C++ LoadLibrary导致访问冲突

我正在尝试创建一个代理dinput8.dll，以允许在游戏中重新映射键盘，并拼凑了一些指令等，得出以下结论：

#include <windows.h>
#include <strsafe.h>
#pragma pack(1)

HINSTANCE hLThis = 0;
HINSTANCE hL = 0;
FARPROC p[5] = {0};

BOOL WINAPI DllMain(HINSTANCE hInst,DWORD reason,LPVOID) {
    if (reason == DLL_PROCESS_ATTACH) {
        hLThis = hInst;
        hL = LoadLibrary("originaldinput8.dll");
        if (!hL) return false;
        p[0] = GetProcAddress(hL,"DllCanUnloadNow");
        p[1] = GetProcAddress(hL,"DllGetClassObject");
        p[2] = GetProcAddress(hL,"DllRegisterServer");
        p[3] = GetProcAddress(hL,"DllUnregisterServer");
        p[4] = GetProcAddress(hL,"DirectInput8Create");
    } else if (reason == DLL_PROCESS_DETACH) {
        FreeLibrary(hL);
    }

    return 1;
}

extern "C" __declspec(naked) void __stdcall __E__0__()
    {
    __asm
        {
        jmp p[4];
        }
    }

// DllCanUnloadNow
extern "C" __declspec(naked) void __stdcall __E__1__()
    {
    __asm
        {
        jmp p[0];
        }
    }

// DllGetClassObject
extern "C" __declspec(naked) void __stdcall __E__2__()
    {
    __asm
        {
        jmp p[1];
        }
    }

// DllRegisterServer
extern "C" __declspec(naked) void __stdcall __E__3__()
    {
    __asm
        {
        jmp p[2];
        }
    }

// DllUnregisterServer
extern "C" __declspec(naked) void __stdcall __E__4__()
    {
    __asm
        {
        jmp p[3];
        }
    }

该项目构建得很好，生成了DLL，然后我将其放在OriginalInput8.DLL（C:\Windows\SysWOW64\dinput8.DLL的重命名版本）旁边并运行游戏。但它立即崩溃-调试器运行会在调用LoadLibrary时产生以下错误

First-chance exception at 0x75ed75f8 in th06e.exe: 0xC0000005: Access violation reading location 0x00000250.

 *** An Access Violation occurred in "C:\Users\Username\Documents\Visual Studio 2010\Projects\dinput8\Debug\th06e.exe" :

The instruction at 00000000775A1221 tried to read from an invalid address, 0000000000000250

 *** enter .exr 000000000008E030 for the exception record
 ***  enter .cxr 000000000008DB40 for the context
 *** then kb to get the faulting stack

Unhandled exception at 0x75ed75f8 in th06e.exe: 0xC000041D: An unhandled exception was encountered during a user callback.
The program '[5704] th06e.exe: Native' has exited with code -1073740771 (0xc000041d).

这是以前的工作（在我使用64位原始DLL而不是32位DLL的问题之后），但不知何故，它现在已经停止工作，我不确定问题是什么

我不认为查找DLL文件有什么问题-删除DLL文件或使用错误的DLL文件会导致LoadLibrary失败而不会导致崩溃，错误代码193

---

有什么想法吗？

调试器打印下一步操作的指令。遵循它们并调试您得到的结果。MSDN明确指出，不应该从

DllMain

调用

LoadLibrary

，但我仍然不知道为什么在这个特定场景中它会中断。@unkulunkulu哦，我没有意识到。就像我说的，它以前是有效的，但我会努力改变它，然后看看它是否有效。听雷蒙德说。没有人比他更了解这件事了

jmp[4]

没有做你希望它做的事。它不是作为C索引表达式计算的，偏移量4是汇编中的字节偏移量。因此，实际上是在32位模式下跳到p[1]。在64位模式下，您可以跳转到wazoo，如0x250。

First-chance exception at 0x75ed75f8 in th06e.exe: 0xC0000005: Access violation reading location 0x00000250.

 *** An Access Violation occurred in "C:\Users\Username\Documents\Visual Studio 2010\Projects\dinput8\Debug\th06e.exe" :

The instruction at 00000000775A1221 tried to read from an invalid address, 0000000000000250

 *** enter .exr 000000000008E030 for the exception record
 ***  enter .cxr 000000000008DB40 for the context
 *** then kb to get the faulting stack

Unhandled exception at 0x75ed75f8 in th06e.exe: 0xC000041D: An unhandled exception was encountered during a user callback.
The program '[5704] th06e.exe: Native' has exited with code -1073740771 (0xc000041d).