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problem in copy a folder in Thread

Hello
i'm developing a application that in a thread, I wanna copy a folder (include all files and sub directories) to another and I found this:

https://www.experts-exchange.com/questions/20982249/Copy-Folders-in-C.html

as "Assisted Solution"s comment (AlexFM), first I use memset() to fill all my char array to NULL char ('\0') and then, when I use strcpy() the function works but after using strcpy(), I should use strcat() for append some text to my char array. when I use strcat(), the function does not work!!!! (so strange)
what should I do?
thank you very much

char from[255], to[255];
 
memset(from,0,255);
memset(to,0,255);
 
strcpy(from,drive_letter); //drive_letter contain a folder path
 
strcpy(to,ini_path); //ini_path contain another folder path
strcat(to,"\\");
strcat(to,volume); //volume contain a name for folder-name
 
CopyFolder(from,to);

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CSecurity

ASKER

and function return 1026

Jaime Olivares

I don't see a reason to use memset()
What do you mean with strcat() doesn't work?

jkr

Try to outut the final values to chek cwhether they are correct, e.g.

char from[255], to[255];
 
memset(from,0,255);
memset(to,0,255);
 
strcpy(from,drive_letter); //drive_letter contain a folder path
 
strcpy(to,ini_path); //ini_path contain another folder path
strcat(to,"\\");
strcat(to,volume); //volume contain a name for folder-name
 
MessageBoxA(NULL, from, "Copying from:", MB_OK);
 
MessageBoxA(NULL, to, "Copying to:", MB_OK);
 
CopyFolder(from,to);

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llman

Can you post the variable values for drive_letter, ini_path, and volume?

Did the directory separator ("\") get escaped within drive_letter and ini_path?

CSecurity

ASKER

ohh! I found out the problem! the function that copies a folder, works correctly when I give it a folder path but I wanna copy a drive! when i give the function this parameters, doesn't work:

CopyFolder("h:\\","f:\\test"); //can not copy drive

well, now i should get files in drive and get all folders and give all folder to CopyFolder() function. now, the problem is get files in a drive and get all foders to give all folders to CopyFolder function. how can I get files and folders?
thanks you very much

llman

What is the definition of CopyFolder?

CSecurity

ASKER

i found CopyFolder function here:
https://www.experts-exchange.com/questions/20982249/Copy-Folders-in-C.html
thanks

jkr

Yes, but have you checked whether the from/to paths are built correctly?

CSecurity

ASKER

yes, I'm sure because CopyFolder("h:\\","f:\\test"); doesnt work

jkr

What HRESULT do you get from 'SHFileOperation()'?