Basic String / C++ dll

Gastiflex · Posted: Tue Apr 04, 2006 7:14 am Post subject: Basic String / C++ dll

Hi,
In a OOo macro, I have to call a C++ dll. I have to send a String from the macro to the dll, but it seems that Basic strings are not compatible with the char* C++ type.
Does anybody know how can I do the conversion (in my macro or in my C++ program) ?
Thank you.

SergeM · Posted: Tue Apr 04, 2006 8:52 am Post subject:

And what about the dll : have you the code source ?
_________________
Linux & Windows OOo3.0
UNO & C++ : WIKI
http://wiki.services.openoffice.org/wiki/Using_Cpp_with_the_OOo_SDK
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http://wiki.services.openoffice.org/wiki/Documentation/FR/Cpp_Guide

Gastiflex · Posted: Wed Apr 05, 2006 1:18 am Post subject:

Yes, I can modify and re-compile the dll source.
The other problem I have is when I try to send an array from basic to the dll.
In basic I send a Long array and in C++ I catch Int array (so the element's size matches between basic and C++).
The sending of the first element of the array works (I check that the addresses of the first element in basic and in C++ are the same), but the I can't get the others elements.
I think the memory allocation in basic in not the same that in C++, but I don't know how to solve this (except by writing the array in a file).

SergeM · Posted: Wed Apr 05, 2006 9:05 am Post subject:

You can use OUString in your C++ dll. See http://perso.wanadoo.fr/moutou/MyUNODoc_HTML/UNOCppAPI3.html where the problem of string is tackled. I think that OOobasic furnish a OUString and you can convert it in what you want and call your sub. Note that if you use OUString you will use a dll (cppuhelper.dll I think)
_________________
Linux & Windows OOo3.0
UNO & C++ : WIKI
http://wiki.services.openoffice.org/wiki/Using_Cpp_with_the_OOo_SDK
In French
http://wiki.services.openoffice.org/wiki/Documentation/FR/Cpp_Guide