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How to create a (unique) GUIDa Turn on/off line numbers in source code. Switch to Orginial background IDE or DSP color Comment or reply to this aritlce/tip for discussion. Bookmark this article to my favorite article(s). Print this article
30-Aug-02
Category
System
Language
Delphi 3.x
Views
72
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Publisher:
DSP, Administrator
Reference URL:
DKB
			Tomas Rutkauskas

I'm looking for a function to create a GUID. I don't want to create a COM object or 
something, I just need a sort of 'Session ID' for a special database procedure.

Answer:

1   uses
2     ActiveX;
3   
4   function GenerateKey: string;
5   var
6     MyGUID: TGUID;
7     MyWideChar: array[0..100] of WideChar;
8   begin
9     {First, generate the GUID:}
10    CoCreateGUID(MyGUID);
11    {Now convert it to a wide-character string:}
12    StringFromGUID2(MyGUID, MyWideChar, 39);
13    {Now convert it to a Delphi string:}
14    Result := WideCharToString(MyWideChar);
15    {Get rid of the three dashes that StringFromGUID2() puts in the result string:}
16    while Pos('-', Result) > 0 do
17      Delete(Result, Pos('-', Result), 1);
18    {Get rid of the left and right brackets in the string:}
19    while Pos('{', Result) > 0 do
20      Delete(Result, Pos('{', Result), 1);
21    while Pos('}', Result) > 0 do
22      Delete(Result, Pos('}', Result), 1);
23  end;


			
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