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MOUSELIB.PAS
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Pascal/Delphi Source File
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(******************************************************************************
* MouseLib *
* second release, written by Loewy Ron, AUG 90 *
* Third release, TP6.0 asm support, LR Jan 91. *
* 4TH release, added functions, LR FEB. 91. *
* 5th release, added intercept & release functions *
******************************************************************************)
unit MouseLib;
interface
uses
dos
;
const
MOUSEINT = $33; {mouse driver interrupt}
LEFTBUTTON = 1; {bit 0}
RIGHTBUTTON = 2; {bit 1}
MIDDLEBUTTON = 4; {bit 2}
CURSOR_LOCATION_CHANGED = 1; {event mask bits}
LEFT_BUTTON_PRESSED = 2;
LEFT_BUTTON_RELEASED = 4;
RIGHT_BUTTON_PRESSED = 8;
RIGHT_BUTTON_RELEASED = 16;
MIDDLE_BUTTON_PRESSED = 32;
MIDDLE_BUTTON_RELEASED = 64;
type
mouseType = (twoButton,threeButton,another);
buttonState = (buttonDown,buttonUp);
direction = (moveRight,moveLeft,moveUp,moveDown,noMove);
grCursorType = record
xH,yH : byte; {x,y Hot Point}
data : pointer; {cursor look pointer}
end;
var
mouse_present : boolean;
mouse_buttons : mouseType;
eventX,eventY,eventButtons : word; {any event handler should update}
eventhappened : Boolean; {these vars to use getLastEvent }
XMotions,YMotions : word; {per 8 pixels}
mouseCursorLevel : integer;
{if > 0 mouse cursor is visiable, otherwise not, containes the level
of showMouseCursor/hideMouseCursor}
const LastMask : word = 0;
lastHandler : pointer = Nil;
{when changing the interrupt handler temporarily, save BEFORE the
change these to variables, and restore them when neccessary}
lastCursor : grCursorType = (
xH : 0;
yH : 0;
data : nil );
{when changing graphic cursor temporarily, save these values BEFORE
the change, and restore when neccessary}
const
click_repeat = 10; { Recommended value for waitForRelease timeOut }
procedure initMouse; {when replacing mouse mode do that..!}
procedure showMouseCursor;
procedure hideMouseCursor;
function getMouseX : word;
function getMouseY : word;
function getButton(Button : Byte) : buttonState;
function buttonPressed : boolean;
procedure setMouseCursor(x,y : word);
function LastXPress(Button : Byte) : word;
function LastYPress(Button : Byte) : word;
function ButtonPresses(Button : Byte) : word; {from last last check}
function LastXRelease(Button : Byte) : word;
function LastYRelease(Button : Byte) : word;
function ButtonReleases(Button : Byte) : word; {from last last check}
procedure mouseBox(left,top,right,bottom : word); {limit mouse rectangle}
procedure graphicMouseCursor(xHotPoint,yHotPoint : byte; dataOfs : pointer);
procedure HardwareTextCursor(fromLine,toLine : byte);
procedure softwareTextCursor(screenMask,cursorMask : word);
function recentXmovement : direction;
function recentYmovement : direction;
procedure setArrowCursor;
procedure setWatchCursor;
procedure setUpArrowCursor;
procedure setLeftArrowCursor;
procedure setCheckMarkCursor;
procedure setPointingHandCursor;
procedure setDiagonalCrossCursor;
procedure setRectangularCrossCursor;
procedure setHourGlassCursor;
procedure setNewWatchCursor;
procedure setEventHandler(mask : word; handler : pointer);
procedure setDefaultHandler(mask : word);
procedure enableLightPenEmulation;
procedure disableLightPenEmulation;
procedure defineSensetivity(x,y : word);
procedure setHideCursorBox(left,top,right,bottom : word);
procedure defineDoubleSpeedTreshHold(treshHold : word);
procedure disableTreshHold;
procedure defaultTreshHold;
procedure setMouseGraph;
procedure resetMouseGraph;
procedure waitForRelease(timeOut : word);
procedure swapEventHandler(mask : word; handler : pointer);
{ return old in lastMask and lastHandler }
function getMouseSaveStateSize : word;
procedure interceptMouse; { get mouse from interrupted program, and stop it .. }
procedure restoreMouse;
(* mouseLib - Release 2 *)
(* *)
(* because of quirks in hercules graphic mode that is not detectable *)
(* by the mouse driver we have to know when we initMouse if we want *)
(* to check for graphic mode or not, if we do we must perform a *)
(* setMouseGraph before initGraph, to initGraph in text mode we must *)
(* resetMouseGraph before.. , if these calling conventions are not *)
(* taken we might have problems in hercules cards! *)
(* *)
(* each call to hideMouseCursor must be balanced by a matching call *)
(* to showMouseCursor, 2 calls to hideMou.. and only 1 to showM.. *)
(* will not show the mouse cursor on the screen! *)
implementation
const watchData : array [0..31] of word =
($E007,$C003,$8001,$0,$0,$0,$0,$0,$0,$0,$0,$0,$0,$8001,$C003,$E007,
$0,$1FF8,$318C,$6186,$4012,$4022,$4042,$718C,$718C,$4062,$4032,
$4002,$6186,$318C,$1FF8,$0);
const arrowData : array [0..31] of word =
($FFFF,$8FFF,$8FFF,$87FF,$83FF,$81FF,$80FF,$807F,$803F,$801F,$800F,
$801F,$807F,$887F,$DC3F,$FC3F,
$0,$0,$2000,$3000,$3800,$3C00,$3E00,$3F00,$3F80,$3FC0,
$3FE0,$3E00,$3300,$2300,$0180,$0180);
const UpArrowCursor : array [0..31] of word =
($f9ff,$f0ff,$e07f,$e07f,$c03f,$c03f,$801f,$801f,
$f,$f,$f0ff,$f0ff,$f0ff,$f0ff,$f0ff,$f0ff,
$0,$600,$f00,$f00,$1f80,$1f80,$3fc0,$3fc0,
$7fe0,$600, $600, $600, $600, $600, $600, $600);
const LeftArrowCursor : array [0..31] of word
= ($fe1f,$f01f,$0, $0, $0, $f01f,$fe1f,$ffff,
$ffff,$ffff,$ffff,$ffff,$ffff,$ffff,$ffff,$ffff,
$0, $c0, $7c0, $7ffe,$7c0, $c0, $0, $0,
$0, $0, $0, $0, $0, $0, $0, $0);
const CheckMarkCursor : array [0..31] of word
= ($fff0,$ffe0,$ffc0,$ff81,$ff03,$607, $f, $1f,
$c03f,$f07f,$ffff,$ffff,$ffff,$ffff,$ffff,$ffff,
$0, $6, $c, $18, $30, $60, $70c0,$1d80,
$700, $0, $0, $0, $0, $0, $0, $0);
const PointingHandCursor : array [0..31] of word
= ($e1ff,$e1ff,$e1ff,$e1ff,$e1ff,$e000,$e000,$e000,
$0, $0, $0, $0, $0, $0, $0, $0,
$1e00,$1200,$1200,$1200,$1200,$13ff,$1249,$1249,
$f249,$9001,$9001,$9001,$8001,$8001,$8001,$ffff);
const DiagonalcrossCursor : array [0..31] of word
= ($7e0, $180, $0, $c003,$f00f,$c003,$0, $180,
$7e0, $ffff,$ffff,$ffff,$ffff,$ffff,$ffff,$ffff,
$0, $700e,$1c38,$660, $3c0, $660, $1c38,$700e,
$0, $0, $0, $0, $0, $0, $0, $0);
const RectangularCrossCursor : array [0..31] of word
= ($fc3f,$fc3f,$fc3f,$0,$0, $0, $fc3f,$fc3f,
$fc3f,$ffff,$ffff,$ffff,$ffff,$ffff,$ffff,$ffff,
$0, $180, $180, $180, $7ffe,$180, $180, $180,
$0, $0, $0, $0, $0, $0, $0, $0);
const HourglassCursor : array [0..31] of word
= ($0, $0, $0, $0, $8001,$c003,$e007,$f00f,
$e007,$c003,$8001,$0, $0, $0, $0, $ffff,
$0, $7ffe,$6006,$300c,$1818,$c30, $660, $3c0,
$660, $c30, $1998,$33cc,$67e6,$7ffe,$0, $0);
const newWatchCursor : array [0..31] of word
= ( $ffff, $c003, $8001, $0, $0, $0, $0, $0, $0,
$0, $0, $0, $0, $8001, $c003, $ffff, $0, $0,
$1ff8, $2004, $4992, $4022, $4042, $518a, $4782,
$4002, $4992, $4002, $2004, $1ff8, $0, $0 );
const mouseGraph : boolean = False; {assume text mode upon entry}
type box = record
left,top,right,bottom : word;
end; {Do not change field order !!!}
var hideBox : box;
var reg : registers; {general registers used}
var grMode,grDrv : integer; {detect graphic mode if any}
grCode : integer; {return initgraph code in here}
var
interceptX, interceptY : word;
(******************************************************************************
* callMouse *
* *
* used to call mouse interrupt with global data reg - used as parameters *
******************************************************************************)
procedure callMouse;
begin
intr(MOUSEINT,REG);
end; {callMouse}
(******************************************************************************
* initMouse *
* For some reason grCode is assigned a value of -11,($FFF5) in the second time*
* we call initmouse after we allready are in graphics mode, override.. was *
* born because of that situation. *
******************************************************************************)
procedure initMouse;
var
overRideDriver : boolean; { true if we over-ridden stupid driver hercules bug }
begin
overRideDriver := false;
if (mouseGraph and (mem[0:$449] = 7)) then begin { assume no mda - hercules }
mem[0:$449] := 6;
overRideDriver := true;
end;
{trick stupid mouse driver to know we are in graphic mode}
with reg do begin
ax:=0; {detect genius mouse}
bx:=0; {be sure what mode we get}
callMouse;
mouse_present := (ax <> 0); {not an iret..}
if ((bx and 2) <> 0)
then mouse_buttons := twoButton
else if ((bx and 3) <> 0)
then mouse_buttons := threeButton
else mouse_buttons := another; {unknown to us}
end; {with}
if (overRideDriver) then
mem[0:$449] := 7;
{restore the stupid situation}
eventX := 0;
eventButtons := 0;
eventY := 0;
eventhappened := False;
XMotions := 8;
YMotions := 16;
mouseCursorLevel := 0; { not visiable, one show to appear }
end; {initMouse}
(******************************************************************************
* showMouseCursor *
******************************************************************************)
procedure showMouseCursor;
begin
reg.ax:=1; {enable cursor display}
callMouse;
inc(mouseCursorLevel);
end; {showMouseCursor}
(******************************************************************************
* hideMouseCursor *
******************************************************************************)
procedure hideMouseCursor;
begin
reg.ax:=2; {disable cursor display}
callMouse;
dec(mouseCursorLevel);
end; {hideMouseCursor}
(******************************************************************************
* getMouseX *
******************************************************************************)
function getMouseX : word;
begin
reg.ax := 3;
callMouse;
getMouseX := reg.cx;
end; {getMouseX}
(******************************************************************************
* getMouseY *
******************************************************************************)
function getMouseY : word;
begin
reg.ax := 3;
callMouse;
getMouseY := reg.dx;
end; {getMouseX}
(******************************************************************************
* getButton *
******************************************************************************)
function getButton(Button : Byte) : buttonState;
begin
reg.ax := 3;
callMouse;
if ((reg.bx and Button) <> 0) then
getButton := buttonDown
{bit 0 = left, 1 = right, 2 = middle}
else getButton := buttonUp;
end; {getButton}
(******************************************************************************
* buttonPressed *
******************************************************************************)
function buttonPressed : boolean;
begin
reg.ax := 3;
callMouse;
if ((reg.bx and 7) <> 0) then
buttonPressed := True
else buttonPressed := False;
end; {buttonPressed}
(******************************************************************************
* setMouseCursor *
******************************************************************************)
procedure setMouseCursor(x,y : word);
begin
with reg do begin
ax := 4;
cx := x;
dx := y; {prepare parameters}
callMouse;
end; {with}
end; {setMouseCursor}
(******************************************************************************
* lastXPress *
******************************************************************************)
function lastXPress(Button : Byte) : word;
begin
reg.ax := 5;
reg.bx := Button;
callMouse;
lastXPress := reg.cx;
end; {lastXpress}
(******************************************************************************
* lastYPress *
******************************************************************************)
function lastYPress(Button : Byte) : word;
begin
reg.ax := 5;
reg.bx := Button;
callMouse;
lastYPress := reg.dx;
end; {lastYpress}
(******************************************************************************
* buttonPresses *
******************************************************************************)
function buttonPresses(Button : Byte) : word; {from last check}
begin
reg.ax := 5;
reg.bx := Button;
callMouse;
buttonPresses := reg.bx;
end; {buttonPresses}
(******************************************************************************
* lastXRelease *
******************************************************************************)
function lastXRelease(Button : Byte) : word;
begin
reg.ax := 6;
reg.bx := Button;
callMouse;
lastXRelease := reg.cx;
end; {lastXRelease}
(******************************************************************************
* lastYRelease *
******************************************************************************)
function lastYRelease(Button : Byte) : word;
begin
reg.ax := 6;
reg.bx := Button;
callMouse;
lastYRelease := reg.dx;
end; {lastYRelease}
(******************************************************************************
* buttonReleases *
******************************************************************************)
function buttonReleases(Button : Byte) : word; {from last check}
begin
reg.ax := 6;
reg.bx := Button;
callMouse;
buttonReleases := reg.bx;
end; {buttonReleases}
(******************************************************************************
* swap *
******************************************************************************)
procedure swap(var a,b : word);
var c : word;
begin
c := a;
a := b;
b := c; {swap a and b}
end; {swap}
(******************************************************************************
* mouseBox *
******************************************************************************)
procedure mouseBox(left,top,right,bottom : word);
begin
if (left > right) then swap(left,right);
if (top > bottom) then swap(top,bottom); {make sure they are ordered}
reg.ax := 7;
reg.cx := left;
reg.dx := right;
callMouse; {set x range}
reg.ax := 8;
reg.cx := top;
reg.dx := bottom;
callMouse; {set y range}
end; {mouseBox}
(******************************************************************************
* graphicMouseCursor *
