Alexandre Julliard pushed to branch master at wine / wine

Commits:

• b04de9af
  by Aaron Yourk at 2026-05-19T23:19:09+02:00

  ole32/tests: Add test for OLE clipboard reuse across STA threads.
  
  Test that OleSetClipboard succeeds when called from a second STA
  thread after the first thread (which created the cached clipboard
  window) has exited. Currently this fails because the stale window
  handle is never invalidated. Based on the bug reproducer source.
  
  Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=59519
  

• 32bffb77
  by Aaron Yourk at 2026-05-19T23:19:09+02:00

  ole32: Validate cached clipboard window handle in get_clipbrd_window.
  
  The OLE clipboard caches a per-process window handle. When the STA
  thread that created this window terminates, the window is destroyed
  but the stale handle remains cached. Subsequent OleSetClipboard
  calls use this stale handle, causing OpenClipboard to fail with
  CLIPBRD_E_CANT_OPEN.
  
  Check whether the cached window is still valid using IsWindow()
  before returning it. If the window has been destroyed, clear the
  cache so a fresh window is created on the current thread.
  
  Wine-Bug: https://bugs.winehq.org/show_bug.cgi?id=59519
  

2 changed files:

• dlls/ole32/clipboard.c
• dlls/ole32/tests/clipboard.c