Call External DLL on LabWindows

[TommyCVI]

Hi,

I have a LabWindows CVI 8.0.

I have a problem with any DLL with a USB Instrument.

From CD-ROM i get the library for interface my project with instrument (7 DLL files and one CHM Help file).

I haven't a LIB or Header Files.

Is possible with LabWindows call the DLL function ?

If is possible, can you write a example please?

Thanks

Tommaso

[AndreaN]

Ciao Tommaso,

 you can take a look at this document, that explains how to call DLLs in CVI without having the .LIB and the .H files:

How Can I Access DLL Functions in a LabWindows/CVI Program Without Including the Import Library in t...

If you have the .H file you can create the .LIB yourself in the way explained  in this other document:

Linking to Functions Defined in a DLL From LabWindows/CVI

 Hope this can help,

Ciao,

[TommyCVI]

Hi,

I have a problem.

I can't use a function if not declare a variable.

For example:

On DLL i have a class name -> TestOne

I haven't a Header file or Lib File, as I declare this class?

My problem is call this example: TestOne->DllFunction().

I verify with: GetProcAddress(hinstLib, "TestOne->DllFunction()");

But don't work fine.

Sorry for my english.

Thank you for your support

Tommaso

[TommyCVI]

Hi,

I explane my problem with this project:

I have a example on Visual Studio C++, this is the code:

[On Header file]
IFiberChek2Ptr m_pFiberChek2;

[On code file]
m_pFiberChek2 = IFiberChek2Ptr( __uuidof(FiberChek2Window) );

[On TLH file]
struct __declspec(uuid("d381ffc3-b122-4a57-b4b0-549f6378ba9a"))
/* LIBID */ __FiberChek2Lib;
struct __declspec(uuid("b4947355-4670-4d03-af25-cbf22f86a6ef"))
/* dual interface */ IFiberChek2;
struct /* coclass */ FiberChek2Window;

//
// Smart pointer typedef declarations
//

_COM_SMARTPTR_TYPEDEF(IFiberChek2, __uuidof(IFiberChek2));

[I must call this function]
m_pFiberChek2->TestFiber();

Have you a advice for me?

Thank you for your support
Tommaso