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  • Users: rbow
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  1. rbow

    testing object variable

    Thanks the answers! I workaround the problem with reorganizing the code. rbow
  2. rbow

    testing object variable

    Hi, Thanks for the answer! I've tried your suggestion, but it didn't work. Here is my code: var a1 , a2: TObject; begin a1 := TObject.Create; a2 := a1; FreeAndNil(a1); if Assigned(a2) then ShowMessage('Error!') else ShowMessage('OK'); end; I gave the 'Error!' message...
  3. rbow

    testing object variable

    Hi, I have two object variables (a1, a2: TObject) referencing to the same object instance. There is a chance in the program flow (depends on a condition) when the object instance has to destroyed (FreeAndNil(a1)). Later how can I test the a2 variable, whether it references a valid object...
  4. rbow

    OLAP features of Crystal Reports 9

    hi, I have to develop an application containing a grid, which acts like an OLAP grid, but based on relational data. Does anybody know that the cross-tab report or the OLAP report of the CR 9 is suitable for the task? (I only saw the CR 7, but it isn't good for me.) thanks, rbow

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