DLL Problem Ergent

[koukouroukou]

How a DLL Knows whitch form raised it and make a refernce to that form.
Please Help me

 

[AndyDuke]

Not sure why you would need to know which form created an instance of a class but assuming you do then,

Add a property to a class within the DLL that takes a form e.g.

Private frmForm As Form

Public Property Get ParentForm() As Form
Set ParentForm = frmForm
End Property

Public Property Set ParentForm(ByRef Value As Form)
Set frmForm = Value
End Property

When you create an instance of the class within the form, you can now pass a reference to the form to the class.

set objClass = new Class
set objClass.ParentForm = Me

If you need to find out which form created the class aat a later date then you just reference the ParentForm property.

Debug.Print Class.ParentFor.Caption

Hope this helps with your problem.
Andy

 

[koukouroukou]

i wanted on the unload event of my_dll_form to pass back to my parent form the property of an active-x.
thanks a lot i will try it on monday.

 

[koukouroukou]

Dear Andyduke
I was a total failure.I wasnt able to make the dll to see the form here my steps and my question with more details and maybe you can help me some more.

1 call the dll from Form1
2 call a form within the dll Dll_form
3 trasfer data from form1 to DLL public variables
4 i use the dll_form for connection to sql and all my other functions

So far all OK my problem now:
5 on Dll_form unload i want to activate an active x control on Form1 but my dll_form ignores the existance of Form1


thanks on advance