!!!!!!!!怎么在VC程序中取得CPU主频以及总线频率？!!!!!!!!!(解决立即结贴！)

Question

如题

Answer 1

HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0

Answer 2

这个问题我以前回答过大概的方法就是用一个1秒的定时器，在利用586指令 rdtsc(asm)
来计算
我把代码
.586
.model flat, stdcall
option casemap :none   ; case sensitiveinclude windows.inc
include user32.inc
include kernel32.inc
include comctl32.inc
include comdlg32.incincludelib user32.lib
includelib kernel32.lib
includelib comctl32.lib
includelib comdlg32.libDLG_MAIN equ 1000
ID_SPEED equ 1001 .data?dwTickCount dd ?
dwTSC dd ?,?
hInstance dd ?
szBuffer db 256 dup (?)_ProcDlgMain PROTO :DWORD,:DWORD,:DWORD,:DWORD .dataszSpeed db "你的CPU主频为 %d MHz",0 .codeinclude Win.asm;********************************************************************
_ProcDlgMain proc uses ebx edi esi, \
hWnd:DWORD,wMsg:DWORD,wParam:DWORD,lParam:DWORD
local @stPoint:POINT
local @hWindow mov eax,wMsg
.if eax == WM_CLOSE
invoke EndDialog,hWnd,NULL
invoke KillTimer,hWnd,1
.elseif eax == WM_INITDIALOG
invoke _CenterWindow,hWnd
invoke GetTickCount ;TSC 初始值
mov dwTickCount,eax rdtsc
mov dwTSC,eax
mov dwTSC+4,edx
invoke SetTimer,hWnd,1,1000,NULL
.elseif eax == WM_TIMER
invoke GetTickCount
push eax
sub eax,dwTickCount
pop dwTickCount
push eax rdtsc
push edx
push eax
sub eax,dwTSC
sbb edx,dwTSC+4
pop dwTSC
pop dwTSC+4 mov ecx,1000000
div ecx ;除以1Mhz=1000000hz
.if edx >= 500000h ;四舍五入
inc eax
.endif
mov ecx,1000
mul ecx ;1秒=1000毫秒
pop ecx ;pop出经过的毫秒数
div ecx invoke wsprintf,offset szBuffer,offset szSpeed,eax
invoke SendDlgItemMessage,hWnd,ID_SPEED,\
WM_SETTEXT,0,offset szBuffer
.else
;********************************************************************
; 注意：对话框的消息处理后，要返回 TRUE,对没有处理的消息
; 要返回 FALSE
;********************************************************************
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,0
invoke ExitProcess,NULL end start