notifyhook.c File Reference

#include "../utility/utility.h"
#include "notifyhook.h"

Include dependency graph for notifyhook.c:

Go to the source code of this file.

Classes
struct	COPYDATA_STRUCT

Functions
BOOL APIENTRY	DllMain (HINSTANCE hInst, DWORD dwReason, LPVOID param)
LRESULT CALLBACK	NotifyHookProc (int code, WPARAM wparam, LPARAM lparam)
UINT	InstallNotifyHook ()
void	DeinstallNotifyHook ()
void	GetWindowModulePath (HWND hwnd)
DECL_NOTIFYHOOK int	GetWindowModulePathCopyData (LPARAM lparam, HWND *phwnd, LPSTR buffer, int size)

Variables
static HINSTANCE	s_hInstance
static UINT	WM_GETMODULEPATH
static HHOOK	s_hNotifyHook

Function Documentation

DeinstallNotifyHook()

void DeinstallNotifyHook

(

void

)

Definition at line 90 of file notifyhook.c.

{
    UnhookWindowsHookEx(s_hNotifyHook);
    s_hNotifyHook = 0;
}

Referenced by NotifyHook::~NotifyHook().

DllMain()

BOOL APIENTRY DllMain	(	HINSTANCE	hInst,
		DWORD	dwReason,
		LPVOID	param
	)

Definition at line 39 of file notifyhook.c.

{
    switch(dwReason) {
      case DLL_PROCESS_ATTACH:
        s_hInstance = hInst;
        DisableThreadLibraryCalls(hInst);
        WM_GETMODULEPATH = RegisterWindowMessageA("WM_GETMODULEPATH");
        break;
    }
 
    return TRUE;
}

GetWindowModulePath()

void GetWindowModulePath

(

HWND

hwnd

)

Definition at line 97 of file notifyhook.c.

{
    SendMessage(hwnd, WM_GETMODULEPATH, 0, 0);
}

GetWindowModulePathCopyData()

DECL_NOTIFYHOOK int GetWindowModulePathCopyData	(	LPARAM	lparam,
		HWND *	phwnd,
		LPSTR	buffer,
		int	size
	)

Definition at line 103 of file notifyhook.c.

{
    PCOPYDATASTRUCT data = (PCOPYDATASTRUCT) lparam;
 
    if (data->dwData == WM_GETMODULEPATH) {
        struct COPYDATA_STRUCT* cds = (struct COPYDATA_STRUCT*) data->lpData;
 
        *phwnd = cds->_hwnd;
        lstrcpyn(buffer, cds->_path, size);
 
        return cds->_len;
    } else
        return 0;
}

Referenced by NotifyHook::ModulePathCopyData().

InstallNotifyHook()

UINT InstallNotifyHook

(

void

)

Definition at line 83 of file notifyhook.c.

{
    s_hNotifyHook = SetWindowsHookEx(WH_GETMESSAGE, NotifyHookProc, s_hInstance, 0);
 
    return WM_GETMODULEPATH;
}

NotifyHookProc()

LRESULT CALLBACK NotifyHookProc	(	int	code,
		WPARAM	wparam,
		LPARAM	lparam
	)

Definition at line 59 of file notifyhook.c.

{
    MSG* pmsg = (MSG*)lparam;
 
    if (pmsg->message == WM_GETMODULEPATH) {
        struct COPYDATA_STRUCT cds;
        COPYDATASTRUCT data;
 
        cds._hwnd = pmsg->hwnd;
        cds._len = GetWindowModuleFileNameA(pmsg->hwnd, cds._path, COUNTOF(cds._path));
 
        data.dwData = WM_GETMODULEPATH;
        data.cbData = sizeof(cds);
        data.lpData = &cds;
 
        SendMessage((HWND)pmsg->wParam, WM_COPYDATA, (WPARAM)pmsg->hwnd, (LPARAM)&data);
 
        return 0;
    }
 
    return CallNextHookEx(s_hNotifyHook, code, wparam, lparam);
}

Referenced by InstallNotifyHook().

Variable Documentation

s_hInstance

HINSTANCE s_hInstance

static

Definition at line 34 of file notifyhook.c.

Referenced by DllMain(), and InstallNotifyHook().

s_hNotifyHook

HHOOK s_hNotifyHook

static

Definition at line 36 of file notifyhook.c.

Referenced by DeinstallNotifyHook(), InstallNotifyHook(), and NotifyHookProc().

WM_GETMODULEPATH

UINT WM_GETMODULEPATH

static

Definition at line 35 of file notifyhook.c.

Referenced by DllMain(), GetWindowModulePath(), GetWindowModulePathCopyData(), InstallNotifyHook(), and NotifyHookProc().