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Delphi source code for Miscellaneous >> Know if a key has been pressed


Category: Miscellaneous
Title: Know if a key has been pressed
Author: Damian Cipolat
E-mail: Damian_Cipolat@hotmail.com
Date added: 02.06.2006
Hits: 22552



procedure TForm1.Button1Click(Sender: TObject);
var
  hTaskBar : THandle;
begin
// If you want to detect a letter you must be use the ascii code.

//detect the "a and the A letter".
if GetasyncKeyState(65)<>0 then Caption:='A';

if GetasyncKeyState(97)<>0 then Caption:='a';

// If you want to detect the left button of the mouse use:
if GetasyncKeyState(1)<>0 'mouse
end;

//To detect a hey you must be use the Virtua key codes..

if GetasyncKeyState(vk_space)<>0 then Caption:='Spacebar';

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