#include <windows.h>
#include "mousehook.h"


static HHOOK s_hHook;
static HANDLE s_hModule;
static HANDLE s_hEvent;

/*****************************************************/
BOOL WINAPI DllMain (HANDLE hDLL, DWORD dwReason, LPVOID lpReserved)
{
    s_hModule = hDLL;
    switch (dwReason) 
    {
    case DLL_PROCESS_ATTACH:
	break;
    case DLL_THREAD_ATTACH:
	break;
    case DLL_THREAD_DETACH:
	break;
    case DLL_PROCESS_DETACH:
	break;
    }
    
    return TRUE;
}

/*****************************************************/
LRESULT CALLBACK MouseProc(int nCode,  WPARAM wParam,  LPARAM lParam   )
{
    HANDLE hHookEvent = NULL;
    MOUSEHOOKSTRUCT * pmhs = (MOUSEHOOKSTRUCT *)lParam;
    static POINT s_pt;
    static int s_First = 1;
    
    if( s_First == 0 )
    {
	if( s_pt.x != pmhs->pt.x || s_pt.y != pmhs->pt.y )
	{
	    // On signale l'evenement des que la souris bouge
	    hHookEvent = OpenEvent( EVENT_ALL_ACCESS, FALSE, HOOKEVENTNAME );
	    if( hHookEvent )
	    {
		SetEvent( hHookEvent );
		CloseHandle( hHookEvent );
	    }
	}
    }
    else
    {
	s_First = 0;
    }
    
    // Sauve les coordonnees de la souris
    s_pt = pmhs->pt;

    return CallNextHookEx( s_hHook, nCode, wParam, lParam );
}



/*****************************************************/
int InstallCafardHook()
{
    if( s_hHook ) UnInstallCafardHook();
    s_hHook = SetWindowsHookEx( WH_MOUSE, MouseProc, s_hModule, 0 );
    return (s_hHook!= NULL);
}

/*****************************************************/
void UnInstallCafardHook()
{
    if( s_hHook ) UnhookWindowsHookEx(s_hHook);
    s_hHook = NULL;
}