DosMemAvail

Bindings:  C, MASM 

This call returns the size of the largest block of free memory. 

 DosMemAvail     (MemAvailSize) 
 

 MemAvailSize (PULONG) - output 
    Address of the size of the largest free block of memory. 

 rc (USHORT) - return 
    Return code description is: 

    0         NO_ERROR 
 
 Remarks 

 DosMemAvail allows an application to determine how heavily used system 
 memory is at a particular time. The returned value is a "snapshot" that 
 may be valid only at the moment this function is issued and can be 
 expected to change at any time due to system activity. 

 This call can be used as an indicator for memory availability before a 
 call to DosAllocHuge is made.