******************************************************************************)
procedure graphicMouseCursor(xHotPoint,yHotPoint : byte; dataOfs : pointer);
{define 16*16 cursor mask and screen mask, pointed by data,
dataOfs is pointer to data of the masks.}
begin
reg.ax := 9;
reg.bx := xHotPoint;
reg.cx := yHotPoint;
reg.dx := ofs(dataOfs^); {DS:DX point to masks}
reg.es := seg(dataOfs^);
callMouse;
lastCursor.xH := xHotPoint;
lastCursor.yH := yHotPoint;
lastCursor.data := dataOfs;
{save it in lastCursor, if someone needs to change cursor temporary}
end; {graphicMouseCursor}
(******************************************************************************
* HardwareTextCursor *
******************************************************************************)
procedure HardwareTextCursor(fromLine,toLine : byte);
{set text cursor to text, using the scan lines from..to,
same as intr 10 cursor set in bios :
color scan lines 0..7, monochrome 0..13 }
begin
reg.ax := 10;
reg.bx := 1; {hardware text}
reg.cx := fromLine;
reg.dx := toLine;
callMouse;
end; {hardwareTextCursor}
(******************************************************************************
* softwareTextCursor *
******************************************************************************)
procedure softwareTextCursor(screenMask,cursorMask : word);
{ when in this mode the cursor will be achived by ANDing the screen word
with the screen mask (Attr,Char in high,low order) and
XORing the cursor mask, ussually used by putting the screen attr
we want preserved in screen mask (and 0 into screen mask character
byte), and character + attributes we want to set into cursor mask}
begin
reg.ax := 10;
reg.bx := 0; {software cursor}
reg.cx := screenMask;
reg.dx := cursorMask;
callMouse;
end; {softwareMouseCursor}
(******************************************************************************
* recentXmovement *
******************************************************************************)
function recentXmovement : direction;
{from recent call to which direction did we move ?}
var d : integer;
begin
reg.ax := 11;
callMouse;
d := reg.cx;
if (d > 0)
then recentXmovement := moveRight
else if (d < 0)
then recentXmovement := moveLeft
else recentXmovement := noMove;
end; {recentXmovement}
(******************************************************************************
* recentYmovement *
******************************************************************************)
function recentYmovement : direction;
{from recent call to which direction did we move ?}
var
d : integer;
begin
reg.ax := 11;
callMouse;
d := reg.dx;
if (d > 0)
then recentYmovement := moveDown
else if (d < 0)
then recentYmovement := moveUp
else recentYmovement := noMove;
end; {recentYmovement}
(******************************************************************************
* setWatchCursor *
******************************************************************************)
procedure setWatchCursor;
begin
graphicMouseCursor(0,0,@watchData);
end; {setWatchCursor}
(******************************************************************************
* setNewWatchCursor *
******************************************************************************)
procedure setNewWatchCursor;
begin
graphicMouseCursor(0, 0, @newWatchCursor);
end; {setNewWatchCursor}
(******************************************************************************
* setUpArrowCursor *
******************************************************************************)
procedure setUpArrowCursor;
begin
graphicMouseCursor(5, 0, @upArrowCursor);
end; {setUpArrowCursor}
(******************************************************************************
* setLeftArrowCursor *
******************************************************************************)
procedure setLeftArrowCursor;
begin
graphicMouseCursor(0, 3, @leftArrowCursor);
end; {setLeftArrowCursor}
(******************************************************************************
* setCheckMarkCursor *
******************************************************************************)
procedure setCheckMarkCursor;
begin
graphicMouseCursor(6, 7, @checkMarkCursor);
end; {setCheckMarkCursor}
(******************************************************************************
* setPointingHandCursor *
******************************************************************************)
procedure setPointingHandCursor;
begin
graphicMouseCursor(5, 0, @pointingHandCursor);
end; {setPointingHandCursor}
(******************************************************************************
* setDiagonalCrossCursor *
******************************************************************************)
procedure setDiagonalCrossCursor;
begin
graphicMouseCursor(7, 4, @diagonalCrossCursor);
end; {setDiagonalCrossCursor}
(******************************************************************************
* setRectangularCrossCursor *
******************************************************************************)
procedure setRectangularCrossCursor;
begin
graphicMouseCursor(7, 4, @rectangularCrossCursor);
end; {setRectangularCrossCursor}
(******************************************************************************
* setHourGlassCursor *
******************************************************************************)
procedure setHourGlassCursor;
begin
graphicMouseCursor(7, 7, @hourGlassCursor);
end; {setHourGlassCursor}
(******************************************************************************
* setArrowCursor *
******************************************************************************)
procedure setArrowCursor;
begin
graphicMouseCursor(1,1,@arrowData);
end; {setArrowCursor}
(******************************************************************************
* setEventHandler *
******************************************************************************)
procedure setEventHandler(mask : word; handler : pointer);
{handler must be a far interrupt routine }
begin
reg.ax := 12; {set event handler function in mouse driver}
reg.cx := mask;
reg.es := seg(handler^);
reg.dx := ofs(handler^);
callMouse;
lastMask := mask;
lastHandler := handler;
end; {set event Handler}
(******************************************************************************
* defaultHandler *
******************************************************************************)
{$F+} procedure defaultHandler; assembler; {$F-}
asm
push ds; { save TP mouse driver }
mov ax, SEG @data;
mov ds, ax; { ds = TP:ds, not the driver's ds }
mov eventX, cx; { where in the x region did it occur }
mov eventY, dx;
mov eventButtons, bx;
mov eventHappened, 1; { eventHapppened := true }
pop ds; { restore driver's ds }
ret;
end;
{ this is the default event handler , it simulates :
begin
eventX := cx;
eventY := dx;
eventButtons := bx;
eventhappened := True;
end;
}
(******************************************************************************
* GetLastEvent *
******************************************************************************)
function GetLastEvent(var x,y : word;
var left_button,right_button,middle_button : buttonState) : boolean;
begin
getLastEvent := eventhappened; {indicate if any event happened}
eventhappened := False; {clear to next read/event}
x := eventX;
y := eventY;
if ((eventButtons and LEFTBUTTON) <> 0) then
left_button := buttonDown
else left_button := buttonUp;
if ((eventButtons and RIGHTBUTTON) <> 0) then
right_button := buttonDown
else right_button := buttonUp;
if ((eventButtons and MIDDLEBUTTON) <> 0) then
middle_button := buttonDown
else middle_button := buttonUp;
end; {getLastEvent}
(******************************************************************************
* setDefaultHandler *
******************************************************************************)
procedure setDefaultHandler;
{get only event mask, and set event handler to defaultHandler}
begin
setEventHandler(mask,@defaultHandler);
end; {setDefaultHandler}
(******************************************************************************
* enableLightPenEmulation *
******************************************************************************)
procedure enableLightPenEmulation;
begin
reg.ax := 13;
callMouse;
end; {enableLightPenEmulation}
(******************************************************************************
* disableLightPenEmulation *
******************************************************************************)
procedure disableLightPenEmulation;
begin
reg.ax := 14;
callMouse;
end; {disableLightPenEmulation}
(******************************************************************************
* defineSensetivity *
******************************************************************************)
procedure defineSensetivity(x,y : word);
begin
reg.ax := 15;
reg.cx := x; {# of mouse motions to horizontal 8 pixels}
reg.dx := y; {# of mouse motions to vertical 8 pixels}
callMouse;
XMotions := x;
YMotions := y; {update global unit variables}
end; {defineSensetivity}
(******************************************************************************
* setHideCursorBox *
******************************************************************************)
procedure setHideCursorBox(left,top,right,bottom : word);
begin
reg.ax := 16;
reg.es := seg(HideBox);
reg.dx := ofs(HideBox);
HideBox.left := left;
HideBox.right := right;
HideBox.top := top;
