[gadamopoulos] 53026: [uxtheme] - Do not try to load the current theme when uxtheme loads. Instead, load the current theme when theme hooks are installed or when the application receives a WM_THEME...

Author: gadamopoulos
Date: Tue Aug  2 13:38:58 2011
New Revision: 53026

URL: http://svn.reactos.org/svn/reactos?rev=53026&view=rev
Log:
[uxtheme]
- Do not try to load the current theme when uxtheme loads. Instead, load the current theme
when theme hooks are installed or when the application receives a WM_THEMECHANGED message.
This allows us to change themes without restarting the running applications.
- Use the default behaviour of DefWindowProc from user32 when themes are not active. This
allows us to have api hooks enabled when themes are disabled.

Modified:
    branches/GSoC_2011/ThemesSupport/dll/win32/uxtheme/system.c
    branches/GSoC_2011/ThemesSupport/dll/win32/uxtheme/themehooks.c
    branches/GSoC_2011/ThemesSupport/dll/win32/uxtheme/uxthemedll.h

Modified: branches/GSoC_2011/ThemesSupport/dll/win32/uxtheme/system.c
URL:
http://svn.reactos.org/svn/reactos/branches/GSoC_2011/ThemesSupport/dll/win…
==============================================================================
--- branches/GSoC_2011/ThemesSupport/dll/win32/uxtheme/system.c [iso-8859-1] (original)
+++ branches/GSoC_2011/ThemesSupport/dll/win32/uxtheme/system.c [iso-8859-1] Tue Aug  2
13:38:58 2011
@@ -148,7 +148,7 @@
  *
  * Set the current active theme from the registry
  */
-static void UXTHEME_LoadTheme(void)
+void UXTHEME_LoadTheme(void)
 {
     HKEY hKey;
     DWORD buffsize;
@@ -542,8 +542,6 @@
     atSubAppName         = GlobalAddAtomW(szSubAppName);
     atSubIdList          = GlobalAddAtomW(szSubIdList);
     atDialogThemeEnabled = GlobalAddAtomW(szDialogThemeEnabled);
-
-    UXTHEME_LoadTheme();
 }
 
 /***********************************************************************

Modified: branches/GSoC_2011/ThemesSupport/dll/win32/uxtheme/themehooks.c
URL:
http://svn.reactos.org/svn/reactos/branches/GSoC_2011/ThemesSupport/dll/win…
==============================================================================
--- branches/GSoC_2011/ThemesSupport/dll/win32/uxtheme/themehooks.c [iso-8859-1]
(original)
+++ branches/GSoC_2011/ThemesSupport/dll/win32/uxtheme/themehooks.c [iso-8859-1] Tue Aug 
2 13:38:58 2011
@@ -29,6 +29,14 @@
 static LRESULT CALLBACK
 ThemeDefWindowProcW(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
 {      
+    if(!IsThemeActive())
+    {
+        return user32ApiHook.DefWindowProcW(hWnd, 
+                                            Msg, 
+                                            wParam, 
+                                            lParam);
+    }
+
     return ThemeWndProc(hWnd, 
                         Msg, 
                         wParam, 
@@ -39,11 +47,32 @@
 static LRESULT CALLBACK
 ThemeDefWindowProcA(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
 {
+    if(!IsThemeActive())
+    {
+        return user32ApiHook.DefWindowProcA(hWnd, 
+                                            Msg, 
+                                            wParam, 
+                                            lParam);
+    }
+
     return ThemeWndProc(hWnd, 
                         Msg, 
                         wParam, 
                         lParam, 
                         user32ApiHook.DefWindowProcA);
+}
+
+static LRESULT CALLBACK
+ThemePreWindowProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam, ULONG_PTR
ret,PDWORD unknown)
+{
+    switch(Msg)
+    {
+        case WM_THEMECHANGED:
+            UXTHEME_LoadTheme();
+            return 0;
+    }
+
+    return 0;
 }
 
 BOOL CALLBACK 
@@ -60,6 +89,7 @@
     
     puah->DefWindowProcA = ThemeDefWindowProcA;
     puah->DefWindowProcW = ThemeDefWindowProcW;
+    puah->PreWndProc = ThemePreWindowProc;
     puah->DefWndProcArray.MsgBitArray  = gabDWPmessages;
     puah->DefWndProcArray.Size = UAHOWP_MAX_SIZE;
     puah->WndProcArray.MsgBitArray = gabMSGPmessages;
@@ -100,7 +130,7 @@
     UAH_HOOK_MESSAGE(puah->WndProcArray, WM_THEMECHANGED);
     UAH_HOOK_MESSAGE(puah->WndProcArray, WM_UAHINIT);
 
-    UXTHEME_InitSystem(hDllInst);
+    UXTHEME_LoadTheme();
 
     return TRUE;
 }

Modified: branches/GSoC_2011/ThemesSupport/dll/win32/uxtheme/uxthemedll.h
URL:
http://svn.reactos.org/svn/reactos/branches/GSoC_2011/ThemesSupport/dll/win…
==============================================================================
--- branches/GSoC_2011/ThemesSupport/dll/win32/uxtheme/uxthemedll.h [iso-8859-1]
(original)
+++ branches/GSoC_2011/ThemesSupport/dll/win32/uxtheme/uxthemedll.h [iso-8859-1] Tue Aug 
2 13:38:58 2011
@@ -95,6 +95,7 @@
                                  ParseThemeIniFileProc callback, LPVOID lpData);
 
 extern void UXTHEME_InitSystem(HINSTANCE hInst);
+extern void UXTHEME_LoadTheme(void);
 
 /* No alpha blending */
 #define ALPHABLEND_NONE             0