Bug 573413 - [GTK4] Eclipse IDE fix errors due to GTK3 only functions

- setBackgroundSurface, remove function calls before version check
- !GTK.GTK4 guard for gtk_widget_get_window call

Change-Id: Ibd3fe33b0f11284935424430c6281eb63615d051
Signed-off-by: Paul D'Pong <sdamrong@redhat.com>
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.swt/+/180327
Tested-by: Platform Bot <platform-bot@eclipse.org>
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>
2 files changed
tree: 5ff6ba7a9b5852cedbf4bc98a7b6b947f5c8eeb8
  1. bundles/
  2. container/
  3. examples/
  4. features/
  5. local-build/
  6. tests/
  7. .gitignore
  8. CONTRIBUTING
  9. LICENSE
  10. NOTICE
  11. pom.xml
  12. README.md
README.md

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