Conversion of C declaration to VB

[epmm001]

Could anyone please help me to convert to following C code to VB. <br>
<br>
void Jumblo (char key[], /* Key for encryption / decryption*/<br>
char *input, /* Pointer to input buffer */<br>
int lenInput, /* Length of input buffer in bytes*/<br>
char *output, /* Pointer to output buffer */<br>
int encrypting,/* Encrypting (#0 yes) */<br>
int procFlag, /* Processing flag */<br>
/* 1 Blowfish only */<br>
/* 2 Jumble only */<br>
/* Otherwise Jumble and Blowfish */<br>
int newBuffer);/* Treating new buffer. */<br>
/* Normally set to 1 */<br>
<br>
I have tried to do what I considered normal conversion substituting Longs for the Int and String for the Char declaration.<br>
My declaration looks like this;<br>
<br>
Private Declare Sub JumBloB Lib "jumblo.dll" Alias "_JumBloB" (ByVal Key As String, ByRef inp As String, ByVal lenInput As Integer, ByRef output As String, ByVal encrypting As Integer, ByVal procFlag As Integer, ByVal newBuffer As Integer)<br>
<br>
I have tried many variations including changing ByVals to ByRefs but am still getting a 'Bad DLL calling convention' error.<br>
<br>
Any help with this problem would be much appreciated.<br>
<br>
Chris Benton

 

[databarn]

Chris,<br>
<br>
This is probably something you've done already, but have to ask. Have you looked at Daniel Appleman's VB guides to the Windows APIs? There's a 16-bit and a 32-bit, both of which have helped me greatly. <br>
<br>
If that's old news, have you perhaps tried sending the problem direct to Dan at (I think still)

http://www.desaware.com?

No guarantees, but he has responded to such posts in the past. Who knows, you might give him material to start a new book &lt;grin!&gt;. <br>
<br>
Sorry I couldn't help directly, and sorry if I've covered old ground.<br>
<br>
Make a good day . . .<br>

 

[RustyG]

I can't test this without the DLL, but I'd changed the String ByRef's to Byval and pass fixed length strings (don't forget to Null Terminate them)