我需要用Delphi 2007获取系统的总物理内存。在4GB或更多的系统上使用GlobalMemoryStatus似乎会给我带来错误。在Delphi 2007中,GlobalMemoryStatusEx不存在,所以我手动将函数调用添加到了我的程序中。它在我的Windows 7 x64上正确返回8GB的内存,但在Vista x32系统上仍然返回一个不正确的值(应该是4GB,但返回2.9GB)。您有什么想法我可能做错了什么吗?而且,GlobalMemoryStatusEx能在旧操作系统上工作吗?
type
DWORDLONG = UInt64;
PMemoryStatusEx = ^TMemoryStatusEx;
TMemoryStatusEx = packed record
dwLength: DWORD;
dwMemoryLoad: DWORD;
ullTotalPhys: DWORDLONG;
ullAvailPhys: DWORDLONG;
ullTotalPageFile: DWORDLONG;
ullAvailPageFile: DWORDLONG;
ullTotalVirtual: DWORDLONG;
ullAvailVirtual: DWORDLONG;
ullAvailExtendedVirtual: DWORDLONG;
end;
function GlobalMemoryStatusEx(var lpBuffer: TMemoryStatusEx): BOOL; stdcall; external kernel32;
function getmemorysize:word;
var
memory: TMemoryStatusEx;
begin
FillChar(memory, SizeOf(memory), 0);
memory.dwLength := SizeOf(memory);
GlobalMemoryStatusEx(memory);
result:=memory.ullTotalPhys div (1024*1024);
end;