activex events callback registration functions

[dbru]

I'm ebeding an ActiveX control into UIR file. I'm able to access it's methods and properties but having some problems creating callback functions for it's events. I see the events for the ActiveX control in the Event Callback Registration Function Window on the left. Is there a way to get CVI to create the callback functions as it does for a Command button or do you have to do it manually? If so how does one go about doing such?


regards,

Dan

[bilalD]

There is no way to do this automatically. You will need to do this programatically via the event callback registration functions that are generated with the ActiveX controller.

[dbru]

Thanks Bilal:

Is there any sample code that illustrates the process of creating a callback handler using the callback registration functions? I'm kind of new to CVI and not familliar with how to use these functions properly.

Regards,

Dan

[bilalD]

The functions require a handle to the activex object, and a pointer to the function you want to fire when the particular event occurs. Each event registration function expects a particular function signature. If you open up the function panel and right-click on the callback function parameter, the help will indicate what the function signature should be. That is pretty much all you need to register a handler for the particular event. You will need to do thsi for each individual event you want to handle.

[dbru]

Bilal:

I got it to function.

Thanks

[rwmahar]

Spoiler

I'm creating an activex controller for the first time.  I don't see the Callback Event Registration window.  How do I get to it?  I'm assuing this will tell me which callbacks I need to handle?