,'VA_INDICATOR');
SET_ITEM_PROPERTY('BK_LIST3.LIST',VISUAL_ATTRIBUTE ,'VA_ENABLED_LIST2');
So I except the first block to get a white background again and the second block to get it's yellow background. However only the selected row in the tlist changes it's background color. (this in both blocks)
I do not understand why the first time (at form startup) the background color is set for the whole item and the second time only for the selected record.
I tried to use the property background_color but the colors are different from what I see in my color palette in that case. If I use the same color codes I also use in my visual_attributes the final result on the screen is different...
Secondly the result is the same, at form startup the item's background is set, as from the second call only the current salected record in the tlist will change from background color.
Forms are running C/S and are developed in Forms 6i. One way to get the result I need is by navigating back & forward to my application in Windows using Alt-Tab. At that moment the correct background colors are suddenly applied... Is there a way to force a similar sort of screen refresh ?
Thanks for any hints, workarounds, tips or solutions !
Kris
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Answer 1

Hi,
I still don't have a clue how I could solve this one.
It works leaving the block (so making it white again) but it does not work entering the block. (giving the list item another background color). The problem is not about the whithe color. If I do my tests with other colors (red-yellow) the problem remains.
Best Regards,
Kris