RFR: 8289539: The color returned by CheckBox.interiorBackground is incorrect

[Tejesh R]

On Mon, 26 Sep 2022 15:18:26 GMT, Jayathirth D V <jdv at openjdk.org> wrote:

>> The color returned for `InteriorBackground` property is the default color used for only _WindowsClassicLookAndFeel_. For _WindowsLookAndFeel_ the `InteriorBackground` color is not been used when checkbox paint happens. In _WindowsLookAndFeel_ the CheckBox check/uncheck is drawn using `ImageCache` which is totally independent of `InteriorBackground` color in which the user expects it to be.
>> The proposed fix is to return null for _WindowsLookAndFeel_ (which is what happens in other LookAndFeel like Metal/Synth/Motif/Aqua ) and return default color which is the actual color used in _WindowsClassicLookAndFeel_.
>
> src/java.desktop/windows/classes/com/sun/java/swing/plaf/windows/WindowsLookAndFeel.java line 661:
> 
>> 659: 
>> 660:             "CheckBox.font", ControlFont,
>> 661:             "CheckBox.interiorBackground", (xp != null)?
> 
> Do we return any color other than the default FFFFFF/null?
> What is the use of "win.frame.backgroundColor" property when we always return table.get("window")?

`win.frame.backgroundColor` is key and value is color set for `window`. Default color is FFFFF/null, when it is set by user the color updates.

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PR: https://git.openjdk.org/jdk/pull/10385