diff --git a/basis/ui/backend/cocoa/cocoa.factor b/basis/ui/backend/cocoa/cocoa.factor
index 94a104ee5e..5c6189fc6f 100644
--- a/basis/ui/backend/cocoa/cocoa.factor
+++ b/basis/ui/backend/cocoa/cocoa.factor
@@ -13,8 +13,7 @@ ui.gadgets.worlds ui.pixel-formats ui.pixel-formats.private
 ui.private words.symbol ;
 IN: ui.backend.cocoa
 
-TUPLE: handle ;
-TUPLE: window-handle < handle view window ;
+TUPLE: window-handle view window ;
 
 C: <window-handle> window-handle
 
@@ -144,7 +143,7 @@ M:: cocoa-ui-backend (open-window) ( world -- )
     window install-window-delegate
     view window <window-handle> world handle<<
     window f -> makeKeyAndOrderFront:
-    100 world active?<< ;
+    t world active?<< ;
 
 M: cocoa-ui-backend (close-window) ( handle -- )
     [
@@ -180,19 +179,17 @@ M: cocoa-ui-backend raise-window* ( world -- )
         NSApp 1 -> activateIgnoringOtherApps:
     ] when* ;
 
-GENERIC: (gl-context) ( handle -- context )
-M: window-handle (gl-context) view>> -> openGLContext ;
+M: window-handle select-gl-context ( handle -- )
+    view>> -> openGLContext -> makeCurrentContext ;
 
-M: handle select-gl-context ( handle -- )
-    (gl-context) -> makeCurrentContext ;
-
-M: handle flush-gl-context ( handle -- )
-    (gl-context) -> flushBuffer ;
+M: window-handle flush-gl-context ( handle -- )
+    view>> -> openGLContext -> flushBuffer ;
 
 M: cocoa-ui-backend beep ( -- )
     NSBeep ;
 
-M: cocoa-ui-backend resize-window [ handle>> window>> ] [ first2 ] bi* <CGSize> -> setContentSize: ;
+M: cocoa-ui-backend resize-window
+    [ handle>> window>> ] [ first2 ] bi* <CGSize> -> setContentSize: ;
 
 M: cocoa-ui-backend system-alert
     NSAlert -> alloc -> init -> autorelease [
diff --git a/basis/ui/backend/gtk/gtk.factor b/basis/ui/backend/gtk/gtk.factor
index 3ad7650412..d35b681af0 100644
--- a/basis/ui/backend/gtk/gtk.factor
+++ b/basis/ui/backend/gtk/gtk.factor
@@ -229,14 +229,14 @@ CONSTANT: action-key-codes
     2drop window relayout t ;
 
 : on-configure ( win event user-data -- ? )
-    drop swap window dup active?>> 100 = [
+    drop swap window dup active?>> [
         swap GdkEventConfigure memory>struct
         [ event-loc >>window-loc ] [ event-dim >>dim ] bi
         relayout-1
     ] [ 2drop ] if f ;
 
 : on-map ( win event user-data -- ? )
-    2drop window 100 >>active? drop t ;
+    2drop window t >>active? drop t ;
 
 : on-delete ( win event user-data -- ? )
     2drop window ungraft t ;
diff --git a/basis/ui/backend/windows/windows.factor b/basis/ui/backend/windows/windows.factor
index ffee457b19..9bf7af30ed 100755
--- a/basis/ui/backend/windows/windows.factor
+++ b/basis/ui/backend/windows/windows.factor
@@ -271,7 +271,7 @@ CONSTANT: window-control>ex-style
 : handle-wm-paint ( hWnd uMsg wParam lParam -- )
     ! wParam and lParam are unused
     ! only paint if width/height both > 0
-    3drop window 100 >>active? relayout-1 yield ;
+    3drop window t >>active? relayout-1 yield ;
 
 : handle-wm-size ( hWnd uMsg wParam lParam -- )
     2nip
@@ -411,9 +411,9 @@ CONSTANT: exclude-keys-wm-char
 
 : handle-wm-syscommand ( hWnd uMsg wParam lParam -- n )
     {
-        { [ over SC_MINIMIZE = ] [ 0 set-window-active ] }
-        { [ over SC_RESTORE = ] [ 100 set-window-active ] }
-        { [ over SC_MAXIMIZE = ] [ 100 set-window-active ] }
+        { [ over SC_MINIMIZE = ] [ f set-window-active ] }
+        { [ over SC_RESTORE = ] [ t set-window-active ] }
+        { [ over SC_MAXIMIZE = ] [ t set-window-active ] }
         { [ dup alpha? ] [ 4drop 0 ] }
         { [ t ] [ DefWindowProc ] }
     } cond ;
diff --git a/basis/ui/backend/x11/x11.factor b/basis/ui/backend/x11/x11.factor
index ef22ab9cfc..1535616102 100644
--- a/basis/ui/backend/x11/x11.factor
+++ b/basis/ui/backend/x11/x11.factor
@@ -57,7 +57,7 @@ M: world expose-event nip relayout ;
 
 M: world configure-event
     swap [ event-loc >>window-loc ] [ event-dim >>dim ] bi
-    100 >>active?
+    t >>active?
     ! In case dimensions didn't change
     relayout-1 ;
 
diff --git a/basis/ui/gadgets/worlds/worlds.factor b/basis/ui/gadgets/worlds/worlds.factor
index 5004ede420..6eab0951ff 100644
--- a/basis/ui/gadgets/worlds/worlds.factor
+++ b/basis/ui/gadgets/worlds/worlds.factor
@@ -118,7 +118,7 @@ M: world request-focus-on ( child gadget -- )
 : new-world ( class -- world )
     vertical swap new-track
         t >>root?
-        0 >>active?
+        f >>active?
         { 0 0 } >>window-loc
         f >>grab-input?
         V{ } clone >>window-resources
@@ -177,7 +177,7 @@ M: world resize-world drop ;
 M: world dim<<
     [ call-next-method ]
     [
-        dup active?>> 100 = [
+        dup active?>> [
             dup handle>>
             [ [ set-gl-context ] [ resize-world ] bi ]
             [ drop ] if
@@ -197,7 +197,7 @@ M: world draw-world*
 : draw-world? ( world -- ? )
     ! We don't draw deactivated worlds, or those with 0 size.
     ! On Windows, the latter case results in GL errors.
-    { [ active?>> 100 = ] [ handle>> ] [ dim>> [ 0 > ] all? ] } 1&& ;
+    { [ active?>> ] [ handle>> ] [ dim>> [ 0 > ] all? ] } 1&& ;
 
 TUPLE: world-error error world ;
 
@@ -217,7 +217,7 @@ ui-error-hook [ [ rethrow ] ] initialize
                 dup [ draw-world* ] with-gl-context
                 flush-layout-cache-hook get call( -- )
             ] [
-                swap 0 >>active? <world-error> ui-error
+                swap f >>active? <world-error> ui-error
             ] recover
         ] with-variable
     ] [ drop ] if ;