LabView VB6 Dll Interfacing causes memory leak

[jschmidtengler]

I added this code to the general part of the code: 

Private Declare Function DSDisposeHandle Lib "lvrt.dll" (LStrHandle as Long) as Integer

And after I copy the the data in VB I added this code:

Dim dispose as Integer
dispose = DSDisposeHandle(StringHandle_detector)
dispose = DSDisposeHandle(StringHandle_ext)

but nothing has changed. Have I missed something here? 

If I want to create a Pointer to a C string instead - how do I do this in vb6? 

Best,

Julian

edit:

As pointers have to be adressed ByVal I changed the line to :

Dim dispose as Integer
dispose = DSDisposeHandle(ByVal StringHandle_detector)
dispose = DSDisposeHandle(ByVal StringHandle_ext)

Which did the trick 🙂

Thanks very much!!

[rolfk]

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@jschmidtengler wrote:

As pointers have to be adressed ByVal I changed the line to :

Dim dispose as Integer
dispose = DSDisposeHandle(ByVal StringHandle_detector)
dispose = DSDisposeHandle(ByVal StringHandle_ext)

Which did the trick 🙂

---

My VB knowledge is almost non existent but wouldn't

Private Declare Function DSDisposeHandle Lib "lvrt.dll" (ByVal LStrHandle as Long) as Integer

do the same?

[jschmidtengler]

Yes.

The latter would also be the more elegant way of implementing it - directly in the definition.

Best,

Julian