[Bug]: KCheckedListbox & KListBox do not respect 'disabled' back colours

[PWagner1]

While investigating #371, it was found that KCheckedListbox & KListBox (and possibly other controls) do not respect 'disabled' back colours, opting to use 'normal' colours.

[Smurf-IV]

@Wagnerp Curious, because when set directly it does use the colour from the designer:

I'll see what else I can find

[Smurf-IV]

Currently: I think that the minimal code change to allow the colours to works as expected, will be to change these to be the defaults:

I've got some testing to do !

[Smurf-IV]

BackStyle == Panel is not right, as this is an "Input Control"

[PWagner1]

BackStyle == Panel is not right, as this is an "Input Control"

Is this the same for other affected controls?

[Smurf-IV]

Is this the same for other affected controls?

Yes (And no). e.g. for a textBox: There is no BackStyle, But the whole control is done via:

AND, for a textBox, even tho it has "AlwaysActive" set, it does not override the display state when disabled (Like it does in the ListBox!) Is this a bug with the textBox ?

The Minefield continues.

[Smurf-IV]

Is this the same for other affected controls?

Turns out:
A number of controls being modified will be in the PR

[Smurf-IV]

Fixed...
Before:

After:

Note: ListView(s) will be done in the linked bug