写一个C++调用NtFlushKey 的例子
时间: 2024-03-02 09:51:42 浏览: 18
下面是一个简单的C++调用NtFlushKey函数的例子:
```cpp
#include <iostream>
#include <windows.h>
#include <winternl.h>
#pragma comment(lib, "ntdll.lib")
int main()
{
// 打开注册表键
HKEY hKey;
LONG openResult = RegOpenKeyEx(HKEY_CURRENT_USER, L"SOFTWARE\\Microsoft\\Windows\\CurrentVersion", 0, KEY_WRITE, &hKey);
if (openResult != ERROR_SUCCESS)
{
std::cerr << "Failed to open registry key, error code: " << openResult << std::endl;
return 1;
}
// 获取NtFlushKey函数地址
typedef NTSTATUS(WINAPI *pNtFlushKey)(HANDLE);
pNtFlushKey NtFlushKey = reinterpret_cast<pNtFlushKey>(GetProcAddress(GetModuleHandle(L"ntdll.dll"), "NtFlushKey"));
if (!NtFlushKey)
{
std::cerr << "Failed to get NtFlushKey function address!" << std::endl;
return 1;
}
// 调用NtFlushKey函数
HANDLE hKeyHandle = reinterpret_cast<HANDLE>(hKey);
NTSTATUS flushResult = NtFlushKey(hKeyHandle);
if (flushResult != STATUS_SUCCESS)
{
std::cerr << "Failed to flush registry key, error code: " << flushResult << std::endl;
return 1;
}
std::cout << "Registry key has been flushed successfully!" << std::endl;
// 关闭注册表键
RegCloseKey(hKey);
return 0;
}
```
注意,NtFlushKey函数是Windows内部函数,不在标准C/C++库中。因此,需要包含Windows.h和winternl.h头文件,并且链接ntdll.lib库。此外,需要使用GetProcAddress获取NtFlushKey函数的地址,并使用typedef将其转换为函数指针类型。最后,将打开的注册表键转换为HANDLE类型,并将其传递给NtFlushKey函数。