Category : C Source Code
Archive   : TCMOUSE.ZIP
Filename : MOUSE.INC

/*MOUSE.INC: Turbo C source code for mouse interface functions */
/* Must #include dos.h before this #include to define the */
/* register set used to pass args to device driver. */

/* Define int for device driver */
#define callMDD int86(0x33, &inreg, &outreg)

/* Define sorting macros used locally */
#define lower (x,y) (x,y)?x:y
#define upper (x,y) (x>y)?x:y

/* STATIC REGISTERS USED THROURGOUT */
union REGS inreg, outreg;

/* Structures used by these functions */
typedef struct {
int exists,
nButtons;
} resetRec;

typedef struct {
int buttonStatus,
opCount,
column, row;
} locRec;


typedef struct {
int hCount,
vCount;
} moveRec;



/* Following are Implementations of Microsoft Mouse Functions */



resetRec *mReset()
/* Resets mouse to default state. Returns pointer to a structure */
/* indicating whether or not mouse is installed and, if so, how */
/* many buttons it has */
/* Always call this function during initialization. */
{
static resetRec m;

inreg.x.ax = 0;
callMDD;
m.exists = outreg.x.ax;
m.nButtons = outreg.x.bx;
return(&m);
}


void mShow(void)
/* Makes the cursor visible. Don't call if cursor is already */
/* visible, and alternate calls to mHide. */
{
inreg.x.ax = 1;
callMDD;
}


void mHide(void)
/* Makes mouse cursor invisible, still tracks location. Alternate calls */
/* with mShow. Do not call if already hidden. */
{
inreg.x.ax = 2;
callMDD;
}


locRec *mPos(void)
/* Gets mouse cursor position and button status, returns pointer */
/* to structure containing this info. */
{
static locRec m;

inreg.x.ax = 3; /* Function 3 */
callMDD;
m.buttonStatus = outreg.x.bx; /* Button Status */
m.column = outreg.x.cx; /* Horizontal Position */
m.row = outreg.x.dx; /* Vertical Position */
return (&m);
}


void mMoveto (int newCol, int newRow)