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該系列案例解析按級(jí)別類(lèi)別排列，如：

[基礎(chǔ)知識(shí)]：類(lèi)別為基礎(chǔ)知識(shí)
1.2：級(jí)別，第一個(gè)1表示屬于最簡(jiǎn)單級(jí)別，后邊的2僅為案例的序數(shù)（不代表難度增加(⊙o⊙)哦）

要求：獲取并顯示當(dāng)前內(nèi)存使用情況(支持4G以上內(nèi)存)

演示截圖：

代碼及詳細(xì)注釋?zhuān)?/font>

本帖隱藏的內(nèi)容

;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; by 小甲魚(yú), http://www.fishc.com
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; MemInfo.asm
; 獲取并顯示當(dāng)前內(nèi)存使用情況(支持4G以上內(nèi)存)
; 對(duì)于4G以上的內(nèi)存獲取，使用 GlobalMemoryStatus 會(huì)有很多問(wèn)題出現(xiàn)
; 這時(shí)候我們要用 GlobalMemoryStatusEx
; 注意，GlobalMemoryStatusEx 需要的 MEMORYSTATUSEX 結(jié)構(gòu)我們要自己定義
; ullTotalPhys 等成員是64位的，我們要自己定義
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 使用 nmake 或下列命令進(jìn)行編譯和鏈接:
; ml /c /coff MemInfo.asm
; rc MemInfo.rc
; Link /subsystem:windows MemInfo.obj MemInfo.res
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
.386
.model flat, stdcall
option casemap :none
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; Include 文件定義
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
include windows.inc
include user32.inc
includelib user32.lib
include kernel32.inc
includelib kernel32.lib
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; Equ 等值定義
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
ICO_MAIN equ 1000
DLG_MAIN equ 100
IDC_INFO equ 101
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 數(shù)據(jù)段
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
.data?
hInstance dd ?
hWinMain dd ?
.const
szInfo db '物理內(nèi)存總數(shù) %I64d KB',0dh,0ah
db '空閑物理內(nèi)存 %I64d KB',0dh,0ah
db '虛擬內(nèi)存總數(shù) %I64d KB',0dh,0ah
db '空閑虛擬內(nèi)存 %I64d KB',0dh,0ah
db '已用內(nèi)存比例 %d%%',0dh,0ah
db '———————————————',0dh,0ah
db '用戶地址空間總數(shù) %I64d KB',0dh,0ah
db '用戶可用地址空間 %I64d KB',0dh,0ah,0
DWORDDWORD STRUCT
lowDWORD DWORD ?
highDWORD DWORD ?
DWORDDWORD ENDS
MEMORYSTATUSEX STRUCT
dwLength DWORD ?
dwMemoryLoad DWORD ?
ullTotalPhys DWORDDWORD <>
ullAvailPhys DWORDDWORD <>
ullTotalPageFile DWORDDWORD <>
ullAvailPageFile DWORDDWORD <>
ullTotalVirtual DWORDDWORD <>
ullAvailVirtual DWORDDWORD <>
ullAvailExtendedVirtual DWORDDWORD <>
MEMORYSTATUSEX ENDS
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; 代碼段
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
.code
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
; _Div1024這個(gè)函數(shù)干嘛呢？就是將大數(shù)除以1024,相當(dāng)于右移10位
; 兩個(gè)參數(shù)通過(guò)傳址調(diào)用，醬紫省下了多余的變量
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
_Div1024 proc uses esi edi _lowDWORD:DWORD, _highDWORD:DWORD
mov esi, _lowDWORD
mov edi, _highDWORD
mov eax, DWORD ptr [esi]
mov edx, DWORD ptr [edi]
shr eax, 10
mov ecx, edx
shl ecx, 22
or eax, ecx
mov DWORD ptr [esi], eax
shr edx, 10
mov DWORD ptr [edi], edx
xor eax, eax
ret
_Div1024 endp
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
_GetMemInfo proc
local @stMemInfo:MEMORYSTATUSEX ; GlobalMemoryStatusEx需要
local @szBuffer[1024]:byte
mov @stMemInfo.dwLength,sizeof @stMemInfo
invoke GlobalMemoryStatusEx,addr @stMemInfo
invoke _Div1024, addr @stMemInfo.ullTotalPhys.lowDWORD, addr @stMemInfo.ullTotalPhys.highDWORD
invoke _Div1024, addr @stMemInfo.ullAvailPhys.lowDWORD, addr @stMemInfo.ullAvailPhys.highDWORD
invoke _Div1024, addr @stMemInfo.ullTotalPageFile.lowDWORD, addr @stMemInfo.ullTotalPageFile.highDWORD
invoke _Div1024, addr @stMemInfo.ullAvailPageFile.lowDWORD, addr @stMemInfo.ullAvailPageFile.highDWORD
invoke _Div1024, addr @stMemInfo.ullTotalVirtual.lowDWORD, addr @stMemInfo.ullTotalVirtual.highDWORD
invoke _Div1024, addr @stMemInfo.ullAvailVirtual.lowDWORD, addr @stMemInfo.ullAvailVirtual.highDWORD
invoke wsprintf,addr @szBuffer,addr szInfo,\
@stMemInfo.ullTotalPhys,@stMemInfo.ullAvailPhys,\
@stMemInfo.ullTotalPageFile,@stMemInfo.ullAvailPageFile,\
@stMemInfo.dwMemoryLoad,\
@stMemInfo.ullTotalVirtual,@stMemInfo.ullAvailVirtual
invoke SetDlgItemText,hWinMain,IDC_INFO,addr @szBuffer
ret
_GetMemInfo endp
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
_ProcDlgMain proc uses ebx edi esi hWnd,wMsg,wParam,lParam
mov eax,wMsg
.if eax == WM_TIMER
call _GetMemInfo
.elseif eax == WM_CLOSE
invoke KillTimer,hWnd,1
invoke EndDialog,hWnd,NULL
;********************************************************************
.elseif eax == WM_INITDIALOG
push hWnd
pop hWinMain
invoke LoadIcon,hInstance,ICO_MAIN
invoke SendMessage,hWnd,WM_SETICON,ICON_BIG,eax
invoke SetTimer,hWnd,1,1000,NULL
call _GetMemInfo
;********************************************************************
.else
mov eax,FALSE
ret
.endif
mov eax,TRUE
ret
_ProcDlgMain endp
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
start:
invoke GetModuleHandle,NULL
mov hInstance,eax
invoke DialogBoxParam,hInstance,DLG_MAIN,NULL,offset _ProcDlgMain,NULL
invoke ExitProcess,NULL
;>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
end start

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本帖隱藏的內(nèi)容