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GSX-86: Graphics for the APe
9-38
INPUT LOCATOR
This operation returns the position in Device Coordinates of the specified locator
device.
For REQUEST MODE Input:
Input
Output
contrl(l)
contrl(2)
intin(l)
ptsin(l)
ptsin(2)
contrl(3)
contrl(5)
intout( l)
Opcode = 28
Number of input vertices =
Locator device number
1 = default locator device
2 = crosshairs
3 = graphics tablet
4 = joystick
5 = lightpen
6 = plotter
7 = mouse
8 = trackball
>8 = workstation-dependent
Initial X-coordinate of locator in device
units
Initial Y-coordinate of locator in device
units
Number of output vertices = 1
Length of intout array (status)
0= request unsuccessful
>0 = request successful
Locator terminator
For keyboard terminated locator input,
this is the ASCII Decimal Equivalent
(ADE) of the key struck to terminate
input. For non-keyboard terminated input
(tablet, mouse, etc.), valid locator termi-
nators begin with SPACE (ADE 32) and
increase from there. For instance, if the
puck on a tablet has 4 buttons, the first
button should generate SPACE as a ter-
minator, the second a ! (ADE 33), the
third a " (ADE 34), and the fourth a
#
(ADE 35).
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