DLL Export C/C++ 6.00 function invoked by VB6
- by nashth
Hi all,
I have been attemptng to create a DLL with C/C++ that can be accessed by VB6, and that's right I get error "453 Can't find DLL entry point myFunctionName in myDllName.dll" upon calling the function from a VB6 app.
After searching the Web, including this site, I see that I am not alone, and I have tried the various solutions posted but error "453" is unexcapable.
This is Not a COMM dll, and I believe that is possible when created via C/C++.
In any case, please help, if you can. Please refer to the following simple test case below:
The DLL created as a C/C++ 6.00 Win32 Dynamic-Link Library:
#include
// Note that I did try the line below rather than the def file, but to no avail...
// #pragma comment(linker, "/EXPORT:ibask32=_ibask32@0")
// Function definition
extern "C" int __declspec(dllexport) __stdcall ibask32()
{
MessageBox(NULL,"String","Sample Code", NULL);
return 0L;
}
The def file:
LIBRARY "Gpib-32"
EXPORTS
ibask32
Now for the VB App:
The following is the entire content of the startup Form1, Form_Load
Option Explicit
Private Sub Form_Load()
Call ibask
End Sub
The following is a BAS module file that is added to the project:
Option Explicit
Declare Function ibask32 Lib "Gpib-32.dll" Alias "ibask" () As Long
Sub ibask()
Call ibask32 ' Note: This is the point of failure
End Sub
Thanks in advance if a workable solution can be provided,
Tom
