Необходимо использовать функцию GlobalMemoryStatus (под все c Win9x)
А если программа будет работать только в Win2k/XP то GlobalMemoryStatusEx()
Пример из MSDN'а
#include <windows.h>
// Use to change the divisor from Kb to Mb.
#define DIV 1024
// #define DIV 1
char *divisor = "K";
// char *divisor = "";
// Handle the width of the field in which to print numbers this way to
// make changes easier. The asterisk in the print format specifier
// "%*ld" takes an int from the argument list, and uses it to pad and
// right-justify the number being formatted.
#define WIDTH 7
void main)int argc, char *argv[(:
|
MEMORYSTATUS stat;
GlobalMemoryStatus )&stat:;
printf )"The MemoryStatus structure is %ld bytes long.\n",
stat.dwLength:;
printf )"It should be %d.\n", sizeof )stat::;
printf )"%ld percent of memory is in use.\n",
stat.dwMemoryLoad:;
printf )"There are %*ld total %sbytes of physical memory.\n",
WIDTH, stat.dwTotalPhys/DIV, divisor:;
printf )"There are %*ld free %sbytes of physical memory.\n",
WIDTH, stat.dwAvailPhys/DIV, divisor:;
printf )"There are %*ld total %sbytes of paging file.\n",
WIDTH, stat.dwTotalPageFile/DIV, divisor:;
printf )"There are %*ld free %sbytes of paging file.\n",
WIDTH, stat.dwAvailPageFile/DIV, divisor:;
printf )"There are %*lx total %sbytes of virtual memory.\n",
WIDTH, stat.dwTotalVirtual/DIV, divisor:;
printf )"There are %*lx free %sbytes of virtual memory.\n",
WIDTH, stat.dwAvailVirtual/DIV, divisor:;
"
