From 979022ff03c6f2f43d36fdcad436cf01dc1c6578 Mon Sep 17 00:00:00 2001
From: Christoph von Wittich <christoph_vw@reactos.org>
Date: Mon, 13 Apr 2015 09:53:35 +0000
Subject: [PATCH] [CALC] only update the layout when necessary

svn path=/trunk/; revision=67185
---
 reactos/base/applications/calc/winmain.c | 63 ++++++++++++++----------
 1 file changed, 36 insertions(+), 27 deletions(-)

diff --git a/reactos/base/applications/calc/winmain.c b/reactos/base/applications/calc/winmain.c
index 4100ee16a40..5879c1ec985 100644
--- a/reactos/base/applications/calc/winmain.c
+++ b/reactos/base/applications/calc/winmain.c
@@ -1346,40 +1346,49 @@ static INT_PTR CALLBACK DlgMainProc(HWND hWnd, UINT msg, WPARAM wp, LPARAM lp)
 #endif
             return TRUE;
         case IDM_VIEW_STANDARD:
-            calc.layout = CALC_LAYOUT_STANDARD;
-            calc.action = IDM_VIEW_STANDARD;
-            DestroyWindow(hWnd);
-            save_config();
+            if (calc.layout != CALC_LAYOUT_STANDARD)
+            {
+                calc.layout = CALC_LAYOUT_STANDARD;
+                calc.action = IDM_VIEW_STANDARD;
+                DestroyWindow(hWnd);
+                save_config();
 
-            CheckMenuRadioItem(GetMenu(hWnd),
-                               IDM_VIEW_STANDARD,
-                               IDM_VIEW_CONVERSION,
-                               IDM_VIEW_STANDARD,
-                               MF_BYCOMMAND);
+                CheckMenuRadioItem(GetMenu(hWnd),
+                    IDM_VIEW_STANDARD,
+                    IDM_VIEW_CONVERSION,
+                    IDM_VIEW_STANDARD,
+                    MF_BYCOMMAND);
+            }
             return TRUE;
         case IDM_VIEW_SCIENTIFIC:
-            calc.layout = CALC_LAYOUT_SCIENTIFIC;
-            calc.action = IDM_VIEW_SCIENTIFIC;
-            DestroyWindow(hWnd);
-            save_config();
+            if (calc.layout != CALC_LAYOUT_SCIENTIFIC)
+            {
+                calc.layout = CALC_LAYOUT_SCIENTIFIC;
+                calc.action = IDM_VIEW_SCIENTIFIC;
+                DestroyWindow(hWnd);
+                save_config();
 
-            CheckMenuRadioItem(GetMenu(hWnd),
-                               IDM_VIEW_STANDARD,
-                               IDM_VIEW_CONVERSION,
-                               IDM_VIEW_SCIENTIFIC,
-                               MF_BYCOMMAND);
+                CheckMenuRadioItem(GetMenu(hWnd),
+                    IDM_VIEW_STANDARD,
+                    IDM_VIEW_CONVERSION,
+                    IDM_VIEW_SCIENTIFIC,
+                    MF_BYCOMMAND);
+            }
             return TRUE;
         case IDM_VIEW_CONVERSION:
-            calc.layout = CALC_LAYOUT_CONVERSION;
-            calc.action = IDM_VIEW_CONVERSION;
-            DestroyWindow(hWnd);
-            save_config();
+            if (calc.layout != CALC_LAYOUT_CONVERSION)
+            {
+                calc.layout = CALC_LAYOUT_CONVERSION;
+                calc.action = IDM_VIEW_CONVERSION;
+                DestroyWindow(hWnd);
+                save_config();
 
-            CheckMenuRadioItem(GetMenu(hWnd),
-                               IDM_VIEW_STANDARD,
-                               IDM_VIEW_CONVERSION,
-                               IDM_VIEW_CONVERSION,
-                               MF_BYCOMMAND);
+                CheckMenuRadioItem(GetMenu(hWnd),
+                    IDM_VIEW_STANDARD,
+                    IDM_VIEW_CONVERSION,
+                    IDM_VIEW_CONVERSION,
+                    MF_BYCOMMAND);
+            }
             return TRUE;
         case IDM_VIEW_HEX:
         case IDM_VIEW_DEC: