ActiveX Control Experts

[Davidk]

I'm trying to use an ActiveX control called THBImage... having pretty good luck with it, but I'm getting stuck on the syntax of some stuff.

It's an image control that you drop on a form, and you can draw lines and circles, etc. Every time you draw a shape a "Region" is added to the control.

Whenever a shape is added to the image this event fires for the control

function newregion as v (Region as OLE::thbcom.thbimage.45::THBRegion)
:test:activex2.activex.RegionAdd(Region) 'this is my code for adding the new shape... THBRegion gets created here... or added to
end function

Whenever a shape is selected on the control, this event fires

function overregion as v (lngRegionIdSelected as N,x as N,y as N)
end function

The documention for creating a Region is:

The first way is to start a region placement operation by using the RegionStart methods. The user then places a Point, Line, LineString, Polygon or Rectangle region on the image. After completing the region the NewRegion event is fired providing you the THBRegion object. The new THBRegion object already has an Id value that you can use but if you prefer you can assign a different one.

I'm trying to get to the THBRegion object but can't see how.

In VB code you'd write

rg = THBImageLibCtl.THBRegion

but I'm not having any luck with it.

I'm not great with ActiveX syntax... anybody have an idea?

Thanks.

[Finian Lennon]

Re: ActiveX Control Experts

Every ActiveX needs its own tweaks to work with A5 and it's almost impossible to offers suggestions without installing the control in question.

You might get some ideas by searching on "ActiveX" here on the message board and, if you have it, look at Peter Wayne's book and examine how he connects to the EZTwain scanner driver.

You can also try to experiment by creating an ole connection to the ActiveX in Alpha's interactive window and then try to discover what methods and properties are available. Lastly you can locate the ActiveX in Alpha's OLE Automation Browser and see what you might glean from that.

[Davidk]

Re: ActiveX Control Experts

Alpha5 actually does a really good job of exposing all the properties, methods, and setting up the Event code... quite impressed with that. As you say, it's finding the tweaks that will make it work within the environment. I understand how to do it in VB... but now have to fiddle quite a bit to discover the A5 side. Thanks.