From c7312c2c07b73958ede09bfa4bc69c6d31a6f680 Mon Sep 17 00:00:00 2001
From: FunkyFr3sh <cc.red.alert.1@googlemail.com>
Date: Wed, 12 Jun 2024 02:47:31 +0200
Subject: [PATCH] allow to toggle windowed mode with F4 in HoMM games

---
 inc/config.h  | 1 +
 src/config.c  | 7 +++++++
 src/wndproc.c | 9 +++++++++
 3 files changed, 17 insertions(+)

diff --git a/inc/config.h b/inc/config.h
index f6744a4..f0b8275 100644
--- a/inc/config.h
+++ b/inc/config.h
@@ -103,6 +103,7 @@ typedef struct CNCDDRAWCONFIG
     BOOL stronghold_hack;
     BOOL mgs_hack;
     BOOL tlc_hack;
+    BOOL homm_hack;
 
 } CNCDDRAWCONFIG;
 
diff --git a/src/config.c b/src/config.c
index 79a945d..80c787e 100644
--- a/src/config.c
+++ b/src/config.c
@@ -113,6 +113,7 @@ void cfg_load()
     GET_BOOL(g_config.stronghold_hack, "stronghold_hack", FALSE);
     GET_BOOL(g_config.mgs_hack, "mgs_hack", FALSE);
     GET_BOOL(g_config.tlc_hack, "tlc_hack", FALSE);
+    GET_BOOL(g_config.homm_hack, "homm_hack", FALSE);
 
     GameHandlesClose = GameHandlesClose || g_config.infantryhack;
 
@@ -874,11 +875,17 @@ static void cfg_create_ini()
             "[Heroes3]\n"
             "renderer=opengl\n"
             "game_handles_close=true\n"
+            "homm_hack=true\n"
             "\n"
             "; Heroes of Might and Magic III HD Mod\n"
             "[Heroes3 HD]\n"
             "renderer=opengl\n"
             "game_handles_close=true\n"
+            "homm_hack=true\n"
+            "\n"
+            "; Heroes of Might and Magic IV\n"
+            "[heroes4]\n"
+            "homm_hack=true\n"
             "\n"
             "; Hard Truck: Road to Victory\n"
             "[htruck]\n"
diff --git a/src/wndproc.c b/src/wndproc.c
index 43abdcf..ebde744 100644
--- a/src/wndproc.c
+++ b/src/wndproc.c
@@ -777,6 +777,12 @@ LRESULT CALLBACK fake_WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam
     }
     case WM_KEYDOWN:
     {
+        if (g_config.homm_hack && wParam == VK_F4) /* Heroes of Might and Magic 3 and 4 */
+        {
+            util_toggle_fullscreen();
+            return 0;
+        }
+
         if (g_config.hotkeys.unlock_cursor1 && 
             (wParam == VK_CONTROL || wParam == g_config.hotkeys.unlock_cursor1))
         {
@@ -808,6 +814,9 @@ LRESULT CALLBACK fake_WndProc(HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam
     }
     case WM_KEYUP:
     {
+        if (g_config.homm_hack && wParam == VK_F4) /* Heroes of Might and Magic 3 and 4 */
+            return 0;
+
         if (g_config.hotkeys.screenshot && wParam == g_config.hotkeys.screenshot)
             ss_take_screenshot(g_ddraw.primary);