Re: Need help trying to create a ActiveX registered event

[Terry S]

Actually I got the answer from NI.  When you wire the activeX control
to the reg callback and then select the event, two inputs appear, VI
ref and User parameter.  You first wire your object to the user
parameters, then right click on the VI ref and click create callback
vi.  The vi is then created with the proper input for the user
parameter.

Need help trying to create a ActiveX registered event

[Terry S]

I am trying to create a register event for an ActiveX component.  The
problem I am having is creating the callback vi.  When I right click
on the VI ref and create the callback vi it is created with the user
parameter as a variant. I would like this to be a control refnum.  If
I open the callback vi and replace the user parameter variant with a
control refnum the wire from the callback vi to the VI ref is broken.
How do I change the user parameter?

Re: Changing the brightness and contrast of an image displayed in a picture control

[Terry S]

The ActiveX component is called ImageX by Fath Software.  I am also
using their VideoCapX to capture images.

Re: Changing the brightness and contrast of an image displayed in a picture control

[Terry S]

Thanks all for you comments and suggestions and as much as I would
like to take on the challenge of programming these funtions myself, I
am a true believer of not re-inventing the wheel.  I have found a very
inexpensive ActiveX control that will allow me to load and manipulate
the images.  Again thank you all for your suggestions.

Need ideas for auto-identifying a device connected to a serial port

[Terry S]

We manufacture a product that uses a stepper motor controller. We
communicate with the stepper motor controller through a serial port.
We have different configurations of this product.  We also have
several generations of this product that are using different stepper
motor controllers. Because of this we also have several different
versions of the software available to cover the different unit.  I am
in the process of re-writing the software with the idea of having one
version cover all our different units.  What I would like to know is
if it is possible to identify which unit is plugged into the serial
port so the software will load the appropriate driver and
configuration?  I was thinking maybe something could be built into the
serial cable that would be specific to a unit?  Any ideas would be
helpful.