From ab773f6469eec19ce8da1f8d62a24ce7b6893e55 Mon Sep 17 00:00:00 2001
From: FunkyFr3sh <cc.red.alert.1@googlemail.com>
Date: Tue, 18 Oct 2022 22:21:42 +0200
Subject: [PATCH] hook GetTopWindow

---
 inc/hook.h         |  4 +++-
 inc/winapi_hooks.h |  1 +
 src/hook.c         |  2 ++
 src/winapi_hooks.c | 10 ++++++++++
 4 files changed, 16 insertions(+), 1 deletion(-)

diff --git a/inc/hook.h b/inc/hook.h
index 725ad40..f7718b2 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[24]; } HOOKLIST;
+typedef struct HOOKLIST { char module_name[32]; HOOKLISTDATA data[25]; } HOOKLIST;
 
 typedef BOOL(WINAPI* GETCURSORPOSPROC)(LPPOINT);
 typedef BOOL(WINAPI* CLIPCURSORPROC)(const RECT*);
@@ -34,6 +34,7 @@ typedef HWND(WINAPI* CREATEWINDOWEXAPROC)(DWORD, LPCSTR, LPCSTR, DWORD, int, int
 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 BOOL(WINAPI* STRETCHBLTPROC)(HDC, int, int, int, int, HDC, int, int, int, int, DWORD);
 
 typedef int (WINAPI* SETDIBITSTODEVICEPROC)(
@@ -74,6 +75,7 @@ extern CREATEWINDOWEXAPROC real_CreateWindowExA;
 extern DESTROYWINDOWPROC real_DestroyWindow;
 extern MAPWINDOWPOINTSPROC real_MapWindowPoints;
 extern SHOWWINDOWPROC real_ShowWindow;
+extern GETTOPWINDOWPROC real_GetTopWindow;
 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 4dc1f93..074b521 100644
--- a/inc/winapi_hooks.h
+++ b/inc/winapi_hooks.h
@@ -27,6 +27,7 @@ BOOL WINAPI fake_EnableWindow(HWND hWnd, BOOL bEnable);
 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);
 HHOOK WINAPI fake_SetWindowsHookExA(int idHook, HOOKPROC lpfn, HINSTANCE hmod, DWORD dwThreadId);
 int WINAPI fake_GetDeviceCaps(HDC hdc, int index);
 
diff --git a/src/hook.c b/src/hook.c
index a958b42..e29af3a 100644
--- a/src/hook.c
+++ b/src/hook.c
@@ -40,6 +40,7 @@ CREATEWINDOWEXAPROC real_CreateWindowExA = CreateWindowExA;
 DESTROYWINDOWPROC real_DestroyWindow = DestroyWindow;
 MAPWINDOWPOINTSPROC real_MapWindowPoints = MapWindowPoints;
 SHOWWINDOWPROC real_ShowWindow = ShowWindow;
+GETTOPWINDOWPROC real_GetTopWindow = GetTopWindow;
 STRETCHBLTPROC real_StretchBlt = StretchBlt;
 SETDIBITSTODEVICEPROC real_SetDIBitsToDevice = SetDIBitsToDevice;
 STRETCHDIBITSPROC real_StretchDIBits = StretchDIBits;
@@ -80,6 +81,7 @@ static HOOKLIST g_hooks[] =
             { "DestroyWindow", (PROC)fake_DestroyWindow, (PROC*)&real_DestroyWindow, 0 },
             { "MapWindowPoints", (PROC)fake_MapWindowPoints, (PROC*)&real_MapWindowPoints, 0 },
             { "ShowWindow", (PROC)fake_ShowWindow, (PROC*)&real_ShowWindow, 0 },
+            { "GetTopWindow", (PROC)fake_GetTopWindow, (PROC*)&real_GetTopWindow, 0 },
             { "", NULL, NULL, 0 }
         }
     },
diff --git a/src/winapi_hooks.c b/src/winapi_hooks.c
index fcd8143..efe1f3f 100644
--- a/src/winapi_hooks.c
+++ b/src/winapi_hooks.c
@@ -517,6 +517,16 @@ BOOL WINAPI fake_ShowWindow(HWND hWnd, int nCmdShow)
     return real_ShowWindow(hWnd, nCmdShow);
 }
 
+HWND WINAPI fake_GetTopWindow(HWND hWnd)
+{
+    if (g_ddraw && g_ddraw->windowed && g_ddraw->hwnd && !hWnd)
+    {
+        return g_ddraw->hwnd;
+    }
+
+    return real_GetTopWindow(hWnd);
+}
+
 HHOOK WINAPI fake_SetWindowsHookExA(int idHook, HOOKPROC lpfn, HINSTANCE hmod, DWORD dwThreadId)
 {
     if (idHook == WH_KEYBOARD_LL && hmod && GetModuleHandle("AcGenral") == hmod)