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MAIN.PAS
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Pascal/Delphi Source File
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1998-04-13
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2KB
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71 lines
unit Main;
interface
uses
SysUtils, Windows, Messages, Classes, Graphics, Controls,
Forms, Dialogs, StdCtrls, Buttons;
type
TMainForm = class(TForm)
CheckBox1: TCheckBox;
CheckBox2: TCheckBox;
CheckBox3: TCheckBox;
CheckBox4: TCheckBox;
CheckBox5: TCheckBox;
CheckBox6: TCheckBox;
OnOffButton: TButton;
BitBtn1: TBitBtn;
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
procedure OnOffButtonClick(Sender: TObject);
private
{ Private declarations }
public
{ Public declarations }
end;
var
MainForm: TMainForm;
implementation
{$R *.DFM}
const
numCheckBoxes = 6;
type
PObjectArray = ^TObjectArray;
TObjectArray = array[0..65520 div SizeOf(TObject)] of TObject;
var
CheckBoxArray: PObjectArray; { Pointer to array of CheckBoxes }
procedure TMainForm.FormCreate(Sender: TObject);
begin
GetMem(CheckBoxArray, numCheckBoxes * SizeOf(TObject));
CheckBoxArray^[0] := CheckBox1;
CheckBoxArray^[1] := CheckBox2;
CheckBoxArray^[2] := CheckBox3;
CheckBoxArray^[3] := CheckBox4;
CheckBoxArray^[4] := CheckBox5;
CheckBoxArray^[5] := CheckBox6;
end;
procedure TMainForm.FormDestroy(Sender: TObject);
begin
FreeMem(CheckBoxArray, numCheckBoxes * SizeOf(TObject));
end;
procedure TMainForm.OnOffButtonClick(Sender: TObject);
var
I: Integer;
begin
for I := 0 to numCheckBoxes - 1 do
with CheckBoxArray^[I] as TCheckBox do
Enabled := not Enabled;
end;
end.