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vrf Detecting key press

Question asked by zsavas on Jul 1, 2004

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> How can I programically set the HOME environment
> variable in VEE? I use VEE 6.03.

Well if you can find some kind of interface to SetEnvironmentVariable then
good, but if not you can always find it in kernel32:

int __stdcall SetEnvironmentVariableA(char *pName, char *pValue);
-SHAWN-

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VRFuser Jul 1, 2004 1:30 AM
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Hello All,

I need to be able to detect a keypress on the keyboard (i.e. any key) - happy to use a windows API dll (just struggling with which function to use)....

Any ideas?

Thanks

Andy

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ChrisPotter Jul 1, 2004 1:49 AM
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Hi Mark,

thats the best way. We do that all the time and it is the only help in
several Memory leak problems VEE has (there are several). If you unload the
library the memory goes back to normal.

Very best regards
------------------------------------------------------------
Somatec B. Aufenanger & M. Bernhardt
Jagdweg 7a
D-82041 Deisenhofen

Telefon          : (089) 613 984 91
Fax.               : (089) 613 981 23
Email             : mailto:Aufenanger@somatec.de
homepage     : http://www.somatec.com/
------------------------------------------------------------

-----Ursprngliche Nachricht-----
Von: Goldberg, Mark [mailto:Mark.Goldberg@ATK.COM]
Gesendet: Montag, 28. Juni 2004 18:17
An: VRF
Betreff: [vrf] RE: Vee - Memory "Leak"

As George I didn't have time to test this but you might try putting the
allocation into an imported library and when you are done, delete the
library, which should hopefully delete the memory allocation.

Good Luck,

Mark

-----Original Message-----
From: Georg Nied [mailto:g.nied@gn-software.de]
Sent: Monday, June 28, 2004 8:35 AM
To: VRF
Subject: [vrf] RE: Vee - Memory "Leak"

Try to put the allocation object into a user object (or function).
I suppose that the allocated memory (that should be the data at the
alloc-out-pin) is freed when the user object/function terminates.

I didn't test it... just a guess

Georg

-----Original Message-----
From: SPANGENBERG,SASCHA (A-Scotland,ex1)
[mailto:sascha_spangenberg@agilent.com]
Sent: Monday, June 28, 2004 4:47 PM
To: VRF
Subject: [vrf] RE: Vee - Memory "Leak"

<snip>
> The initial Alloc is still there.

Yes - that seems to make sense but how can I prevent this?
I.e. if I only want to allocate ONE array of the appropriate size
and assign it to a variable.. I never intended to do a "copy" operation.
Alternatively how do I delete the initial array once I have copied
it to a variable?

Regards,
   Sascha

>
> Les Hammer
> Partner
> Complete Test
> 720 SW 14th St.
> Loveland, CO. 80537
> Les.Hammer@CompleteTest.com
>
>
>

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detlef.baranski Jul 1, 2004 8:52 AM
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Why not using .net functionality ?
have a look at :
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/cpref/html/
frlrfsystemwindowsformskeypresseventargsclasskeychartopic.asp

Sorry , did not test by myself so far ;-(

best regards,
detlef

-----Ursprngliche Nachricht-----
Von: STREET,ANDY (A-England,ex2) [mailto:andy_street@agilent.com]
Gesendet: 01 July 2004 17:31
An: VRF
Betreff: [vrf] Detecting key press

Hello All,

I need to be able to detect a keypress on the keyboard (i.e. any key) -
happy to use a windows API dll (just struggling with which function to
use)....

Any ideas?

Thanks

Andy

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VRFuser Jul 1, 2004 4:55 PM
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The FTDI devices are not 'generic' USB devices but are in practise USB to
serial/parallel. You can communicate with the FTDI series devices is 1 of 2
ways depending on what driver you use. FTDI produce 2 drivers a normal DLL
driver and a virtual COM port driver (VCP). Both these drivers are easy to
use under VEE. The normal DLL drivers work like any other DLL driver. The
VCP driver will appear as an extra COM port on your computer and VEE will
recognise it as a normal COM port. The only difference is that you cannot
set the baud rate as it is not applicable. Both these drivers work for the
serial or parallel FTDI chips. One word of warning, the FTDI chip needs a
microprocessor or microcontroller attached for the computer to recognise it.

As well as chips you can buy modules with a FTDI chip and a USB socket on
them. They cost about 25 and are made by DLP design. Information on them
can be found on the FTDI site. http://www.ftdichip.com/FTModule.htm They
also make one with a PIC already on but I have never tried these

Hope this helps

Kevin Valentine
kevin@physchem.ox.ac.uk

----- Original Message -----
From: <landocalrissian@att.net>
To: "VRF" <vrf@agilent.com>
Sent: Thursday, July 01, 2004 4:23 PM
Subject: [vrf] Can the M series of libraries communicate with a generic USB
device?

> Hello from Gregg C Levine
> (Pardon the format! I am at a customer so I am away from my normal
accounts!
>
> Can the current series of libraries communicate with a generic USB device?
> Not the USB to HPIB device, or any of the instruments, but one of those
FTDI devices, such as "DLP Design has PC boards with a PIC and FTDI's USB
chip." (Quoted from the USB pages at www.lvr.com )
>
> I remember an ealier discussion which revolved around a family of BASIC
enabled devices, and I was urged to use the gizmos from FTDI, as opposed to
a serial solution using the RS232 standard.
>
> My ultimate goal is to have VEE talking to breadboarded hardware via USB
either 1.1 or 2.0, via those parts.
> Gregg C Levine landocalrissian@att.net
>
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VRFuser Jul 1, 2004 7:59 PM
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NICE !!!!

