Tseng Qtec VGA 1024, Installation Manual

Page: 80 / 123

Lattice C Example
#include<dos.h>
set__zoom__ window(window)
int win d o w [];
{
union REGS in,out;
in.x.ax = 6;
in.x.bx = getdatas();/* Data segment of window[] */
in.x.cx = (int) window;
int86(zoom__int,&in,&out);
Query Application. .Key.
Function Code
AX = 7
Arguments
None
Returns
AX = 0/1
Description
In specify mode the END key on the keypad has been reserved
for application specific functions. This function returns the
current toggle state of that key.
This key has been used in the AutoCAD driver for example, to
tell the AutoCAD driver whether or not to pan and scroll using
the mouse. When the value returned is a 1 the display window
is left alone. When the value returned by this function is a
0 the AutoCAD driver will invoke the Center Zoom Window
function each time a new cross-hair cursor is drawn. This has
the effect of panning the display using the mouse or the
keyboard.
Lattice C Example
#include<dos.h>
q__end__key ( )
{
uninon REGS in,out;
in.x.ax = 7;
int86(zoom__int,&in,&out);
return(o u t .x .a x );
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