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Integers and Enumerated Types

Posted on 1997-04-19
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Last Modified: 2010-05-18

Does anyone know how to accomplish this?

type
  TMonths = (January, February, March, etc.);

var
  WhichMonth : TMonths;

...

  Form1.Tag := ord(WhichMonth);
 
  {More Code}

  WhichMonth := TMonth(Form1.Tag)  <<== This is the problem

...

How do you get from an integer type to an enumerated type?

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Question by:coppola
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3 Comments
 
LVL 2

Accepted Solution

by:
alona041797 earned 50 total points
ID: 1335536
Your code is correct, except it is TMonths and not TMonth:

This:
  WhichMonth := TMonths(Form1.Tag);
should work.

If this is not the problem please type the error you get.
DO NOT REJECT THIS ANSWER!
0
 
LVL 3

Expert Comment

by:mheacock
ID: 1335537
Ah, reject it...just out of principle...she/he used CAPS, which is akin to her/he shouting at you!!  Heh heh.

But I might want to answer this..... *sigh*
0
 

Author Comment

by:coppola
ID: 1335538
My problem was not a typo. I'm using TMonths as an example. My code is more involved and I thought that this would be easier to follow using months.

The problem persists. The error I get is at compile time:
Incompatible Types integer and TModules

The actual code generating the error is:

  previousModule := currentModule;
  currentModule := constructModuleFromID(TModules(TMenuItem(Sender).Tag));
  if currentModule <> nil then begin
    currentModule.Start;
    previousModule.Free;
    end;

A little more research has led me to believe that this is an order of evaluation problem. If I declare a TModules variable and perform the type conversion before the function call, it works.

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