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38 lines
800 B
38 lines
800 B
#include <windows.h>
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#include <wchar.h>
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int wmain(void) {
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DWORD BufSize = MAX_PATH;
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DWORD mhz = MAX_PATH;
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HKEY key;
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long r = RegOpenKeyExW(HKEY_LOCAL_MACHINE,
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L"HARDWARE\\DESCRIPTION\\System\\CentralProcessor\\0", 0, KEY_READ, &key);
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if (r != ERROR_SUCCESS) {
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wprintf(L"RegOpenKeyExW() failed %ld", GetLastError());
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return 1;
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}
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r = RegQueryValueExW(key, L"~MHz", NULL, NULL, (LPBYTE) &mhz, &BufSize);
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if (r != ERROR_SUCCESS) {
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wprintf(L"RegQueryValueExW() failed %ld", GetLastError());
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return 1;
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}
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wprintf(L"CPU speed: %lu MHz\n", mhz);
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r = RegCloseKey(key);
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if (r != ERROR_SUCCESS) {
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wprintf(L"Failed to close registry handle %ld", GetLastError());
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return 1;
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}
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return 0;
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}
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