After 15 upgrade, L_FileInfo keeps returning -9

Hello,

I'm upgrading our various projects to LeadTools 15 (from 14). I've swapped out the DLL's and removed the unlocking code (as that seems to be included now). But when I run an App, L_FileInfo returns "-9".

nRet = L_FileInfo(szFilename, &FileInfo, sizeof(FILEINFO), 0, NULL);

szFilename is of the type L_TCHAR and is populated with the correct path of an existing jpeg file. This code worked before the upgrade. The only thing I've changed here (in an attemp to fix the problem) was to change szFilename to L_TCHAR from TCHAR.

Any ideas why I keep getting this ERROR_FILE_FORMAT error?

Thanks in advance...

Duckwon

Duckwon,

Error -9 means "Invalid File Format". One reason
this happens is failing to locate the LEADTOOLS file format DLLs, such as Lfcmp15u.dll and Lftif15u.dll.

In previous versions of LEADTOOLS, these files were
installed in the Windows SYS folder (SYSTEM or SYSTEM32). However, now you need
to copy them to your EXE's folder along with other needed DLL files. Did you do this?

What I did was copy the files in 'LEAD Technologies\LEADTOOLS 15\Redist\API\Win32'to the folder with our EXE. Now I've copied in those two dlls and L_FileInfo is working. Of course, once I got past that code I ran into another bunch of errors. Are there other dlls I should be copying into the EXE's folder because of the new LeadTools 15?

For instance the constructor for 'struct_file_information' cannot be found. Another Engineer here thought that was a LeadTools object.

Duckwon

struct_file_information was defined in version 14 and 14.5 of Ltfil.h, but it is not in v15 headers.

Please make sure that your project does not contain any
copies of header files from LEADTOOLS 14, and that all LEAD headers are referenced from the LEADTOOLS 15\Include folder.

Thanks Adnan, I've already done that. The problem is not that I'm using the wrong headers. The problem is that I keep running into types that are nolonger supported in LeadTools15. And as I can find no mention of these changes in the Help's version history, I am forced to try to figure out what has surplanted the now exstinct types. It would be nice to have some document which listed ALL the changes, saying something like " 'struct_file_information' is longer supported, use '_FILEINFO' instead". Such a document would make the upgrade to LeadTools15 much less painful.  ;)

If this document exists and I am just missing it, please let me know where to find it.

Thanks...

Duckwon

Hello Duckwon,

I don't think you should be using
"struct_file_information" in 14 or "_FILEINFO" in 15 to
begin with, because these are structure tags, and the actual data type
documented in our help files for both versions 14 and 15 is called "FILEINFO".

In other words, the normal approach is to use the FILEINFO data type, which has the same name in LEADTOOLS 14 and 15.

There are changes from 14.5 to 15, and they are documented
in the help topic "Changes from Version 14.5 to Version 15" in the Version History section of the help file.

In this particular case, the change is not documented because it's internal change.

Thanks for explaining that Adnan. I was upgrading code that was written by someone else and I was focused more on just changing versions rather than fixing the code. I see what you are saying and I'm fixing it now.

Thanks again...

Duckwon