Solved

component count in TCustomPanel

Posted on 1998-12-13
1
270 Views
Last Modified: 2010-08-05
Im busy writing a component and i want to know how many components is in the component(TCustomPanel) at desine time

Here is the program

unit test;

interface

uses
  SysUtils, WinTypes, WinProcs, Messages, Classes, Graphics, Controls,
  Forms, Dialogs, StdCtrls, ExtCtrls,DB, DBTables;

type
  TRPPage = class(TCustomPanel)
  private
    { Private declarations }
  protected
    { Protected declarations }
    procedure Paint; override;
  public
    { Public declarations }
  published
    { Published declarations }
  end;

var
  NComp:integer;

procedure Register;

implementation

procedure Register;
begin
  RegisterComponents('Test', [TRPPage]);
end;

procedure TRPPage.Paint;
var
  Rect: TRect;
  i:integer;
 begin
  Rect := GetClientRect;
  with Canvas do
  begin
    Brush.Color := RGB(255,255,255);
    FillRect(Rect);
    Rectangle(0, 0, Width, Height);
    {Componentcount don't work here}
    canvas.textout(50,50,inttostr(ComponentCount));
  end;
 end;


end.

0
Comment
Question by:delpro
1 Comment
 
LVL 12

Accepted Solution

by:
rwilson032697 earned 50 total points
ID: 1350901
Use ControlCount instead of component count. ControlCount  is the count of child components (ie: component who list this one as their parent. ComponentCount is the count of components owned by the component - in this instance form will own all the components and so component count will be 0.

Cheers,

Raymond.
0

Featured Post

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
proper way to parse url in delphi 2 160
Path  to current project in Delphi. 2 71
How to debug For loops? 3 45
Convert MS Word document to a PDF file 9 59
This article explains how to create forms/units independent of other forms/units object names in a delphi project. Have you ever created a form for user input in a Delphi project and then had the need to have that same form in a other Delphi proj…
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…
With Secure Portal Encryption, the recipient is sent a link to their email address directing them to the email laundry delivery page. From there, the recipient will be required to enter a user name and password to enter the page. Once the recipient …
The Email Laundry PDF encryption service allows companies to send confidential encrypted  emails to anybody. The PDF document can also contain attachments that are embedded in the encrypted PDF. The password is randomly generated by The Email Laundr…

947 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

Need Help in Real-Time?

Connect with top rated Experts

20 Experts available now in Live!

Get 1:1 Help Now