{ 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.