Calling a DLL function in VB6 - how?

[MrPeds]

Hi,

I have written a DLL in C++ that exports a single function in its .def file. I have tested the DLL by calling if from another C++ program and it works fine.

I'd basically like to know how do I call the function from VB? does it vary if the DLL is located in the local directory or placed in the windows/system32 folder.

My function simply returns an integer, and has no arguments, e.g. in C++ it is:

int myFunction(){......}

Thanks in advance,

MrPeds

 

[LazyMe]

Declare function myFunction lib "your_dll.dll" () as long


Now you can call it, it doesn't matter if the dll is local or in the system32 directory, or in any other directories included in the system's search path.



Greetings,
Rick

 

[DrJavaJoe]

Go to the Project Menu -> References... and Browse for the dll to set a reference to it. You then should be able to call it by doing the following.

Dim MyClass as new ClassName
dim intReturnValue as integer
intReturnValue = MyClass.FunctionName

 

[LazyMe]

That won't work, that's for COM dll's only. And since he's exporting the function using its .def file at least that function is a regular dll call (and probably the whole dll itself is a regular one).
Greetings,
Rick

 

[DrJavaJoe]

I stand corrected, thanks Rick.

 

[LazyMe]

No worries...
Greetings,
Rick

 

[MrPeds]

thanks for this - its exactly what I need!

MrPeds