C++获取计算机硬件信息
获取计算机硬件信息：
- 1、获取屏幕分辨率
-
- 1.1 GetSystemMetrics
- 1.2 GetDeviceCaps
- 1.3 SystemParametersInfo
- 1.4 GetDesktopWindow
- 2、获取屏幕显示比例
- 3、获取计算机名
-
- 3.1 GetComputerName
- 3.2 gethostname
- 4、获取计算机登录用户名
- 5、获取计算机的IP地址
-
- 5.1 gethostbyname
- 6、获取操作系统版本
- 7、获取内存信息
- 8、获取显卡GPU信息
- 9、获取处理器CPU信息
-
- 9.1 注册表方式
- 9.2 cpuid指令方式
- 9.3 WMI方式
- 10、获取硬盘容量信息
- 后续
1、获取屏幕分辨率
1.1 GetSystemMetrics
https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-getsystemmetrics
- 整个屏幕区域。
#include 以上代码运行结果：
宽：1536, 高：864
- 不包括任务栏等区域.
#include 以上代码运行结果：
宽：1536, 高：801
1.2 GetDeviceCaps
https://docs.microsoft.com/en-us/windows/win32/api/wingdi/nf-wingdi-getdevicecaps
int main()
{
HDC hDC = ::GetDC(NULL);
int cx = ::GetDeviceCaps(hDC, HORZRES);
int cy = ::GetDeviceCaps(hDC, VERTRES);
::ReleaseDC(NULL, hDC);
std::cout << "宽：" << cx << ", 高：" << cy << std::endl;
}
以上代码运行结果：
宽：1536, 高：864
#include 以上代码运行结果：
宽：1920, 高：1080
1.3 SystemParametersInfo
https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-systemparametersinfoa
#include 以上代码运行结果：
宽：1536, 高：824
1.4 GetDesktopWindow
https://docs.microsoft.com/en-us/windows/win32/api/winuser/nf-winuser-getdesktopwindow
#include 以上代码运行结果：
宽：1536, 高：864
2、获取屏幕显示比例
- GetDpiForWindow function (winuser.h)
- Minimum supported client Windows 10, version 1607 [desktop apps only]
DPI 的基值定义为 USER _ DEFAULT SCREEN _ _ DPI， 设置为 96。 若要确定监视器的缩放因子，请取 DPI 值并除以 USER _ DEFAULT SCREEN _ _ DPI。 下表提供了一些示例 DPI 值和相关缩放因子。
| DPI 值 | 缩放百分比 |
|---|---|
| 96 | 100% |
| 120 | 125% |
| 144 | 150% |
| 192 | 200% |
#include 3、获取计算机名
3.1 GetComputerName
https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-getcomputernamea
BOOL GetComputerNameA(
[out] LPSTR lpBuffer,
[in, out] LPDWORD nSize
);
BOOL GetComputerNameW(
[out] LPWSTR lpBuffer,
[in, out] LPDWORD nSize
);
#include 3.2 gethostname
https://docs.microsoft.com/en-us/windows/win32/api/winsock/nf-winsock-gethostname
int gethostname(
[out] char *name,
[in] int namelen
);
#include 4、获取计算机登录用户名
https://docs.microsoft.com/en-us/windows/win32/api/winbase/nf-winbase-getusernamea
BOOL GetUserNameA(
[out] LPSTR lpBuffer,
[in, out] LPDWORD pcbBuffer
);
BOOL GetUserNameW(
[out] LPWSTR lpBuffer,
[in, out] LPDWORD pcbBuffer
);
#include 5、获取计算机的IP地址
5.1 gethostbyname
https://docs.microsoft.com/en-us/windows/win32/api/winsock2/nf-winsock2-gethostbyname
hostent *WSAAPI gethostbyname(
