dinput: Add a helper function to open configuration registry keys.

dlls/dinput/device.c

@@ -218,6 +218,41 @@ void _dump_DIDATAFORMAT(const DIDATAFORMAT *df) {
 }
 
 /******************************************************************************
+ * Get the default and the app-specific config keys.
+ */
+BOOL get_app_key(HKEY *defkey, HKEY *appkey)
+{
+    char buffer[MAX_PATH+16];
+    DWORD len;
+
+    *appkey = 0;
+
+    /* @@ Wine registry key: HKCU\Software\Wine\DirectInput */
+    if (RegOpenKeyA(HKEY_CURRENT_USER, "Software\\Wine\\DirectInput", defkey))
+        *defkey = 0;
+
+    len = GetModuleFileNameA(0, buffer, MAX_PATH);
+    if (len && len < MAX_PATH)
+    {
+        HKEY tmpkey;
+
+        /* @@ Wine registry key: HKCU\Software\Wine\AppDefaults\app.exe\DirectInput */
+        if (!RegOpenKeyA(HKEY_CURRENT_USER, "Software\\Wine\\AppDefaults", &tmpkey))
+        {
+            char *p, *appname = buffer;
+            if ((p = strrchr(appname, '/'))) appname = p + 1;
+            if ((p = strrchr(appname, '\\'))) appname = p + 1;
+            strcat(appname, "\\DirectInput");
+
+            if (RegOpenKeyA(tmpkey, appname, appkey)) appkey = 0;
+            RegCloseKey(tmpkey);
+        }
+    }
+
+    return *defkey || *appkey;
+}
+
+/******************************************************************************
  * Get a config key from either the app-specific or the default config
  */
 DWORD get_config_key( HKEY defkey, HKEY appkey, const char *name,

dlls/dinput/device_private.h

@@ -72,6 +72,7 @@ struct IDirectInputDevice2AImpl
     DataFormat                  data_format; /* user data format and wine to user format converter */
 };
 
+extern BOOL get_app_key(HKEY*, HKEY*);
 extern DWORD get_config_key(HKEY, HKEY, const char*, char*, DWORD);
 
 /* Routines to do DataFormat / WineFormat conversions */

dlls/dinput/joystick_linux.c

@@ -269,28 +269,11 @@ static BOOL joydev_enum_deviceW(DWORD dwDevType, DWORD dwFlags, LPDIDEVICEINSTAN
 static HRESULT setup_dinput_options(JoystickImpl * device)
 {
     char buffer[MAX_PATH+16];
-    HKEY hkey, appkey = 0;
-    DWORD len;
+    HKEY hkey, appkey;
 
     buffer[MAX_PATH]='\0';
 
-    /* @@ Wine registry key: HKCU\Software\Wine\DirectInput */
-    if (RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\DirectInput", &hkey)) hkey = 0;
-
-    len = GetModuleFileNameA( 0, buffer, MAX_PATH );
-    if (len && len < MAX_PATH) {
-        HKEY tmpkey;
-        /* @@ Wine registry key: HKCU\Software\Wine\AppDefaults\app.exe\DirectInput */
-        if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\AppDefaults", &tmpkey ))
-        {
-            char *p, *appname = buffer;
-            if ((p = strrchr( appname, '/' ))) appname = p + 1;
-            if ((p = strrchr( appname, '\\' ))) appname = p + 1;
-            strcat( appname, "\\DirectInput" );
-            if (RegOpenKeyA( tmpkey, appname, &appkey )) appkey = 0;
-            RegCloseKey( tmpkey );
-        }
-    }
+    get_app_key(&hkey, &appkey);
 
     /* get options */