From d0e5f4ac115a04432d4dedc6e2e46686eed3d825 Mon Sep 17 00:00:00 2001
From: Katayama Hirofumi MZ <katayama.hirofumi.mz@gmail.com>
Date: Sat, 27 Oct 2018 20:21:55 +0900
Subject: [PATCH] [WIN32SS][USER32] CloseWindow does minimize, doesn't close
 (#984)

In Windows, user32!CloseWindow minimizes the window. It doesn't close the window actually. This is not a joke. This bad function naming is responsible to MS.
---
 win32ss/user/user32/windows/window.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/win32ss/user/user32/windows/window.c b/win32ss/user/user32/windows/window.c
index 048673ff106..bb42e4de4af 100644
--- a/win32ss/user/user32/windows/window.c
+++ b/win32ss/user/user32/windows/window.c
@@ -127,9 +127,9 @@ ChildWindowFromPointEx(HWND hwndParent,
 BOOL WINAPI
 CloseWindow(HWND hWnd)
 {
-    SendMessageA(hWnd, WM_SYSCOMMAND, SC_CLOSE, 0);
+    PostMessageW(hWnd, WM_SYSCOMMAND, SC_MINIMIZE, 0);
 
-    return HandleToUlong(hWnd);
+    return ValidateHwnd(hWndParent) != NULL;
 }
 
 FORCEINLINE
-- 
2.17.1