asked on

Altering form and control properties via dll

Does anyone have any best practice, as it pertains to altering a form control property from a referenced dll?

For example, if I have a dll that gets called and is running a process... and I want a label in the calling form to say "please wait, processing" (caption property)...

But I do not want to change any code on the form... just do it from the dll class file.

Thanks

Mark_FreeSoftware

you can try somthing like this:

in your dll:

Public Sub update(lbl As Label, yourstuff As Variant)
lbl.Caption = "Loading, please wait!"
End Sub

in your app:

Private Sub Command1_Click()
update Label1, "your data and other things here"
End Sub

born4code

ASKER

Yes, but if I am handling events then I don't have the luxury of passing the control variable. That would be the obvious choice. I am using a control handler... let say in the class I have...

Public Sub cmdUpdate_Click() '<<<< handles the click event, no params passed
'something here
End Sub

?

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Mark_FreeSoftware

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born4code

ASKER

Ah... okay, what I did was put the declaration right inside of my Class file, and then set it in the form load of the page. Then I can access it directory from the class. Duh!

Works good this way. The only thing that stinks is that it sure would be nice to pull it somewhere from an object elsewhere... I did experiment with VB.Forms object... and if I use the form name I can trace it down that way as well.

Thanks