[HaBo]

/*
 ============================================================================
 Name        : Pipette.c
 Author      : SleepProgger
 Version     :
 Copyright   : Your copyright notice
 Description : HookTest
 ============================================================================
 */

#include <stdio.h>
#include <stdlib.h>
#include <windows.h>

typedef BOOL (CALLBACK *MYFUNC)(void);

MYFUNC InstallHook;
MYFUNC UninstallHook;

void init(){
	InstallHook = NULL;
	UninstallHook = NULL;
}

LRESULT CALLBACK MouseProc(int nCode, WPARAM wParam, LPARAM lParam){
	printf("%s", "Callback");
	return 0;
}

int main(void) {
	init();
	HINSTANCE hDll = LoadLibrary("HookTest.dll");
	if(hDll != NULL){
		printf("%s\n", "lib loading failure");
		return -1;
	}

	InstallHook = (MYFUNC)GetProcAddress(hDll, "InstallHook");
	if(InstallHook != NULL){
		printf("%s\n", "install func loading failure");
		return -1;
	}
	UninstallHook = (MYFUNC)GetProcAddress(hDll, "UninstallHook");
	if(UninstallHook != NULL){
		printf("%s\n", "uninstall func loading failure");
		return -1;
	}

	FreeLibrary(hDll);

	return EXIT_SUCCESS;
}

#ifndef _DLL_H_
#define _DLL_H_
#endif

#include <windows.h>

#if BUILDING_DLL
# define DLLIMPORT _declspec (dllexport)
#else /*Not building dll*/
# define DLLIMPORT _declspec (dllimport)
#endif /*Not building dll*/

#define SHARED __attribute__((section(".shr"), shared))

DLLIMPORT BOOL InstallHook();
DLLIMPORT BOOL UninstallHook();

LRESULT CALLBACK MouseProc(int nCode, WPARAM wParam, LPARAM lParam);

/*
 * dllmain.c
 *
 *  Created on: 18.10.2009
 *      Author: SleepProgger
 */
#include "dll.h"

HHOOK g_hMouseHook SHARED = NULL;
HINSTANCE g_hInst SHARED = NULL;

BOOL APIENTRY DLLMain(HINSTANCE hInts, DWORD reason, LPVOID reserved){
	g_hInst = hInts;
	return TRUE;
}

DLLIMPORT BOOL installHook(){
	if(g_hMouseHook != NULL){
		return TRUE;
	}
	g_hMouseHook = SetWindowsHookEx(WH_MOUSE, MouseProc, g_hInst, 0);
	if(g_hMouseHook == NULL){
		return FALSE;
	}
	//TODO changed
	return TRUE;
}

DLLIMPORT BOOL uninstallHook(){
	if(g_hMouseHook != NULL){
		UnhookWindowsHookEx(g_hMouseHook);
		g_hMouseHook = NULL;
	}
	return TRUE;
}

LRESULT CALLBACK MouseProc(int nCode, WPARAM wParam, LPARAM lParam){
	if(nCode < 0){
		return CallNextHookEx(g_hMouseHook, nCode, wParam, lParam);
	}

	if(nCode == HC_ACTION){
		if( (wParam == WM_LBUTTONDOWN) || (wParam == WM_NCLBUTTONDOWN) ){
			MOUSEHOOKSTRUCT *mhs = (MOUSEHOOKSTRUCT*)lParam;
			HWND caller = FindWindow("Pipette", NULL);
			if(caller != NULL){
				PostMessage(caller, WM_USER+123, 0, MAKELPARAM(mhs->pt.x, mhs->pt.y));
			}
		}
	}
	return CallNextHookEx(g_hMouseHook, nCode, wParam, lParam);
}