From: Mark Harmstone <hellas@burntcomma.com>
Subject: [PATCH 3/5] user32: Call uxtheme theming hook.
Message-Id: <55109FB3.6040504@burntcomma.com>
Date: Mon, 23 Mar 2015 23:20:19 +0000

---
 dlls/user32/driver.c       | 39 ++++++++++++++++++++++++++++++++++++++-
 dlls/user32/user_private.h | 13 +++++++++++++
 2 files changed, 51 insertions(+), 1 deletion(-)

diff --git a/dlls/user32/driver.c b/dlls/user32/driver.c
index e0bc38c..01a7a50 100644
--- a/dlls/user32/driver.c
+++ b/dlls/user32/driver.c
@@ -38,6 +38,8 @@ static USER_DRIVER null_driver, lazy_load_driver;
 const USER_DRIVER *USER_Driver = &lazy_load_driver;
 static char driver_load_error[80];
 
+THEMINGHOOKS theming_hooks;
+
 static HMODULE load_desktop_driver( HWND hwnd )
 {
     static const WCHAR display_device_guid_propW[] = {
@@ -85,6 +87,37 @@ static HMODULE load_desktop_driver( HWND hwnd )
     return ret;
 }
 
+static void theming_hooks_init(void)
+{
+    static WCHAR theming_dll[] = {'u','x','t','h','e','m','e','.','d','l','l',0};
+    static char theming_func[] = "WINE_ThemeInitApiHook";
+
+    memset(&theming_hooks, 0, sizeof(theming_hooks));
+
+    theming_hooks.module = LoadLibraryW(theming_dll);
+    if (!theming_hooks.module) {
+        WARN("Could not load module %s\n", debugstr_w(theming_dll));
+        return;
+    }
+
+    theming_hooks.func = (WINETHEMINGHOOKPROC)GetProcAddress(theming_hooks.module, theming_func);
+    if (!theming_hooks.func) {
+        WARN("Could not find function %s\n", theming_func);
+        return;
+    }
+
+    theming_hooks.func(FALSE, &theming_hooks.hooks);
+}
+
+static void theming_hooks_free(void)
+{
+    if (theming_hooks.func)
+        theming_hooks.func(TRUE, &theming_hooks.hooks);
+
+    if (theming_hooks.module)
+        FreeLibrary(theming_hooks.module);
+}
+
 /* load the graphics driver */
 static const USER_DRIVER *load_driver(void)
 {
@@ -169,6 +202,8 @@ static const USER_DRIVER *load_driver(void)
     __wine_set_display_driver( graphics_driver );
     register_builtin_classes();
 
+    theming_hooks_init();
+
     return driver;
 }
 
@@ -178,8 +213,10 @@ void USER_unload_driver(void)
     USER_DRIVER *prev;
     /* make sure we don't try to call the driver after it has been detached */
     prev = InterlockedExchangePointer( (void **)&USER_Driver, &null_driver );
-    if (prev != &lazy_load_driver && prev != &null_driver)
+    if (prev != &lazy_load_driver && prev != &null_driver) {
+        theming_hooks_free();
         HeapFree( GetProcessHeap(), 0, prev );
+    }
 }
 
 
diff --git a/dlls/user32/user_private.h b/dlls/user32/user_private.h
index adf3f7d..ee29410 100644
--- a/dlls/user32/user_private.h
+++ b/dlls/user32/user_private.h
@@ -313,6 +313,19 @@ typedef struct
 
 extern BOOL get_icon_size( HICON handle, SIZE *size ) DECLSPEC_HIDDEN;
 
+/* theming hooks */
+
+typedef BOOL(CALLBACK *WINETHEMINGHOOKPROC)(BOOL, WINEUSERAPIHOOK*);
+
+typedef struct
+{
+    HMODULE module;
+    WINETHEMINGHOOKPROC func;
+    WINEUSERAPIHOOK hooks;
+} THEMINGHOOKS;
+
+extern THEMINGHOOKS theming_hooks;
+
 /* Mingw's assert() imports MessageBoxA and gets confused by user32 exporting it */
 #ifdef __MINGW32__
 #undef assert