Re: [ooc-compiler] Interface mod.: undef. ref. to win32 API proc.

[Frank H. <fh...@ph...>]

Tim Teulings wrote:
> Hallo!
> 
>> Doing my first steps with oo2c under MinGW, I wrote an interface 
>> module which begins like this:
>>
>>   MODULE IFserial [INTERFACE "C"; LINK LIB "kernel32" END];
>>
>> and which contains:
>>
>>   PROCEDURE CreateFile*
>>     (name:ARRAY OF LONGCHAR;
>>     accessMode,shareMode:SET;
>>         secAttr:lpSecAttr; create,attr:DWORD; template:HANDLE
>>     ): HANDLE;
>>
>> This module is imported by another one, "Serial.Mod". Both compile, 
>> but the linker produces an error message:
>>
>>   obj/Serial.o(.text+0x8d):Serial.c: undefined reference to `CreateFile'
> 
> 
> I'm not sure, that the function is contained in kernel32? What about 
> user32?

Win32-SDK-Help says it is in kernel32. I installed dumpbin and had a 
look at the exports of kernel32.dll and what I found is a procedure 
"CreateFileA". I made the changes and now it links. Nevertheless it is 
odd, because I did some tests before with mingw/gcc and from my C 
program I called "CreateFile" and it worked.
> 
> If you try to access Windows functions there is no need to write 
> interface modules for it, since VisualOberon already contains a 
> Windows.Mod that should contain most of the Window functions, structures 
> etc...

With respect to VisualOberon I have some questions but I guess it is 
better to open a separate thread. So hold on ...

> It module sequence starts with (note the "Pascal"):
> 
> MODULE Windows [ INTERFACE "Pascal";
>       LINK LIB "kernel32"; LIB "user32"; LIB "gdi32" END];
> 
> See VisualOberon homepage and CVS repository for details.
> 

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