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troubleshooting Question

GetDiskFreeSpaceEx And Terrabyte

Avatar of Ocrana
Ocrana asked on
CSystem ProgrammingEditors IDEs
3 Comments1 Solution739 ViewsLast Modified:

I have a function where I check the available diskspace before start to save. It works well but if I query our 9 Terrabyte Networkdrive I got allways the message "Not enough space". Here I use:
      float theSize = theApp.appHelpers.PixGetFreeDiskSpace(oPathInfo.GetDrive());
      if(theSize<4482){    //Space in MB for a DVD Image
         MessageBox(L"Not Enough Space");
         return FALSE;
With the function in the code area. What do I worng?


double CPixbyteHelpers::PixGetFreeDiskSpace(CString tDrive)
	ULARGE_INTEGER uliFreeBytesAvailable,uliTotalNumberOfBytes,uliTotalNumberOfFreeBytes;
	uliFreeBytesAvailable.QuadPart = 0L;
	uliTotalNumberOfBytes.QuadPart = 0L;
	uliTotalNumberOfFreeBytes.QuadPart = 0L;

	if (!GetDiskFreeSpaceEx(tDrive,&uliFreeBytesAvailable,&uliTotalNumberOfBytes,&uliTotalNumberOfFreeBytes))
		return -1; // could not get info.

	//return megabytes free.
	return (uliTotalNumberOfFreeBytes.QuadPart/1024.0/1024.0);
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