[jdk11u] RFR: 8348760: RadioButton is not shown if JRadioButtonMenuItem is rendered with ImageIcon in WindowsLookAndFeel

[Antonio Vieiro]

On Wed, 10 Sep 2025 09:40:29 GMT, Antonio Vieiro <avieiro at openjdk.org> wrote:

> Backport of [JDK-8348760](https://bugs.openjdk.org/browse/JDK-8348760)  (P1 - CPU25_10-critical-approved) that properly renders `JRadioButtonMenuItem`s with `ImageIcon`s in the Windows Look and Feel. 
> 
> Mostly clean but for copyright issues, also the multi-line string in `test/jdk/javax/swing/JMenuItem/TestRadioAndCheckMenuItemWithIcon.java` was replaced with string concatenation.
> 
> The issue is reproducible in OpenJDK 11 with the Windows Look and Feel on Windows 11.
> 
> - Passes `tier1` tests on all platforms.
> - Passes the new (manual) test on Windows 11/x86_64 (24H2/26100.6584)
> - SwingSet2 looks normal (tested with Windows Look And Feel and the Windows Classic Look and Feel)
> 
> NOTE: Related issues [JDK-8365375](https://bugs.openjdk.org/browse/JDK-8365375), [JDK-8365389](https://bugs.openjdk.org/browse/JDK-8365389)  and [JDK-8365625](https://bugs.openjdk.org/browse/JDK-8365625) (all P3) will also need to be backported.

Test failures in `macos-x64/tier1` are unrelated (JDI timeouts).

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PR Comment: https://git.openjdk.org/jdk11u/pull/104#issuecomment-3274879712