GetDiskSpace Problem !!

[M.Anand]

Hi

GetDiskSpace is giving a stange problem. it returns -ve value if the Disk space is more than 4 GB.
Is this an already existing bug ?

Anand

M.Anand
Development - Lead ,
Satyam Infoway Limited,
Chennai - 600034
India

[Lothar Haensler]

from the docs:
"The GetDiskFreeSpace function returns incorrect values for volumes that are larger than 2 gigabytes"
use GetDiskFreeSpaceEx

[M.Anand]

Hi
Thanks but I am using GetDiskFreeSpaceEx only. It is giving strange behaviour
Anand

M.Anand
Development - Lead ,
Satyam Infoway Limited,
Chennai - 600034
India

[Rob Wainwright]

I haven't got the documentation to hand, but doesn't the GetDiskFreeSpaceEx function use two parameters (as any thing larger than two GB is not going to fit into one signed 4 byte value.

[Rajaraman]

You have to use ULARGE_INTEGER to get the 64 bit value :
ULARGE_INTEGER available, total, free;
GetDiskFreeSpaceEx ("C:\\", &available, &total, &free);
//Separate out the 32 bit components :
DWORD low, high;
low = available.LowPart;
high = available.HighPart;


Rajaraman