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component count in TCustomPanel

Posted on 1998-12-13
1
278 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
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Question by:delpro
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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

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