const char *name
);
#include 6、获取操作系统版本
| Operating system | Version number |
|---|---|
| Windows 11 | 10.0* |
| Windows 10 | 10.0* |
| Windows Server 2022 | 10.0* |
| Windows Server 2019 | 10.0* |
| Windows Server 2016 | 10.0* |
| Windows 8.1 | 6.3* |
| Windows Server 2012 R2 | 6.3* |
| Windows 8 | 6.2 |
| Windows Server 2012 | 6.2 |
| Windows 7 | 6.1 |
| Windows Server 2008 R2 | 6.1 |
| Windows Server 2008 | 6.0 |
| Windows Vista | 6.0 |
| Windows Server 2003 R2 | 5.2 |
| Windows Server 2003 | 5.2 |
| Windows XP 64-Bit Edition | 5.2 |
| Windows XP | 5.1 |
| Windows 2000 | 5.0 |
https://docs.microsoft.com/zh-cn/windows/win32/api/sysinfoapi/nf-sysinfoapi-getsysteminfo
typedef struct _SYSTEM_INFO {
union {
DWORD dwOemId;
struct {
WORD wProcessorArchitecture;
WORD wReserved;
} DUMMYSTRUCTNAME;
} DUMMYUNIONNAME;
DWORD dwPageSize;
LPVOID lpMinimumApplicationAddress;
LPVOID lpMaximumApplicationAddress;
DWORD_PTR dwActiveProcessorMask;
DWORD dwNumberOfProcessors;
DWORD dwProcessorType;
DWORD dwAllocationGranularity;
WORD wProcessorLevel;
WORD wProcessorRevision;
} SYSTEM_INFO, *LPSYSTEM_INFO;
void GetSystemInfo(
[out] LPSYSTEM_INFO lpSystemInfo
);
#include
OSVERSIONINFOEX osvi;
BOOL bOsVersionInfoEx;
ZeroMemory(&osvi, sizeof(OSVERSIONINFOEX));
// Try calling GetVersionEx using the OSVERSIONINFOEX structure.
// If that fails, try using the OSVERSIONINFO structure.
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFOEX);
if (!(bOsVersionInfoEx = GetVersionEx((OSVERSIONINFO *)&osvi)))
{
osvi.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
if (!GetVersionEx((OSVERSIONINFO *)&osvi))
return FALSE;
}
/*------------------------*/
// Call GetNativeSystemInfo if supported
// or GetSystemInfo otherwise.
typedef void (WINAPI *PGNSI)(LPSYSTEM_INFO);
SYSTEM_INFO si;
ZeroMemory(&si, sizeof(SYSTEM_INFO));
PGNSI pGNSI = (PGNSI)GetProcAddress(
GetModuleHandle(TEXT("kernel32.dll")),
"GetNativeSystemInfo");
if (NULL != pGNSI) pGNSI(&si);
else GetSystemInfo(&si);
switch (si.wProcessorArchitecture)
{
case PROCESSOR_ARCHITECTURE_AMD64:
strcpy_s(processor, "x64");
break;
case PROCESSOR_ARCHITECTURE_IA64:
strcpy_s(processor, "IA64");
break;
default:
strcpy_s(processor, "x86");
break;
}
/*------------------------*/
if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT) {
if (osvi.dwMajorVersion >= 7) {
// Unknown recent version.
