小弟用下列程式來監測主記憶體的使用量
TMemoryStatus mem;
mem.dwLength=sizeof(TMemoryStatus);
GlobalMemoryStatus(&mem);
但為何mem.dwTotalphys始終都只顯示2GB,我的RAM是3GB
但若RAM在2GB以下都可正確讀取實際的值
這變數不是unsigned long(32bit)嗎???4GB以下應該都能正確讀取
就連mem.dwAvailPhys都是顯示2147483648(2GB)
除非將記憶體用到剩2GB以下才看得到真正實際值,
否則任何大於2GB都只顯示2GB
請教各為前輩這是什麼原因,謝謝!
我的編譯器是BCB5(跟這有關嗎?)
為何會這樣呢?

系統限制
On Intel x86 computers with more than 2 GB and less than 4 GB of memory, the
GlobalMemoryStatus function will always return 2 GB in the
dwTotalPhys member of the MEMORYSTATUS structure. Similarly, if
the total available memory is between 2 and 4 GB, the dwAvailPhys member
of the MEMORYSTATUS structure will be rounded down to 2 GB
===================引 用 f1driver 文 章===================
小弟用下列程式來監測主記憶體的使用量
TMemoryStatus mem;
mem.dwLength=sizeof(TMemoryStatus);
GlobalMemoryStatus(&mem);
但為何mem.dwTotalphys始終都只顯示2GB,我的RAM是3GB
但若RAM在2GB以下都可正確讀取實際的值
這變數不是unsigned long(32bit)嗎???4GB以下應該都能正確讀取
就連mem.dwAvailPhys都是顯示2147483648(2GB)
除非將記憶體用到剩2GB以下才看得到真正實際值,
否則任何大於2GB都只顯示2GB
請教各為前輩這是什麼原因,謝謝!
我的編譯器是BCB5(跟這有關嗎?)
為何會這樣呢?

編輯記錄

冒昧再請問前輩一下,還有其他方法可以使用嗎?
我看到工作管理員都能顯示到3GB,
還是說這問題已經無解??

感謝前輩熱心為小弟回覆


===================引 用 syntax 文 章===================
系統限制
On Intel x86 computers with more than 2 GB and less than 4 GB of memory, the
GlobalMemoryStatus function will always return 2 GB in the
dwTotalPhys member of the MEMORYSTATUS structure. Similarly, if
the total available memory is between 2 and 4 GB, the dwAvailPhys member
of the MEMORYSTATUS structure will be rounded down to 2 GB

On computers with more than 4 GB of memory, the GlobalMemoryStatus
function can return incorrect information. Windows 2000 and later report a value
of -1 to indicate an overflow. Earlier versions of Windows NT report a value
that is the real amount of memory, modulo 4 GB. For this reason, use the GlobalMemoryStatusEx function
instead.

===================引 用 f1driver 文 章===================
冒昧再請問前輩一下,還有其他方法可以使用嗎?
我看到工作管理員都能顯示到3GB,
還是說這問題已經無解??

感謝前輩熱心為小弟回覆


===================引 用 syntax 文 章===================
系統限制
On Intel x86 computers with more than 2 GB and less than 4 GB of memory, the
GlobalMemoryStatus function will always return 2 GB in the
dwTotalPhys member of the MEMORYSTATUS structure. Similarly, if
the total available memory is between 2 and 4 GB, the dwAvailPhys member
of the MEMORYSTATUS structure will be rounded down to 2 GB

yes,成功了,原來還有一個GlobalMemoryStatusEx可用, 太棒了非常謝謝前輩的熱心指導,感激不盡! ^_^