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  1. #1
    Join Date
    Dec 2003
    Hong Kong

    Question Unanswered: Delphi problem: What does that means?

    I'm developing a software that connecets to a MySQL database with Delphi 7. It raises when I'm trying to run the program. What does that means and how can I deal with that??
    Attached Thumbnails Attached Thumbnails error.PNG  
    Last edited by liuchoi; 08-09-04 at 11:09.

  2. #2
    Join Date
    Mar 2004

    What does that means

    It means you have assigned a primary key to more than one field. Use only one primary key and run you application.


  3. #3
    Join Date
    Oct 2003
    When the program stops, look at which statement it stopped at. What was it doing, or trying to do, then?

    I find it very helpful to browse the VCL source-code to look for that actual message -- it will be a constant -- then look for occurrences of that constant. Some messages are cryptic, but they were generated by the VCL somewhere and you can read that code. Very, very helpful.

    Sometimes you can stop the program right before the statement that you know will cause the error, then "step into" it and actually watch the execution flow through the VCL until the point where the error is raised.
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