Re: Forms45 - Problem with colors

[Quoted] stevec_at_zimmer.csufresno.edu (Steve Cosner) wrote:

> When I use a Windows platform that is running at 256 colors (instead
> of 64K colors), there is a problem setting the background colors on
> text items and display items. These always revert back to one of the
> 16 colors at the top left area of the color pallette. Even the grays
> only use black, white, light gray or dark gray.
>
> I find it really odd that the canvas and boilerplate can use all 228
> of the color settings while the items cannot. This can't be a
> limitation of the Windows platform's 256-color scheme since
> boilerplate works ok.
>
> When you change to a 64k-color display, then all the colors work
> properly. Changing back to the limited display causes a screen to
> look really bad. The QA form I've made available shows gray column
> headings and screen titles because of this problem.
>
> Does anyone know: Is this an Oracle bug, and does Oracle know about
> it? Is there something wrong with the default.pal color pallette file
> that comes with Developer 2000? Is there a remedy for the problem?
>
> I would really appreciate hearing from anyone who might know anything
> about this problem.

This IS a problem with the Windows colorscheme. When the colorscheme is defined in Windows, there are certain fields which can only use 'Solid' colours (i.e. Not colours created by Dithering).

The background to text and display items in FORMS uses one of these fields, so only the solid colours are available for those fields. We have a very similar problem, in that our backgrounds are defined as 'Grey15', which works fine at 64K colours, and works OK for the canvasses at 256 colours, but the display fields at 256 colours come up as Pale Green!

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Alex Heney, Living in the Global Village.