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Bug Report T1062787
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cxFontNameComboBox - An AV occurs when an editor whose font's list-related properties are stored in a DFM file is destroyed before the background font enumeration completion handler is called

created 3 years ago

When running the attached sample program an exception will be thrown in TcxSystemFontLoader's CompleteHandler. A single listener will be in the list that still points to an already freed TcxFontNameComboBox completion handler.

TcxFontNameComboBox registers two notification links during it's construction from the dfm, the second one when the FontTypes property is assigned. (A non default value has been set in the form designer)

During the destruction of TcxFontNameComboBox only the first notification link is removed, the second one is kept and will cause an access violation the next time the handler is invoked.

Comments (1)
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Alex Pa (DevExpress Support) 3 years ago

    Hello Steffen,

    Thank you for reporting the issue. It will take us some time to examine the cause of this exception.

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    Answers approved by DevExpress Support

    created 3 years ago

    We have addressed the issue described in this ticket and will include a fix in our next maintenance update. Should you need to apply our fix prior to official release, you can request a hotfix here.

    Important Notes:

    • Hotfixes may be unavailable for Early Access/Beta builds or updates set for release within a week.
    • .NET only: in the NuGet Package Manager, use your personal NuGet feed and check the "Include prerelease" option to view the hotfix package in the "Updates" tab.
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