基础 - 获得CPU主频

Posted 2020-10-07 生如逆旅 一苇以航

 1 // 获得cpu主频.cpp : 定义控制台应用程序的入口点。
 2 //
 3 
 4 #include "stdafx.h"
 5 #include <windows.h>
 6 #include <iostream>
 7 
 8 using namespace std;
 9 
10 DWORD CPUClockMHz();
11 
12 int main()
13 {
14     DWORD    CPUMHz;
15     CPUMHz = CPUClockMHz();
16 
17     cout << CPUMHz << endl;
18 
19     return 0;
20 }
21 
22 DWORD CPUClockMHz()
23 {
24     HKEY    KeyHandle;
25     DWORD    CPUMHz;
26     DWORD    ReturnLength = sizeof(DWORD);
27     DWORD    Type = REG_DWORD;
28     RegOpenKey(HKEY_LOCAL_MACHINE,
29         L"HARDWARE\\\\DESCRIPTION\\\\System\\\\CentralProcessor\\\\0", &KeyHandle);
30     RegQueryValueEx(KeyHandle, L"~MHz", NULL, &Type, (PBYTE)&CPUMHz, &ReturnLength);
31     RegCloseKey(KeyHandle);
32     return    CPUMHz;
33 }