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Black Box 4
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BlackBox.cdr
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progc
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cfuncs.arj
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CURSOR.C
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1991-03-07
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2KB
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71 lines
#include <dos.h>
#define MONO 7
int vid_mode = -1;
/*-------------------SetCursor--------------------------*/
/*DESCRIPTION: Sets the shape of the cursor. */
/* */
/*USES: nothing */
/*IN: cursor.c */
/*------------------------------------------------------*/
void SetCursor(unsigned int shape)
{
union REGS reg;
reg.h.ah = 1;
reg.x.cx = shape;
int86(0X10, ®, ®);
} /* setcursor */
/*----------------------------OffCursor-----------------*/
/*DESCRIPTION: Turns off the cursor. */
/* */
/*USES: SetCursor */
/*IN: cursor.c */
/*------------------------------------------------------*/
OffCursor()
{
unsigned int nocursor = 0x2000;
SetCursor(nocursor);
}
/*----------------------------OnCursor--------------------------*/
/*DESCRIPTION: Sets the cursor to a short blinking size. */
/* Must be modified for MONO screens. */
/* */
/*USES: SetCursor */
/*IN: cursor.c */
/*--------------------------------------------------------------*/
OnCursor()
{
if(vid_mode==-1)
vid_mode = video_mode();
SetCursor((vid_mode==MONO) ? 0x0A0C : 0x0607);
/* unsigned int shortcursor = 0x0607; for MONO screens = 0x0A0C
SetCursor(shortcursor); see mcdisply.c initcursor() */
}
/*---------------------------GetCursor--------------------------*/
/*DESCRIPTION: Gets the shape of the current cursor. */
/* */
/*RETURNS: a number that may be passed to SetCursor */
/*USES: nothing */
/*IN: cursor.c */
/*--------------------------------------------------------------*/
unsigned int GetCursor(void)
{
union REGS reg;
reg.h.ah = 3;
reg.h.bh = 0;
int86(0X10, ®, ®);
return(reg.x.cx);
} /* getcursor */