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Member DOCUMENT does not evaluate to an object
Message
General information
Forum:
Visual FoxPro
Category:
Coding, syntax & commands
Environment versions
Visual FoxPro:
VFP 9 SP2
OS:
Windows 7
Miscellaneous
Thread ID:
01514050
Message ID:
01514080
Views:
56
Try to check for
TYPE("This.Document") = "O"
>I am using Cesar Chalom's email form & classes contained in his FoxyPreviewer code. Specifically, the class is "pr_htmledit." Periodically it will error with the message: "Member DOCUMENT does not evaluate to an object." The error appears to be occuring at the cie.DownloadComplete method's command...
>
>
This.Document.Body.contentEditable = .T.  && This is a good context menu
>
>I have tried to wrap that command in TYPE commands attempting to issue it only when "this.document.body" is an object type, but no joy.
>
>On workstations, it appears to occur more frequently... as though its a timing issue with the instantiation of the IE control or the Navigate command.
>
>The original INIT code of PR_HTMLEDIT.CIE looks like...
>
>
>* Navigate to a blank page
>
>*This.Navigate2("About:Blank")
>* Prevent an OLE error, and wait until the object
>* gets the blank page open before showing or accessing
>
>LOCAL lnLoadTimeout
>lnLoadTimeout = 6       && seconds
>WITH This.OBJECT
>    .Navigate("about:blank")
>    * Wait for load completion
>    lnStartSeconds = SECONDS()
>    DO WHILE .ReadyState <> 4 ;
>            AND (SECONDS()-lnStartSeconds <= lnLoadTimeout )
>        DOEVENTS
>    ENDDO
>ENDWITH
>
>
>Because i dont see an explicit call to DownloadComplete in the class, I assume that the method is called by the .Navigate method natively.
>
>A template html email file/msg is loaded during the form's INIT using something like the code below, but the reported error does not occur here.
>
>
>IF FILE("&lcHTMLfile")
>    WITH Thisform.Chtmleditor1.oIE
>       .Navigate("&lcHTMLFile")
>        DO WHILE .ReadyState != 4
>            DOEVENTS
>         ENDDO
>        .Document.Body.contentEditable = .T.
>     ENDWITH
>ENDIF		
>
>
>The class's DownloadComplete method which issues the problematic "document.body.contentEditable" command appears to be redundant based on my situation, but i'm wondering if i am moving the problem from one method to another. Plus its hard to produce, but consistant enough to cause headaches.
>
>Any ideas?
--sb--
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