HideBox.bottom := bottom;
callMouse;
end; {setHideCursorBox}
(******************************************************************************
* defineDoubleSpeedTreshHold *
******************************************************************************)
procedure defineDoubleSpeedTreshHold(treshHold : word);
begin
reg.ax := 17;
reg.dx := treshHold;
callMouse;
end; {defineDoubleSpeedTreshHold - from what speed to double mouse movement}
(******************************************************************************
* disableTreshHold *
******************************************************************************)
procedure disableTreshHold;
begin
defineDoubleSpeedTreshHold($7FFF);
end; {disableTreshHold}
(******************************************************************************
* defaultTreshHold *
******************************************************************************)
procedure defaultTreshHold;
begin
defineDoubleSpeedTreshHold(64);
end; {defaultTreshHold}
(******************************************************************************
* setMouseGraph *
******************************************************************************)
procedure setMouseGraph;
begin
mouseGraph := True;
end; {setMouseGraph}
(******************************************************************************
* resetMouseGraph *
******************************************************************************)
procedure resetMouseGraph;
begin
mouseGraph := False;
end; {resetMouseGraph}
(********************************************************************************
* waitForRelease *
* Wait until button is release, or timeOut 1/100 seconds pass. (might miss a *
* tenth (1/10) of a second. *
********************************************************************************)
procedure waitForRelease;
var
sHour, sMinute, sSecond, sSec100 : word; { Time at start }
cHour, cMinute, cSecond, cSec100 : word; { Current time }
stopSec : longInt;
currentSec : longInt;
Delta : longInt;
begin
getTime(sHour, sMinute, sSecond, sSec100);
stopSec := (sHour*36000 + sMinute*600 + sSecond*10 + sSec100 + timeOut) mod
(24*360000);
repeat
getTime(cHour, cMinute, cSecond, cSec100);
currentSec := (cHour*36000 + cMinute*600 + cSecond*10 + cSec100);
Delta := currentSec - stopSec;
until (not ButtonPressed) or (Delta >=0) and (Delta < 36000);
end; {waitForRelease}
(******************************************************************************
* swapEventHandler *
* handler is a far routine. *
******************************************************************************)
procedure swapEventHandler;
begin
reg.ax := $14;
reg.cx := mask;
reg.es := seg(handler^);
reg.dx := ofs(handler^);
callMouse;
lastMask := reg.cx;
lastHandler := ptr(reg.es,reg.dx);
end; {swapEventHandler}
(******************************************************************************
* getMouseSaveStateSize *
******************************************************************************)
function getMouseSaveStateSize;
begin
reg.ax := $15;
callMouse;
getMouseSaveStateSize := reg.bx;
end; {getMouseSaveStateSize}
(******************************************************************************
* interceptMouse *
******************************************************************************)
procedure interceptMouse;
begin
with reg do begin
ax := 3;
callMouse; { get place .. }
interceptX := cx;
interceptY := dx;
ax := 31;
callMouse;
end; { disable mouse driver .. }
end; {interceptMouse}
(******************************************************************************
* restoreMouse *
******************************************************************************)
procedure restoreMouse;
begin
with reg do begin
ax := 32; { restore mouse driver .. }
callMouse;
ax := 4;
cx := interceptX;
dx := interceptY;
callMouse;
end; { with .. }
end; {restoreMouse}
var
OldExitProc : pointer;
(******************************************************************************
* MyExitProc *
******************************************************************************)
{$f+}procedure MyExitProc;
begin
ExitProc := OldExitProc;
resetMouseGraph;
initMouse;
end; { myExitProc }
{ if this unit is used with a graphic unit that is loaded and executed after
this unit in the Uses clause, the mouse initialization will not be
correct, be sure to call initMouse in your program start to work
properly }
begin {unit initialization}
eventX := 0;
eventY := 0;
eventHappened := false; { initialize ... }
initMouse; {detect in global variables}
setArrowCursor; {start like that in graphic mode}
OldExitProc := ExitProc;
ExitProc := @MyExitProc;
end. {mouseLib}