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How i check if CTRL key is pressed when i click on a Button?

Posted on 2004-08-16
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Last Modified: 2010-04-05

I´d like to check if CTRL key is pressed when i click on a Button. Do you know how i implement this?

Best Regards.
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Question by:joelsilva
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2 Comments
 
LVL 3

Accepted Solution

by:
Tyrsis earned 100 total points
ID: 11817575
Here you go:

unit Unit1;

interface

uses
  Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
  Dialogs, StdCtrls;

type
  TForm1 = class(TForm)
    Button1: TButton;
    Memo1: TMemo;
    procedure Button1Click(Sender: TObject);
  private
    { Private declarations }
  public
    { Public declarations }
  end;

var
  Form1: TForm1;

implementation

{$R *.dfm}

procedure TForm1.Button1Click(Sender: TObject);
var
    iState : SmallInt;
begin
    if(GetKeyState(VK_CONTROL) < 0) then
    begin
        Memo1.Lines.Add('Control Key Pressed');
    end
    else
    begin
        Memo1.Lines.Add('Control Key NOT Pressed');
    end;
end;

end.
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Author Comment

by:joelsilva
ID: 11817601
Thanks very much... I appreciate so much your answer.
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