c++ 在main()[closed]中声明函数时出现块作用域错误

eblbsuwk  于 2024-01-09  发布在  其他
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我正在尝试创建一个程序，它将为一堆消息框生成随机数，然后蓝屏。不要担心，它实际上不会伤害任何人的文件或程序。我一直无法运行我的程序，因为WinEventProc有一个错误，说a block-scope function may only have extern storage class。我一直在main内部声明我的函数。换句话说，我一直把我的整个程序放在main()里面，所以我想知道我是否不能这样做。

  1. #include <iostream>
  2. #include <random>
  3. #include <Windows.h>
  4. #include <winternl.h>
  5. #include "Uh_Oh.h"
  6. using namespace std;
  7. typedef NTSTATUS(NTAPI* pdef_NtRaiseHardError)(NTSTATUS ErrorStatus, ULONG NumberOfParameters, ULONG UnicodeStringParameterMask OPTIONAL, PULONG_PTR Parameters, ULONG ResponseOption, PULONG Response);
  8. typedef NTSTATUS(NTAPI* pdef_RtlAdjustPrivilege)(ULONG Privilege, BOOLEAN Enable, BOOLEAN CurrentThread, PBOOLEAN Enabled);
  10. int main()
  11. {
  12.     // Random #'s generated and put in variables
  13.     random_device dev;
  14.     mt19937 rng(dev());
  15.     uniform_int_distribution<std::mt19937::result_type> distx(1, 1920); // distribution for x in range [1, 1920]
  16.     uniform_int_distribution<std::mt19937::result_type> disty(1, 1080); // distribution for y in range [1, 1080]
  17.     int randomx;
  18.     int randomy;
  19.     randomx = distx(rng);
  20.     randomy = disty(rng);
  21.     thread_local int MsgBox_X;
  22.     thread_local int MsgBox_Y;
  24.     static void CALLBACK WinEventProc(HWINEVENTHOOK hWinEventHook, DWORD event, HWND hwnd, LONG idObject, LONG idChild, DWORD dwEventThread, DWORD dwmsEventTime)
  25.     {
  26.         SetWindowPos(hwnd, NULL, MsgBox_X, MsgBox_Y, 0, 0, SWP_NOSIZE | SWP_NOZORDER);
  27.     }
  29.     int MessageBoxPos(HWND hWnd, LPCTSTR lpText, LPCTSTR lpCaption, UINT uType, int X, int Y)
  30.     {
  31.         HWINEVENTHOOK hHook = SetWinEventHook(EVENT_OBJECT_CREATE, EVENT_OBJECT_CREATE, NULL, &WinEventProc, GetCurrentProcessId(), GetCurrentThreadId(), WINEVENT_INCONTEXT);
  32.         MsgBox_X = X;
  33.         MsgBox_Y = Y;
  34.         int result = MessageBox(hWnd, lpText, lpCaption, uType);
  35.         if (hHook)  UnhookWinEvent(hHook);
  36.         return result;
  37.     }
  39.     void _MessageBox()
  40.     {
  41.         UhOh = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  42.         // ... call same MessageBoxPos function a bunch of more times
  43.         // UhOh2
  44.         // UhOh3
  45.     }
  47.     std::this_thread::sleep_for(std::chrono::milliseconds(2000));
  49.     typedef NTSTATUS(NTAPI* pdef_NtRaiseHardError)(NTSTATUS ErrorStatus, ULONG NumberOfParameters, ULONG UnicodeStringParameterMask OPTIONAL, PULONG_PTR Parameters, ULONG ResponseOption, PULONG Response);
  50.     typedef NTSTATUS(NTAPI* pdef_RtlAdjustPrivilege)(ULONG Privilege, BOOLEAN Enable, BOOLEAN CurrentThread, PBOOLEAN Enabled);
  51.     BOOLEAN bEnabled;
  52.     ULONG uResp;
  53.     LPVOID lpFuncAddress = GetProcAddress(LoadLibraryA("ntdll.dll"), "RtlAdjustPrivilege");
  54.     LPVOID lpFuncAddress2 = GetProcAddress(GetModuleHandle(L"ntdll.dll"), "NtRaiseHardError");
  55.     pdef_RtlAdjustPrivilege NtCall = (pdef_RtlAdjustPrivilege)lpFuncAddress;
  56.     pdef_NtRaiseHardError NtCall2 = (pdef_NtRaiseHardError)lpFuncAddress2;
  57.     NTSTATUS NtRet = NtCall(19, TRUE, FALSE, &bEnabled);
  58.     NtCall2(STATUS_FLOAT_MULTIPLE_FAULTS, 0, 0, 0, 6, &uResp);
  59.     return 0;
  60. }

字符串

c++

1条答案

按热度按时间
uklbhaso

uklbhaso1#

你必须移动所有这些代码：

  1. static void CALLBACK WinEventProc(HWINEVENTHOOK hWinEventHook, DWORD event, HWND hwnd, LONG idObject, LONG idChild, DWORD dwEventThread, DWORD dwmsEventTime)
  2. {
  3.     SetWindowPos(hwnd, NULL, MsgBox_X, MsgBox_Y, 0, 0, SWP_NOSIZE | SWP_NOZORDER);
  4. }
  6. int MessageBoxPos(HWND hWnd, LPCTSTR lpText, LPCTSTR lpCaption, UINT uType, int X, int Y)
  7. {
  8.     HWINEVENTHOOK hHook = SetWinEventHook(EVENT_OBJECT_CREATE, EVENT_OBJECT_CREATE, NULL, &WinEventProc, GetCurrentProcessId(), GetCurrentThreadId(), WINEVENT_INCONTEXT);
  9.     MsgBox_X = X;
  10.     MsgBox_Y = Y;
  11.     int result = MessageBox(hWnd, lpText, lpCaption, uType);
  12.     if (hHook)  UnhookWinEvent(hHook);
  13.     return result;
  14. }
  16. void _MessageBox()
  17. {
  18.     UhOh = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  19.     UhOh2 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  20.     UhOh3 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  21.     UhOh4 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  22.     UhOh5 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  23.     UhOh6 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  24.     UhOh7 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  25.     UhOh8 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  26.     UhOh9 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  27.     UhOh10 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  28.     UhOh11 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  29.     UhOh12 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  30.     UhOh13 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  31.     UhOh14 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  32.     UhOh15 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  33.     UhOh16 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  34.     UhOh17 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  35.     UhOh18 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  36.     UhOh19 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  37.     UhOh20 = MessageBoxPos(NULL, TEXT("Uh Oh!"), TEXT("Your computer ran out of memory! Windows will now crash."), MB_ICONERROR | MB_OK, randomx, randomy);
  39. }

字符串
行前

  1. int main()

型
不能在其他函数中定义函数。

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