1. Win32lib & key trapping
- Posted by Grape_ Vine_ <g__vine at HOTMAIL.COM>
Mar 05, 2000
-
Last edited Mar 06, 2000
Hola,
I have been playing with keytrapping and i have not been able to get
working code. Some times it will do 1/2 of of a procedure the way i want it
to, but alas I do not get just HOW to make it work correctly
If anyone has a example of working win32lib key trapping I would be very
greatfull.
The Confused Grape Vine
J Reeves
ICQ# 13728824
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2. Re: Win32lib & key trapping
"Grape Vine" wrote:
> If anyone has a example of working win32lib
> key trapping I would be very grateful.
Take a look at IDE_EDIT.EW. There are two seperate key traps - one for
printable characters, and one for navigation characters. Editor_KeyHandler
is hooked to onKeyPress (printable keys), while Editor_KeyPress is hooked to
onKeyDown (raw keys, including navigation).
Because I like to have a single routine handle the keys, Editor_KeyHandler
ends up handling all the keystrokes, including the navigation keys. I do
this through a bit of trickery - raw keys values are set negative, and then
passed to Editor_KeyHandler. I redefine the keys I'm interested in; i.e.:
KeyReturn = VK_RETURN,
KeyBack = VK_BACK,
KeyEnd = -VK_END,
KeyHome = -VK_HOME,
KeyUp = -VK_UP,
KeyDown = -VK_DOWN ...
The call to returnValue( True ) probably isn't needed. I'm trapping
keystrokes that are being sent to a (hidden) MLE, and this prevents the MLE
from ever seeing the processed keys.
Hope this helps.
-- David Cuny
3. Re: Win32lib & key trapping
It does, I found pretend.exw and that is also helping...
J Reeves
Grape Vine
ICQ# 13728824
>From: "Cuny, David at DSS" <David.Cuny at DSS.CA.GOV>
>Reply-To: Euphoria Programming for MS-DOS <EUPHORIA at LISTSERV.MUOHIO.EDU>
>To: EUPHORIA at LISTSERV.MUOHIO.EDU
>Subject: Re: Win32lib & key trapping
>Date: Mon, 6 Mar 2000 08:53:56 -0800
>
>"Grape Vine" wrote:
>
> > If anyone has a example of working win32lib
> > key trapping I would be very grateful.
>
>Take a look at IDE_EDIT.EW. There are two seperate key traps - one for
>printable characters, and one for navigation characters. Editor_KeyHandler
>is hooked to onKeyPress (printable keys), while Editor_KeyPress is hooked
>to
>onKeyDown (raw keys, including navigation).
>
>Because I like to have a single routine handle the keys, Editor_KeyHandler
>ends up handling all the keystrokes, including the navigation keys. I do
>this through a bit of trickery - raw keys values are set negative, and then
>passed to Editor_KeyHandler. I redefine the keys I'm interested in; i.e.:
>
> KeyReturn = VK_RETURN,
> KeyBack = VK_BACK,
> KeyEnd = -VK_END,
> KeyHome = -VK_HOME,
> KeyUp = -VK_UP,
> KeyDown = -VK_DOWN ...
>
>The call to returnValue( True ) probably isn't needed. I'm trapping
>keystrokes that are being sent to a (hidden) MLE, and this prevents the MLE
>from ever seeing the processed keys.
>
>Hope this helps.
>
>-- David Cuny
______________________________________________________
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