#include <windows.h>
#include <stdio.h>
#include <rtapi.h>
static PVOID vAddress;  // virtual memory address returned by
RtAllocateLockedMemory
void main(void) {
// Allocate memory
vAddress = RtAllocateLockedMemory(size);
if (!vAddress) {
	 printf("\nFailure on RtAllocateLockedMemory\t");
	 printf("Error=%d\n", GetLastError());
	 break; // if this fails - no use to continue
}
else {
	 printf("\nSuccess on RtAllocateLockedMemory\n");
	 printf("Virtual memory address = 0x%08X\n", vAddress);
	 // Write to the memory
	 *vAddress= 0;
}
// Free memory
if (!RtFreeLockedMemory(vAddress)) {
	 printf("\nFailure on RtFreeLockedMemory(0x%08X).\t",
vAddress);
	 printf("Error Code = %d\n", GetLastError());
}
else {
	 printf("Success on RtFreeLockedMemory(0x%X).\n",
vAddress);
}
 ExitProcess(0);
}