There is a BUG in the Parallels clipboard communication with Windows

Discussion in 'Parallels Desktop for Mac Feature Suggestions' started by PeterA23, Aug 7, 2022.

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  1. PeterA23

    PeterA23 Bit Poster

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    I am a Windows software developer. I am running Windows 10 in a Parallels (Version 17.1.4 (51567)) VM in Coherence mode in macOS Monterey 12.0.1.
    In Windows, if an app copies something to the clipboard, Windows dispatches a WM_CLIPBOARDUPDATE message to all windows that have been listed in the system-maintained clipboard format listener list:
    https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-addclipboardformatlistener
    https://docs.microsoft.com/en-us/windows/win32/dataxchg/wm-clipboardupdate
    But if a Mac app copies something to the clipboard, Parallels dispatches the WM_CLIPBOARDUPDATE message to the Windows VM ONLY after the user has focused a Windows app (e.g. by clicking on it)!
    Please fix this bug by dispatching the WM_CLIPBOARDUPDATE message to the Windows VM INSTANTANEOUSLY after a Mac app has copied something to the clipboard! This would be essential for Windows clipboard utilities running in the VM to be instantly notified when a Mac app copies something to the clipboard!
     

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