diff options
Diffstat (limited to 'progress.txt')
| -rw-r--r-- | progress.txt | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/progress.txt b/progress.txt index 8611c9b..7b3909f 100644 --- a/progress.txt +++ b/progress.txt @@ -34,6 +34,7 @@ FLTK.Widgets.Clocks FLTK.Widgets.Clocks.Updated FLTK.Widgets.Clocks.Updated.Round FLTK.Widgets.Groups.Scrolls +FLTK.Widgets.Groups.Tabbed FLTK.Widgets.Groups.Text_Displays.Text_Editors FLTK.Widgets.Groups.Windows.Double FLTK.Widgets.Groups.Windows.Single @@ -104,7 +105,6 @@ FL_Pack FL_Spinner FL_Table FL_Table_Row -FL_Tabs FL_Tile FL_Tree FL_Wizard @@ -125,3 +125,19 @@ FL_Sys_Menu_Bar FL_Positioner FL_Timer + + + +A note on callbacks and overriding: + +As part of its normal operation, FLTK calls a Widget's Draw and Handle methods from its +main loop to deal with draw and input events. Since it's another part of the program +that is invoking them, even if it's a part the programmer has no direct control over, +this binding is set up so that if you override Draw or Handle, the behaviour will change. + +On the other hand, something like the Push method in tabbed groups is usually invoked +from within that same tabbed group widget's Handle method. Therefore, keeping consistency +with Ada semantics, overriding the Push method will NOT change the behaviour of the +corresponding Handle method. You must also override Handle. + + |