> When a frame is dragged from one screen to another screen, the 
> `GraphicsConfigurations` may vary depending on screen/monitor. However, 
> transparency has to be maintained since it is expected as it is set. So the 
> fix addresses in maintaining the translucency capability when frame is moved 
> from one screen to another screen. For main screen, translucency is set when 
> `setBackground` is called, but for second screen the same is not taken care. 
> Hence setting of Translucency Capable `GC` is taken care when screen switch 
> happens. The fix handles only for non-opaque windows alone retaining the 
> behavior for opaque windows. 
> The fix is verified in CI for regression check, which is Green.

Tejesh R has updated the pull request incrementally with one additional commit 
since the last revision:

  Retained GC null check code

-------------

Changes:
  - all: https://git.openjdk.org/jdk/pull/14246/files
  - new: https://git.openjdk.org/jdk/pull/14246/files/428d0dd8..9cf33603

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk&pr=14246&range=07
 - incr: https://webrevs.openjdk.org/?repo=jdk&pr=14246&range=06-07

  Stats: 7 lines in 1 file changed: 7 ins; 0 del; 0 mod
  Patch: https://git.openjdk.org/jdk/pull/14246.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/14246/head:pull/14246

PR: https://git.openjdk.org/jdk/pull/14246

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