De-Referencing A Pointer

[James Dunne]

Rory Starkweather wrote:
>>void foo(dchar c) {}
>>void main()
>>{
>>	foo('a');
>>}
>>
>>so you'll probably have no trouble there. :)
>>
> 
> 
> 
> Thanks for the help. I'm still not sure how to get VB to send a dchar, but there
> are only a couple of possibilities. Unless you are suggesting that I pass it to
> D as a string and then use a conversion function on it.
> 
> 

Actually you want to use wchar* at the D end from VB.  VB sends 
'Unicode' strings where each character is represented by two bytes. 
This is the equivalent of a wchar* in D.  char, wchar, and dchar in D 
are all more-or-less interchangeable.  The best way to get VB and D to 
do string work together is this:

Declare Function findChar Lib "..." (ByVal t As String) As Long

export extern (Windows) int findChar(wchar* str) {
	...
}

I'm not 100% sure if this works as I've had serious issues with VB6's 
string handling in the past (especially in scenarios like this).  I 
think the trick is to initialize the string from VB's side and pass it 
in to C/C++/D for them to modify it.  I'll do some more research on this 
and get you a better answer if I can.

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James Dunne