Hai Everybody !VC dll in VB ?

How to use a regular dll create using MFC Dll wizard in a vb application.

I 've created a small dll by name sum(int,int) which returns an integer .

I want to use this function in VB application.

I will be glad if any body can help,

Well, this is the way I did it:

1. Make sure you use WINAPI as the calling convention for the functions you want to export (i.e. make available from VB), like this:

Code:

---

double WINAPI myFunc(double myVar)

---

2. Add a def file to your project - it's just a text file like this:

Code:

---

LIBRARY myDLL
EXPORTS
    myFunc

---

Make sure there's an entry for each function you want to export.
3. In VBA (probably the same in VB) put something like this in the declarations area:

Code:

---

Declare Function myFunc Lib "myDLL" (ByVal myVar As Double) As Double

---

Make sure your DLL is in your system directory.

I think that on 32-bit versions of Windows ints are 2 bytes in VB but 4 bytes in C, so you'll have to use short in your C code instead of int. Is there a 'cleaner' way of doing this? I don't know, I'm new to this.

Hope that helps.

N.

Use the long type in VB.