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a strange thing on using ATL

Hi, i built a ATL last time. when added it into a vb project like below, it works well.

''''''''''''''''''''''''''''''''''''''''''''''
Private Sub Command1_Click()

Dim r As New ATLINBTWNLib.InsideCOM

r.TestLib (2) <-- compile error here

End Sub

'''''''''''''''''''''''''''''''''''''''''''''''''

but after i changed sth in the ATL, (add a new method), once i did the above things again, it always give me a "compile error: expected function or variable" on TestLib the method.

but, when i type r. it can show me a list a method, but why it fails in compilation? what could be possible solution? thanks

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DanRollins

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sunyuchen

ASKER

Hi, Dan
oh, no, the ATL is created by me. there is such a function. btw, i also asked my friend, i got such comment.
///////////
I just tested the ATL, I can not create the instance of the class in VB, the message says "Active X component can not create Object"
I looked at the code, the problem is in your ATL code, the
ATLINBTWNLib.InsideCOM is not public createable.
///////////

what do u think of it? how to make it public createable?

thanks
--Eric

DanRollins

Maybe the book Inside COM has a clue or two.

-- Dan

sunyuchen

ASKER

hi, Dan
i read the book and tried the ATL in these days. i found the error comes from when i declare more than one arugments in the method. see below:

STDMETHODIMP CStdLib::Test1st(BSTR src)
{
// TODO: Add your implementation code here
return S_OK;
}
STDMETHODIMP CStdLib::Test2nd(BSTR src, BSTR des)
{
// TODO: Add your implementation code here
return S_OK;
}

and in VB the codes are:

Dim myRef As New TESTSNDLib.StdLib
myRef.Test1st (src)
myref.Test2nd(src, des) <--- compile error" expected:= "

at first, why the 2nd method give me a comile error like that? it is exactly the same as 1st except has one more arugment.??

and if i changed it into:

a = myref.Test2nd(src, des) <--- comile error " expected funtion or variable "

well, it is really confusing me. can i can not define where goes wrong.

what do u think? is it vb problem or ATL problem. I think mainly ATL problem. :(

hi, Dan, my objective is to build a ATL and pass two string value and one integer value into the ATL function. Do u mind to do a try for me and tell me how to achieve this in ATL? thank you very much.

DanRollins

The object is declared as
myRef
then when you use
myref
you get errors. Does the error go away if you use the same name?

-- Dan

sunyuchen

ASKER

what do u mean use the use the same name?

DanRollins

>>what do u mean use the use the same name?
SOrRy, i sHOUld haVe TRieD tO Be cLEarer: I mean "if you spell the variable the same in both cases"

-- Dan

griessh

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