strings from vb to evc++...

[Eric BOUXIROT]

hi there,

i have som etrouble when i call a custom DLL (made with eVC++) ..my function
take char* (non unicode) to display it (after convert to unicode)

DLLEXPORT long F_BDO_MessageBoxOK(char *IN_title, char *IN_msg )

The declare is
Public Declare Function F_BDO_MessageBoxOK Lib "PDA_BDO.dll" (ByVal
IN_title() As Byte, ByVal IN_msg() As Byte) As Int32

I use this syntax in vb to call the DLL..
F_BDO_MessageBoxOK(ascii.GetBytes("toto"), ascii.GetBytes("tata"))

but it seem VB not add 0 char at the end of string....

how i can do except to add chr(0) after my string ?

thank a lot !

 

[Alex Feinman [MVP]]

When you use internal marshaller and pass a string as unicode, the string is
0-terminated. Since you need ascii (rarely used in Windows CE), and took
matters in your own hands, I guess it's up to you to 0-terminate the buffer