}
else if (osvi.dwMajorVersion >= 6) {
if (osvi.dwMinorVersion >= 4)
name = "Windows 10";
else if (osvi.dwMinorVersion >= 3) {
if (osvi.wProductType == VER_NT_WORKSTATION)
name = "Windows 8.1";
else
name = "Windows Server 2012 R2";
}
else if (osvi.dwMinorVersion >= 2) {
if (osvi.wProductType == VER_NT_WORKSTATION)
name = "Windows 8";
else
name = "Windows Server 2012";
}
else if (osvi.dwMinorVersion >= 1) {
if (osvi.wProductType == VER_NT_WORKSTATION)
name = "Windows 7";
else
name = "Windows Server 2008 R2";
}
else {
if (osvi.wProductType == VER_NT_WORKSTATION)
name = "Windows Vista";
else
name = "Windows Server 2008";
}
}
else if (osvi.dwMajorVersion >= 5) {
if (osvi.dwMinorVersion == 0)
name = "Windows 2000";
else if (osvi.dwMinorVersion == 1)
name = "Windows XP";
else if (osvi.dwMinorVersion == 2) {
if (osvi.wProductType == VER_NT_WORKSTATION &&
si.wProcessorArchitecture == PROCESSOR_ARCHITECTURE_AMD64)
name = "Windows XP Professional x64 Edition";
else if (GetSystemMetrics(SM_SERVERR2) != 0) //2==GetSystemMetrics(/*SM_SERVERR2*/89)
name = "Windows Server 2003 R2";
else if (osvi.wSuiteMask/* & VER_SUITE_WH_SERVER*/)
name = "Windows Home Server";
if (GetSystemMetrics(SM_SERVERR2) == 0)
name = "Windows Server 2003";
}
}
else if (osvi.dwMajorVersion == 4) {
if (osvi.dwMinorVersion == 0) {
if (osvi.dwPlatformId == VER_PLATFORM_WIN32_NT)
name = "Windows NT 4.0"; //1996
else if (osvi.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS)
name = "Windows 95";
}
else if (osvi.dwMinorVersion == 10)
name = "Windows 98";
else if (osvi.dwMinorVersion == 90)
name = "Windows Me";
}
else
name = "Windows earlier";
}
if (osvi.wServicePackMajor != 0) {
sprintf_s(versionName, versionNameCapacity, "%s SP%d(%s)", name, osvi.wServicePackMajor, processor);
}
else {
sprintf_s(versionName, versionNameCapacity, "%s (%s)", name, processor);
}
return TRUE;
}
int main()
{
char szOSVer[64];
GetOSVersionName(szOSVer, 64);
printf(szOSVer);
return 0;
}
7、获取内存信息
https://docs.microsoft.com/en-us/windows/win32/api/sysinfoapi/nf-sysinfoapi-globalmemorystatusex
BOOL GlobalMemoryStatusEx(
[in, out] LPMEMORYSTATUSEX lpBuffer
);
typedef struct _MEMORYSTATUSEX {
DWORD dwLength;
DWORD dwMemoryLoad;
DWORDLONG ullTotalPhys;
DWORDLONG ullAvailPhys;
DWORDLONG ullTotalPageFile;
DWORDLONG ullAvailPageFile;
DWORDLONG ullTotalVirtual;
DWORDLONG ullAvailVirtual;
DWORDLONG ullAvailExtendedVirtual;
} MEMORYSTATUSEX, *LPMEMORYSTATUSEX;
#include 运行结果：
8、获取显卡GPU信息
#include 9、获取处理器CPU信息
9.1 注册表方式
//64位操作系统上需要通过管理员权限运行，才能获取正确结果
#include 9.2 cpuid指令方式
#ifdef _WIN64
// method 2: usde winapi, works for x86 and x64
#include 9.3 WMI方式
- 微软官方示例：从本地计算机异步获取 WMI 数据
- 计算机系统硬件类
WMI方式可能需要管理员权限运行。
#include 10、获取硬盘容量信息
https://docs.microsoft.com/en-us/windows/win32/api/fileapi/nf-fileapi-getdiskfreespaceexa
BOOL GetDiskFreeSpaceExA(
[in, optional] LPCSTR lpDirectoryName,
[out, optional] PULARGE_INTEGER lpFreeBytesAvailableToCaller,
[out, optional] PULARGE_INTEGER lpTotalNumberOfBytes,
[out, optional] PULARGE_INTEGER lpTotalNumberOfFreeBytes
);
如下代码运行结果的容量单位为GB。
#include 后续
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