Solved

Pass pointers as parameters.

Posted on 2002-04-02
2
152 Views
Last Modified: 2010-04-04
Hi again experts!

I want to make a function which executes an SQL sentence on any existing TQuery component. I'm attempting to pass a pointer to the TQuery object as a parameter, but the compiler gives me an error at the function prototype:
"Identifier expected but '^' found".
Here is the code:

type
 TServeis = class(TObject)
 private
  { Private declarations }
  prova: ^TQuery; //this line compiles correctly
 public
  function BDEToStringList(Sentencia,Camp: String;var Llista: TStringList): Boolean;
  function Cerca(Sentencia,Camp: String):Variant;
  function ManipulaQ(Sentencia: TStrings;PQ: ^Integer):Integer; //error
  function ConsultaQ(Sentencia: TStrings;PQ: ^TQuery):Integer; //error
 end;

Any ideas are welcome! Thank you!
0
Comment
Question by:Kurtis
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
2 Comments
 
LVL 27

Accepted Solution

by:
kretzschmar earned 75 total points
ID: 6913554
as every tobject is a pointer to itself,
you don't need the ^-sign

type
TServeis = class(TObject)
private
 { Private declarations }
 prova: TQuery; //this line compiles correctly
public
 function BDEToStringList(Sentencia,Camp: String;var Llista: TStringList): Boolean;
 function Cerca(Sentencia,Camp: String):Variant;
 function ManipulaQ(Sentencia: TStrings;PQ: ^Integer):Integer; //don't know for what this may be
 function ConsultaQ(Sentencia: TStrings;PQ:  TQuery):Integer; //error
end;

meikl ;-)
0
 

Author Comment

by:Kurtis
ID: 6913587
It was pretty simple.
Thanks kretzschmar!
0

Featured Post

Get HTML5 Certified

Want to be a web developer? You'll need to know HTML. Prepare for HTML5 certification by enrolling in July's Course of the Month! It's free for Premium Members, Team Accounts, and Qualified Experts.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction The parallel port is a very commonly known port, it was widely used to connect a printer to the PC, if you look at the back of your computer, for those who don't have newer computers, there will be a port with 25 pins and a small print…
Creating an auto free TStringList The TStringList is a basic and frequently used object in Delphi. On many occasions, you may want to create a temporary list, process some items in the list and be done with the list. In such cases, you have to…
Add bar graphs to Access queries using Unicode block characters. Graphs appear on every record in the color you want. Give life to numbers. Hopes this gives you ideas on visualizing your data in new ways ~ Create a calculated field in a query: …
In this video you will find out how to export Office 365 mailboxes using the built in eDiscovery tool. Bear in mind that although this method might be useful in some cases, using PST files as Office 365 backup is troublesome in a long run (more on t…
Suggested Courses
Course of the Month9 days, 20 hours left to enroll

624 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question