I can't copy the contents of an array to another array in struct

[SeBeQ]

Hi I have struct

struct sFile{
WCHAR filename[256]
WCHAR path[32727]
};

I get file and path with OPENFILENAME and GetOpenFileName(&ofn)

I have buffers variable:

WCHAR filenamebuf[256];
WCHAR pathbuf[32727];
//buffer to send filename and path from OPENFILENAME 

I test this buffer and is ok the filename and path is OK

and...

sFile fileTemp;

ZeroMemory(&fileTemp,sizeof(fileTemp));

wcscat(fileTemp.filename,filenamebuf); //AND fileTemp.filename is empty
wcsncpy(fileTemp.filename,filenamebuf,256); //AND fileTemp.filename is empty
memcpy(fileTemp.filename,filenamebuf,sizeof(filenamebuf)); //AND fileTemp.filename is empty 

What I'm doing wrong??

EDITED****
wcscat(fileTemp.filename,"KKKKKKKK"); //fileTemp.filename is empty!!!

I'm irritable