meta is a modifier key too

direct/src/showbase/ShowBase.py

@@ -1040,6 +1040,7 @@ class ShowBase(DirectObject.DirectObject):
             mb.addButton(KeyboardButton.shift())
             mb.addButton(KeyboardButton.control())
             mb.addButton(KeyboardButton.alt())
+            mb.addButton(KeyboardButton.meta())
             mw.node().setModifierButtons(mb)
             bt = mw.attachNewNode(ButtonThrower(name))
             if (i != 0):
@@ -1048,6 +1049,7 @@ class ShowBase(DirectObject.DirectObject):
             mods.addButton(KeyboardButton.shift())
             mods.addButton(KeyboardButton.control())
             mods.addButton(KeyboardButton.alt())
+            mods.addButton(KeyboardButton.meta())
             bt.node().setModifierButtons(mods)
             self.buttonThrowers.append(bt)
             if (win.hasPointer(i)):
@@ -1129,6 +1131,10 @@ class ShowBase(DirectObject.DirectObject):
         return self.mouseWatcherNode.getModifierButtons().isDown(
             KeyboardButton.control())
 
+    def getMeta(self):
+        return self.mouseWatcherNode.getModifierButtons().isDown(
+            KeyboardButton.meta())
+
     def addAngularIntegrator(self):
         if not self.physicsMgrAngular:
             self.physicsMgrAngular = 1

direct/src/showbase/Sources.pp

@@ -3,13 +3,13 @@
   #define LOCAL_LIBS \
     directbase
   #define OTHER_LIBS \
+    pgraph:c gsgbase:c gobj:c mathutil:c pstatclient:c \
+    lerp:c downloader:c pandabase:c pnmimage:c prc:c \
+    pipeline:c cull:c $[if $[HAVE_NET],net:c] \
     display:c linmath:c event:c putil:c panda:m \
     express:c pandaexpress:m \
     interrogatedb:c dconfig:c dtoolconfig:m \
-    dtoolutil:c dtoolbase:c dtool:m \
-    pgraph:c gsgbase:c gobj:c mathutil:c pstatclient:c \
-    lerp:c downloader:c pandabase:c pnmimage:c prc:c \
-    pipeline:c cull:c $[if $[HAVE_NET],net:c]
+    dtoolutil:c dtoolbase:c dtool:m
 
   #define SOURCES \
     showBase.cxx showBase.h

panda/src/framework/windowFramework.cxx

@@ -399,6 +399,7 @@ enable_keyboard() {
     mods.add_button(KeyboardButton::shift());
     mods.add_button(KeyboardButton::control());
     mods.add_button(KeyboardButton::alt());
+    mods.add_button(KeyboardButton::meta());
     bt->set_modifier_buttons(mods);
     mouse.attach_new_node(bt);
   }