Archicad C++ API
About Archicad add-on development using the C++ API.

Linker error - unresolved external symbol GetClassInfo

Anonymous
Not applicable
Hi!
I got linker error:

error LNK2001: unresolved external symbol "public: virtual class GS::ClassInfo * __thiscall GS::Object::GetClassInfoW(void)const " (?GetClassInfoW@Object@GS@@UBEPAVClassInfo@2@XZ)

after that as added following code

GS::Array<GS::ArrayFB<GS::UniString, 3>> autotexts;

This is a peace of sample from API Development Kit help
See the "APIAny_GetAutoTextsID" topic

Example:
#include "UniString.hpp"
#include "Array.hpp"

GS::Array<GS::ArrayFB<GS::UniString, 3> > autotexts;
API_AutotextType type = APIAutoText_Fixed;

GSErrCode err = ACAPI_Goodies (APIAny_GetAutoTextsID, &autotexts, (void *) (long) type);
if (err == NoError) {
for (ULong i = 0; i < autotexts.GetSize (); i++) {
DBPrintf ("AutoText[%03d] \"%s\" (\"%s\") = \"%s\"\n", i,
(const char *) autotexts[0].ToCStr (), (const char *) autotexts[1].ToCStr (), (const char *) autotexts[2].ToCStr ());
}
}

Here is list of my libs:

acap_stat.lib
libcmtd.lib
LIBCPMTD.LIB
kernel32.lib
advapi32.lib
user32.lib
GSRootImp.lib
dgimp.lib
InputOutputImp.lib
libxml2.lib
iconv.lib

I tried include others libs that have GetClassInfo symbol, but it did not help.

Hope to your help!
Thanks in advance.
AT
1 REPLY 1
Oleg
Expert
Hi,

Just guessing.
I think this is not "library" or linker issue.
It looks like preprocesor substitue GetClassInfo to GetClassInfoW in windows.h
I guess, may be you didnt define WINDOWS directive. Read docs closely.
"Compilation and Linking Issues" subject.
So WINDOWS an ACExtension directives are required.

PS:
And strange, why you have GetClassInfoW but not GetClassInfoA.
It seems you have UNICODE directive defined (Use Unicode character set).
Actually I am not sure - is it correct or wrong.
May be you will need to change it to "Use Multi-Byte Character Set".
May be not...

Oleg

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