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{
This file is part of the PTCPas framebuffer library
Copyright (C) 2001-2010 Nikolay Nikolov (nickysn@users.sourceforge.net)
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
with the following modification:
As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent modules,and
to copy and distribute the resulting executable under terms of your choice,
provided that you also meet, for each linked independent module, the terms
and conditions of the license of that module. An independent module is a
module which is not derived from or based on this library. If you modify
this library, you may extend this exception to your version of the library,
but you are not obligated to do so. If you do not wish to do so, delete this
exception statement from your 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
}
unit mouse33h;
{$MODE objfpc}
interface
procedure InitMouse;
procedure ShowCursor;
procedure HideCursor;
procedure ReadMouse(Out X, Y: Integer; Out Left, Right, Middle: Boolean);
procedure MoveMouseTo(const X, Y: Integer);
procedure SetHCursorRange(const MinX, MaxX: Integer);
procedure SetVCursorRange(const MinY, MaxY: Integer);
procedure SetCursorRange(const MinX, MinY, MaxX, MaxY: Integer);
var
MousePresent: Boolean = False;
implementation
uses
go32fix;
procedure InitMouse;
var
RealRegs: TRealRegs;
begin
{ todo: check if INT 33 vector is neither 0000h:0000h nor points at an IRET instruction (BYTE CFh) }
RealRegs.AX := $0000;
realintr($33, RealRegs);
MousePresent := RealRegs.AX = $FFFF;
if MousePresent then
begin
{ RealRegs.BX is number of buttons:
according to ralf brown's interrupts list
0000h other than two
0002h two buttons (many drivers)
0003h Mouse Systems/Logitech three-button mouse
FFFFh two buttons }
{ ... }
end;
end;
procedure ShowCursor;
var
RealRegs: TRealRegs;
begin
Assert(MousePresent);
RealRegs.AX := $0001;
realintr($33, RealRegs);
end;
procedure HideCursor;
var
RealRegs: TRealRegs;
begin
Assert(MousePresent);
RealRegs.AX := $0002;
realintr($33, RealRegs);
end;
procedure ReadMouse(Out X, Y: Integer; Out Left, Right, Middle: Boolean);
var
RealRegs: TRealRegs;
begin
Assert(MousePresent);
RealRegs.AX := $0003;
realintr($33, RealRegs);
X := RealRegs.CX;
Y := RealRegs.DX;
Left := RealRegs.BX and 1 <> 0;
Right := RealRegs.BX and 2 <> 0;
Middle := RealRegs.BX and 4 <> 0;
end;
procedure MoveMouseTo(const X, Y: Integer);
var
RealRegs: TRealRegs;
begin
Assert(MousePresent);
RealRegs.AX := $0004;
RealRegs.CX := X;
RealRegs.DX := Y;
realintr($33, RealRegs);
end;
procedure SetHCursorRange(const MinX, MaxX: Integer);
var
RealRegs: TRealRegs;
begin
Assert(MousePresent);
Assert(MinX <= MaxX);
RealRegs.AX := $0007;
RealRegs.CX := MinX;
RealRegs.DX := MaxX;
realintr($33, RealRegs);
end;
procedure SetVCursorRange(const MinY, MaxY: Integer);
var
RealRegs: TRealRegs;
begin
Assert(MousePresent);
Assert(MinY <= MaxY);
RealRegs.AX := $0008;
RealRegs.CX := MinY;
RealRegs.DX := MaxY;
realintr($33, RealRegs);
end;
procedure SetCursorRange(const MinX, MinY, MaxX, MaxY: Integer);
begin
SetHCursorRange(MinX, MaxX);
SetVCursorRange(MinY, MaxY);
end;
end.
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