From 4af0067274b1076a41b84849fbd5988992ee25f6 Mon Sep 17 00:00:00 2001
From: Bruno Lopes <brunvonlope@outlook.com>
Date: Sat, 29 Nov 2025 15:22:32 -0300
Subject: [PATCH] app, app-tools: Fix WinMain definition on some executables

Now, it works on both GNU compilers and MSVC.
---
 app-tools/gimp-debug-tool.c | 11 +++++++++++
 app/main.c                  | 16 +++++-----------
 2 files changed, 16 insertions(+), 11 deletions(-)

diff --git a/app-tools/gimp-debug-tool.c b/app-tools/gimp-debug-tool.c
index cc672ad08b..c6bb16d44b 100644
--- a/app-tools/gimp-debug-tool.c
+++ b/app-tools/gimp-debug-tool.c
@@ -121,3 +121,14 @@ main (int    argc,
 
   exit (EXIT_SUCCESS);
 }
+
+#ifdef G_OS_WIN32
+int WINAPI
+WinMain (HINSTANCE hInstance,
+         HINSTANCE hPrevInstance,
+         LPSTR     lpCmdLine,
+         int       nCmdShow)
+{
+  return main (__argc, __argv);
+}
+#endif
\ No newline at end of file
diff --git a/app/main.c b/app/main.c
index 4184cb0242..40a6e2fa57 100644
--- a/app/main.c
+++ b/app/main.c
@@ -918,17 +918,11 @@ main (int    argc,
  * used on MSVC builds only.
  */
 
-#ifdef __GNUC__
-#  ifndef _stdcall
-#    define _stdcall  __attribute__((stdcall))
-#  endif
-#endif
-
-int _stdcall
-WinMain (struct HINSTANCE__ *hInstance,
-         struct HINSTANCE__ *hPrevInstance,
-         char               *lpszCmdLine,
-         int                 nCmdShow)
+int WINAPI
+WinMain (HINSTANCE hInstance,
+         HINSTANCE hPrevInstance,
+         LPSTR     lpCmdLine,
+         int       nCmdShow)
 {
   return main (__argc, __argv);
 }