Add a submenu item in Languages menu to open UDL folder

Fix #5404, close #7540

PowerEditor/src/Notepad_plus.rc

@@ -775,6 +775,7 @@ BEGIN
         MENUITEM "YAML",                    IDM_LANG_YAML
         MENUITEM SEPARATOR
         MENUITEM "Define your language...", IDM_LANG_USER_DLG
+        MENUITEM "Open UDL folder...",      IDM_LANG_OPENUDLDIR
         MENUITEM "User-Defined",            IDM_LANG_USER
     END
 
@@ -918,6 +919,7 @@ BEGIN
     MENUITEM "YAML",                      IDM_LANG_YAML
     MENUITEM SEPARATOR
     MENUITEM "Define your language...",   IDM_LANG_USER_DLG
+    MENUITEM "Open UDL folder...",        IDM_LANG_OPENUDLDIR
     MENUITEM "User-Defined",              IDM_LANG_USER
     END
 

PowerEditor/src/NppCommands.cpp

@@ -3049,6 +3049,13 @@ void Notepad_plus::command(int id)
 		}
         break;
 		
+		case IDM_LANG_OPENUDLDIR: {
+			generic_string _userPath = NppParameters::getInstance().getUserPath();
+			PathAppend(_userPath, TEXT("userDefineLangs"));
+			::ShellExecute(_pPublicInterface->getHSelf(), TEXT("open"), _userPath.c_str(), NULL, NULL, SW_SHOW);
+			break;
+		}
+
         case IDC_PREV_DOC :
         case IDC_NEXT_DOC :
         {

PowerEditor/src/Parameters.cpp

@@ -369,6 +369,7 @@ static const WinMenuKeyDefinition winKeyDefs[] =
 
 	{ VK_NULL,    IDM_LANG_USER_DLG,                            false, false, false, nullptr },
 	{ VK_NULL,    IDM_LANG_USER,                                false, false, false, nullptr },
+	{ VK_NULL,    IDM_LANG_OPENUDLDIR,                          false, false, false, nullptr },
 
 	{ VK_NULL,    IDM_SETTING_PREFERENCE,                       false, false, false, nullptr },
 	{ VK_NULL,    IDM_LANGSTYLE_CONFIG_DLG,                     false, false, false, nullptr },

PowerEditor/src/menuCmdID.h

@@ -522,6 +522,7 @@
     #define    IDM_LANG_USER               (IDM_LANG + 180)     //46180: Used for translation
     #define    IDM_LANG_USER_LIMIT         (IDM_LANG + 210)     //46210: Ajust with IDM_LANG_USER
     #define    IDM_LANG_USER_DLG           (IDM_LANG + 250)     //46250: Used for translation
+    #define    IDM_LANG_OPENUDLDIR         (IDM_LANG + 300)