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MEMALLOC.PAS
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Pascal/Delphi Source File
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1992-08-07
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1KB
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53 lines
{ MEMALLOC.PAS
Demonstrates use of the Turbo Vision MemAlloc function.
}
Program DemoMemAlloc;
uses
Memory;
label 99;
var
APointer : Pointer;
I : Integer;
function HeapFunc(Size : Word): Integer; far;
{ Returns 1 = force memory manager to return NIL on out of memory
set to alternate values as shown:
0 = force a Heap Overflow error
2 = tells the memory manger to try again (for instance,
you might dispose of some items in this routine, thereby
freeing up some memory)
}
begin
HeapFunc := 1;
end;
begin
{ Initialize the Heap Overflow checker }
HeapError := @HeapFunc;
{ Allocate some blocks of memory until running out of free space.
You may have to use a value higher than 20 or a larger block size }
for i:=1 to 20 do
begin
APointer := MemAlloc(20000);
writeln(longint(Apointer));
if APointer = NIL then
begin
writeln('OUT OF MEMORY');
Goto 99;
end;
Write('Press Enter to continue');
readln;
end;
99:
Write('Program completed. Press Enter to continue');
Readln;
end.