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{
Free Pascal port of the OpenPTC C++ library.
Copyright (C) 2001-2003 Nikolay Nikolov (nickysn@users.sourceforge.net)
Original C++ version by Glenn Fiedler (ptc@gaffer.org)
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
}
Constructor TPTCBaseConsole.Create;
Begin
FReleaseEnabled := False;
End;
Function TPTCBaseConsole.KeyPressed : Boolean;
Var
k, kpeek : TPTCEvent;
Begin
k := Nil;
Try
Repeat
kpeek := PeekEvent(False, [PTCKeyEvent]);
If kpeek = Nil Then
Exit(False);
If FReleaseEnabled Or (kpeek As TPTCKeyEvent).Press Then
Exit(True);
NextEvent(k, False, [PTCKeyEvent]);
Until False;
Finally
k.Free;
End;
End;
Procedure TPTCBaseConsole.ReadKey(Var AKey : TPTCKeyEvent);
Var
ev : TPTCEvent;
Begin
ev := AKey;
Try
Repeat
NextEvent(ev, True, [PTCKeyEvent]);
Until FReleaseEnabled Or (ev As TPTCKeyEvent).Press;
Finally
AKey := ev As TPTCKeyEvent;
End;
End;
Function TPTCBaseConsole.PeekKey(Var AKey : TPTCKeyEvent) : Boolean;
Begin
If KeyPressed Then
Begin
ReadKey(AKey);
Result := True;
End
Else
Result := False;
End;
Procedure TPTCBaseConsole.ReadKey;
Var
k : TPTCKeyEvent;
Begin
k := TPTCKeyEvent.Create;
Try
ReadKey(k);
Finally
k.Free;
End;
End;
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