Jeff Davis
Lead Software Test Engineer
CDI Engineering Solutions Aerospace Technologies
Embedded Systems and Electronics
3137 E Elwood # 160
Phoenix, Arizona 85034
Phone: (602)431-4497 (x226)
Cell: (480)330-1431
Fax: (602)431-4435

> -----Original Message-----
> From: Zafer SAVAS [mailto:zsavas@aselsan.com.tr]
> Sent: Friday, July 02, 2004 03:21 AM
> To: VRF
> Subject: [vrf] Re: Detecting key press
>
>
> Hi,
> Here is a VEE program for detecting pressed keys. It uses User32.dll
> GetAsyncKeyState() function.
>
> Zafer SAVAS
> Microwave & System Technologies Division
> Aselsan Inc./ TURKEY
>
>
>
> ----- Original Message -----
> From: "STREET,ANDY (A-England,ex2)" <andy_street@agilent.com>
> To: "VRF" <vrf@agilent.com>
> Sent: Thursday, July 01, 2004 6:30 PM
> Subject: [vrf] Detecting key press
>
>
> Hello All,
>
> I need to be able to detect a keypress on the keyboard (i.e.
> any key) -
> happy to use a windows API dll (just struggling with which function to
> use)....
>
> Any ideas?
>
> Thanks
>
> Andy
>
> ---
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VRFuser Jul 1, 2004 8:58 PM
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Hello (again) from Gregg C Levine
You do make a good point.
However, when I wrote that, I happened to be working from a box at my
customer's offices, and the only account I had access to, that was
subscribed to the list, was one that I knew would go through my ISP's
web mail interface. And that's why it looks strange.

That being stated, I agree. During the first half of this year I
looked at having VEE talk to an application running either on a
microcontroller directly, and via the serial port, or via the USB
connection. Never got anywhere because the customer that asked about
it, gave up.

Now we are at it again. When I posted the original message, I wanted
to keep the wording down because I wasn't too sure about how well my
request would go over. I now know that I didn't need bother to do so.
And essentially the device once plugged into my breadboard here, would
be attached to a processor, we haven't chosen it as of yet. And
incidentally the two US dealers for the DLP designed modules are
quoting prices of $25 American.
-------------------
Gregg C Levine hansolofalcon@worldnet.att.net
------------------------------------------------------------
"The Force will be with you...Always." Obi-Wan Kenobi
"Use the Force, Luke." Obi-Wan Kenobi

> -----Original Message-----
> From: Kevin Valentine [mailto:kevin@physchem.ox.ac.uk]
> Sent: Friday, July 02, 2004 3:18 AM
> To: VRF
> Subject: [vrf] Re: Can the M series of libraries communicate with a
generic USB
> device?
>
> The FTDI devices are not 'generic' USB devices but are in practise
USB to
> serial/parallel. You can communicate with the FTDI series devices
is 1 of 2
> ways depending on what driver you use. FTDI produce 2 drivers a
normal DLL
> driver and a virtual COM port driver (VCP). Both these drivers are
easy to
> use under VEE. The normal DLL drivers work like any other DLL
driver. The
> VCP driver will appear as an extra COM port on your computer and VEE
will
> recognise it as a normal COM port. The only difference is that you
cannot
> set the baud rate as it is not applicable. Both these drivers work
for the
> serial or parallel FTDI chips. One word of warning, the FTDI chip
needs a
> microprocessor or microcontroller attached for the computer to
recognise it.
>
> As well as chips you can buy modules with a FTDI chip and a USB
socket on
> them. They cost about 25 and are made by DLP design. Information
on them
> can be found on the FTDI site. http://www.ftdichip.com/FTModule.htm
They
> also make one with a PIC already on but I have never tried these
>
> Hope this helps
>
> Kevin Valentine
> kevin@physchem.ox.ac.uk
>
>
> ----- Original Message -----
> From: <landocalrissian@att.net>
> To: "VRF" <vrf@agilent.com>
> Sent: Thursday, July 01, 2004 4:23 PM
> Subject: [vrf] Can the M series of libraries communicate with a
generic USB
> device?
>
>
> > Hello from Gregg C Levine
> > (Pardon the format! I am at a customer so I am away from my normal
> accounts!
> >
> > Can the current series of libraries communicate with a generic USB
device?
> > Not the USB to HPIB device, or any of the instruments, but one of
those
> FTDI devices, such as "DLP Design has PC boards with a PIC and
FTDI's USB
> chip." (Quoted from the USB pages at www.lvr.com )
> >
> > I remember an ealier discussion which revolved around a family of
BASIC
> enabled devices, and I was urged to use the gizmos from FTDI, as
opposed to
> a serial solution using the RS232 standard.
> >
> > My ultimate goal is to have VEE talking to breadboarded hardware
via USB
> either 1.1 or 2.0, via those parts.
> > Gregg C Levine landocalrissian@att.net
> >
> > ---
> > You are currently subscribed to vrf as: kevin@physchem.ox.ac.uk
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