diff --git a/inc/hook.h b/inc/hook.h
index f7718b2..21a8393 100644
--- a/inc/hook.h
+++ b/inc/hook.h
@@ -9,7 +9,7 @@
 #define SKIP_HOOK3 0x00000002l
 
 typedef struct HOOKLISTDATA { char function_name[32]; PROC new_function; PROC* function; DWORD flags; } HOOKLISTDATA;
-typedef struct HOOKLIST { char module_name[32]; HOOKLISTDATA data[25]; } HOOKLIST;
+typedef struct HOOKLIST { char module_name[32]; HOOKLISTDATA data[26]; } HOOKLIST;
 
 typedef BOOL(WINAPI* GETCURSORPOSPROC)(LPPOINT);
 typedef BOOL(WINAPI* CLIPCURSORPROC)(const RECT*);
@@ -35,6 +35,7 @@ typedef BOOL(WINAPI* DESTROYWINDOWPROC)(HWND);
 typedef int (WINAPI* MAPWINDOWPOINTSPROC)(HWND, HWND, LPPOINT, UINT);
 typedef BOOL (WINAPI* SHOWWINDOWPROC)(HWND, int);
 typedef HWND(WINAPI* GETTOPWINDOWPROC)(HWND);
+typedef HWND(WINAPI* GETFOREGROUNDWINDOWPROC)();
 typedef BOOL(WINAPI* STRETCHBLTPROC)(HDC, int, int, int, int, HDC, int, int, int, int, DWORD);
 
 typedef int (WINAPI* SETDIBITSTODEVICEPROC)(
@@ -76,6 +77,7 @@ extern DESTROYWINDOWPROC real_DestroyWindow;
 extern MAPWINDOWPOINTSPROC real_MapWindowPoints;
 extern SHOWWINDOWPROC real_ShowWindow;
 extern GETTOPWINDOWPROC real_GetTopWindow;
+extern GETFOREGROUNDWINDOWPROC real_GetForegroundWindow;
 extern STRETCHBLTPROC real_StretchBlt;
 extern SETDIBITSTODEVICEPROC real_SetDIBitsToDevice;
 extern STRETCHDIBITSPROC real_StretchDIBits;
diff --git a/inc/winapi_hooks.h b/inc/winapi_hooks.h
index 074b521..686e446 100644
--- a/inc/winapi_hooks.h
+++ b/inc/winapi_hooks.h
@@ -28,6 +28,7 @@ BOOL WINAPI fake_DestroyWindow(HWND hWnd);
 int WINAPI fake_MapWindowPoints(HWND hWndFrom, HWND hWndTo, LPPOINT lpPoints, UINT cPoints);
 BOOL WINAPI fake_ShowWindow(HWND hWnd, int nCmdShow);
 HWND WINAPI fake_GetTopWindow(HWND hWnd);
+HWND WINAPI fake_GetForegroundWindow(void);
 HHOOK WINAPI fake_SetWindowsHookExA(int idHook, HOOKPROC lpfn, HINSTANCE hmod, DWORD dwThreadId);
 int WINAPI fake_GetDeviceCaps(HDC hdc, int index);
 
diff --git a/src/dd.c b/src/dd.c
index 886f672..0aeff1c 100644
--- a/src/dd.c
+++ b/src/dd.c
@@ -781,7 +781,7 @@ HRESULT dd_SetDisplayMode(DWORD dwWidth, DWORD dwHeight, DWORD dwBPP, DWORD dwFl
             }
         }
 
-        if (lock_mouse || (g_ddraw->fullscreen && GetForegroundWindow() == g_ddraw->hwnd))
+        if (lock_mouse || (g_ddraw->fullscreen && real_GetForegroundWindow() == g_ddraw->hwnd))
             mouse_lock();
     }
     else
diff --git a/src/hook.c b/src/hook.c
index e29af3a..d3f304a 100644
--- a/src/hook.c
+++ b/src/hook.c
@@ -41,6 +41,7 @@ DESTROYWINDOWPROC real_DestroyWindow = DestroyWindow;
 MAPWINDOWPOINTSPROC real_MapWindowPoints = MapWindowPoints;
 SHOWWINDOWPROC real_ShowWindow = ShowWindow;
 GETTOPWINDOWPROC real_GetTopWindow = GetTopWindow;
+GETFOREGROUNDWINDOWPROC real_GetForegroundWindow = GetForegroundWindow;
 STRETCHBLTPROC real_StretchBlt = StretchBlt;
 SETDIBITSTODEVICEPROC real_SetDIBitsToDevice = SetDIBitsToDevice;
 STRETCHDIBITSPROC real_StretchDIBits = StretchDIBits;
@@ -82,6 +83,7 @@ static HOOKLIST g_hooks[] =
             { "MapWindowPoints", (PROC)fake_MapWindowPoints, (PROC*)&real_MapWindowPoints, 0 },
             { "ShowWindow", (PROC)fake_ShowWindow, (PROC*)&real_ShowWindow, 0 },
             { "GetTopWindow", (PROC)fake_GetTopWindow, (PROC*)&real_GetTopWindow, 0 },
+            { "GetForegroundWindow", (PROC)fake_GetForegroundWindow, (PROC*)&real_GetForegroundWindow, 0 },
             { "", NULL, NULL, 0 }
         }
     },
diff --git a/src/winapi_hooks.c b/src/winapi_hooks.c
index efe1f3f..e82c09b 100644
--- a/src/winapi_hooks.c
+++ b/src/winapi_hooks.c
@@ -527,6 +527,16 @@ HWND WINAPI fake_GetTopWindow(HWND hWnd)
     return real_GetTopWindow(hWnd);
 }
 
+HWND WINAPI fake_GetForegroundWindow()
+{
+    if (g_ddraw && g_ddraw->windowed && g_ddraw->hwnd)
+    {
+        return g_ddraw->hwnd;
+    }
+
+    return real_GetForegroundWindow();
+}
+
 HHOOK WINAPI fake_SetWindowsHookExA(int idHook, HOOKPROC lpfn, HINSTANCE hmod, DWORD dwThreadId)
 {
     if (idHook == WH_KEYBOARD_LL && hmod && GetModuleHandle("AcGenral") == hmod)
diff --git a/src/wndproc.c b/src/wndproc.c
index 29be4a4..4a30073 100644
--- a/src/wndproc.c
+++ b/src/wndproc.c
@@ -486,7 +486,7 @@ LRESULT CALLBACK fake_WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam
             {
                 mouse_unlock();
 
-                if (GetForegroundWindow() == g_ddraw->hwnd)
+                if (real_GetForegroundWindow() == g_ddraw->hwnd)
                     mouse_lock();
             }
         }
@@ -525,7 +525,7 @@ LRESULT CALLBACK fake_WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam
                     mouse_lock();
                 }
             }
-            else if (g_ddraw->fullscreen && GetForegroundWindow() == g_ddraw->hwnd)
+            else if (g_ddraw->fullscreen && real_GetForegroundWindow() == g_ddraw->hwnd)
             {
                 mouse_lock();
             }