Capture CTRL key status at Mouse time?

[Mike Luther]

Is it possible somehow with PB 3.5 to capture that the CTRL, ALT or
SHIFT key is being held down on the keyboard at the same time the
PB mouse routines return a mouse click location?

Thanks ..


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Mike Luther
[email protected]

[Mel Bishop]

Yep! Interrupt &h16, sub-function 02 will do just that. I used
to have the some code but seem to have misplaced it.

function KeyBoardStat$
        reg 1, &h0200
        call interrupt &h16
        t$ = bin$(reg(1))    ' Stats returned in AL
        do until len(t$) = 16
        t$ = "0" + t$
        loop
        function = right$(t$,8)
        end function


1 = ...

0  0  0  0  0  0  0  0
|  |  |  |  |  |  |  |__ Right shift key pressed
|  |  |  |  |  |  |_____ Left shift key pressed
|  |  |  |  |  |________ Either control key pressed
|  |  |  |  |___________ Either Alt key pressed
|  |  |  |______________ Scroll lock on
|  |  |_________________ Num lock on
|  |____________________ Caps lock on
|_______________________ Insert on

Typed this in freehand from memory. You may have to play with
it some.


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[This message has been edited by Mel Bishop (edited July 13, 2005).]

[Mike Luther]

Thanks Mel ..

Pointed me back to and matches information in Jourdain's "Programmer's
Problem Solver for the IBM PC, XT & AT" - Page 104 and 105. That book
hadn't been off the shelf here for a LONG time. It'll let me mimic my
already existing code pickoff for those keys in combination with the
arrow keys here. I'll combine it with something a little more eye
catching than the ASCI CHR$ 24-27 to mimic the arrow keys for operator
prompting and training to get their hands back off the mouse and to
the keyboard for speed and usefulness...





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Mike Luther
[email protected]

[Clay Clear]

Wow, Mel, I'm impressed! I was already aware that you're pretty
competent at DOS programming, but I didn't know that it was to
the extent of being able to spell out the functioning of an interrupt
from MEMORY! I consider my own self to be reasonably competent at
DOS programming, but not anywhere close to that extent.

My respect for your abilities has grown considerably.

P.S. These are literal statements, not sarcastic ones.



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clay at clayclear dot net

[Mike Luther]

Concept is working here Mel ..

Thanks for your suggestion!




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Mike Luther
[email protected]