SetWindowsHookEx 调用失败，求大侠解疑！

[一路飘过]

DLL代码如下：

#include "stdafx.h"
DWORD WINAPI aThreadProc(LPVOID lpParameter);
LRESULT CALLBACK foo(int nCode,WPARAM wParam,LPARAM lParam)
{
	return 0;
}

BOOL APIENTRY DllMain( HANDLE hModule,DWORD  ul_reason_for_call,LPVOID lpReserved)
{
	if(ul_reason_for_call==DLL_PROCESS_ATTACH)
	{
		CreateThread(NULL,0,(LPTHREAD_START_ROUTINE)aThreadProc,0,0,NULL);
	}
    return TRUE;
}

DWORD WINAPI aThreadProc(LPVOID lpParameter)
{
	HANDLE hProcessSnapshot;
	MODULEENTRY32 me;

	hProcessSnapshot=CreateToolhelp32Snapshot(TH32CS_SNAPMODULE,GetCurrentProcessId());
	me.dwSize=sizeof(MODULEENTRY32);
	Module32First(hProcessSnapshot,&me);

	if(!strcmp(me.szModule,"iexplore.exe"))
	{
		MessageBox(NULL,me.szModule,"ModuleName",MB_OK);
	}

	return 0; 
}

调用DLL的代码：

#include "stdafx.h"

int main(int argc, char* argv[])
{
	HMODULE hHookdll;
	HOOKPROC foo;
	HHOOK hookid;
	hHookdll=LoadLibraryA("popDialog.dll");
	if(hHookdll==NULL)
		printf("load fail!\r\n");
	else
		printf("load success!\r\n");
	foo=(HOOKPROC)GetProcAddress(hHookdll,"foo");
	hookid=SetWindowsHookEx(WH_KEYBOARD,foo,hHookdll,0);
	if(hookid)
		printf("Set HOOK success!\r\n");
	else
		printf("Set HOOK fail!\r\n");
	Sleep(30*1000);
	UnhookWindowsHookEx(hookid);
	return 1;
}

运行exe后，控制台总是打印“load success!,Set HOOK fail!”

[一路飘过]

帖子石沉大海了，我顶！

更改后的DLL代码：

#include "stdafx.h"
#include <windows.h>
#include <stdio.h>

HINSTANCE h_dll;

#pragma data_seg(".MySec")
	HWND h_wnd=NULL;
	HHOOK gg_hHook=NULL;
#pragma data_seg()
#pragma comment(linker,"/section:.MySec,RWS")

BOOL APIENTRY DllMain( HINSTANCE hModule,DWORD  ul_reason_for_call,LPVOID lpReserved)
{
	h_dll=hModule;
    return TRUE;
}

LRESULT CALLBACK my_test(int nCode,WPARAM wParam,LPARAM lParam)
{
      MessageBox(NULL,"hello","hello",0);
      return CallNextHookEx(gg_hHook,nCode,wParam,lParam); 
}

extern "C" _declspec(dllexport) void SetHook(HWND hwnd)
{
	h_wnd=hwnd;
	gg_hHook=SetWindowsHookEx(WH_KEYBOARD,my_test,h_dll,0);
	DWORD dwError=GetLastError();
	if(gg_hHook)
	{
		printf("Set HOOK success!\r\n");
	}
	else
	{
		printf("ErrorNum:%ld Set HOOK fail!\r\n",dwError);
	}
	return ;
}

加载dll的exe程序代码：

#include "stdafx.h"
#include <stdlib.h>
#include <windows.h>

typedef void (*pfunc)(HWND);

int main(int argc, char* argv[])
{
	HINSTANCE hmod;
	pfunc setHook;
	hmod=LoadLibrary("..\\..\\release\\testHook.dll");
	DWORD dwError=GetLastError();
	if(hmod!=NULL)
	{
		printf("load success!\r\n");
		setHook=(pfunc)GetProcAddress(hmod,"SetHook");
		setHook(NULL);
	}
	else
	{
		printf("Error:%ld load fail!\r\n",dwError);
	}
	Sleep(30*10000);
	return 0;
}

这次显示“Set HOOK success!”，但是没有跳出对话框啊，求解？

[一路飘过]

自己先顶一下，别沉了

[海盗医生]

SetWindowsHookEx 是这么用的吗？

进程调用SetWindowsHookEx，回调函数缺是DLL的！

SetWindowsHookEx 和 回调 都放到DLL中

[见习学术士]

GetLastError(); 看看错误代码先

[一路飘过]

[Quote=引用 3 楼 xiaoc1026 的回复:]
GetLastError(); 看看错误代码先
[/Quote]

得到的错误代码为：1427
怎么会是无效的挂接程序呢？