C语言获取磁盘容量代码

 
/*取得驱动器盘符*/
DWORD dwDrive;
INT nDrive;

char dName[4] ;
CString Driver;
long GB = 1024*1024*1024; //表示级别：GB

/*取得驱动器大小*/
ULARGE_INTEGER Free ;
ULARGE_INTEGER Total ;
ULARGE_INTEGER TotalFree ;

dwDrive = GetLogicalDrives();

for ( nDrive = 0 ; nDrive < 26 ; nDrive++ ){
if ( dwDrive & (1 << nDrive) ){
sprintf(dName,"%c:\\",(nDrive + 'A'));
Driver = CString(dName);

if(GetDiskFreeSpaceEx((LPCWSTR)Driver,&Free,&Total,&TotalFree)){
printf("%s:\\ 剩余：%3I64u GB 　　　容量：%I64u GB \n",Driver,Free.QuadPart/GB,Total.QuadPart/GB);
}
}
}