Question

我正在尝试创建一个代理dinput8.dll以允许在游戏中重新键入键盘，并拼凑了一些指令等以提出以下内容：

#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];
        }
    }

它链接的模块定义文件如下：

EXPORTS
DirectInput8Create=__E__0__ @1
DllCanUnloadNow=__E__1__ @2
DllGetClassObject=__E__2__ @3
DllRegisterServer=__E__3__ @4
DllUnregisterServer=__E__4__ @5

项目构建正常并生成DLL，然后我将其放在originaldinput8.dll（C：\ Windows \ SysWOW64 \ dinput8.dll的重命名版本）旁边并运行游戏。但它会立即崩溃 - 调试器运行会产生以下错误，就像调用LoadLibrary一样。

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).

这是以前工作的（在我使用64位原始DLL而不是32位的问题之后）但不知怎的，它现在已停止工作，我不确定是什么问题。

我不认为这是找到DLL文件的问题 - 删除DLL文件或使用错误的文件导致LoadLibrary失败而不会导致崩溃，错误代码193。

有什么想法吗？

LoadLibrary导致访问冲突

0 个答案: