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Diffstat (limited to 'implementation.md')
| -rw-r--r-- | implementation.md | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/implementation.md b/implementation.md index 895fa19..9fa1341 100644 --- a/implementation.md +++ b/implementation.md @@ -49,6 +49,8 @@ As the GTK+ main loop system does not quite run in a sane way (it allows recursi GTK+ layout managers are not used since the UI library's layout managers are coded in a portable way. (`GtkFixed` is used instead.) This isn't ideal, but it works for now. +All event handlers take the `sysData` as their user data parameter; this means all the event-handling code is stored in static functions in callbacks_unix.go. (Early versions of the package generated signal handlers for each control on the fly, but this needed to be changed to accommodoate Area, which not only needs the `sysData` but also needs to connect to a subwidget of a subwidget (specifically the subwidget of the `GtkViewport` of a `GtkScrolledWindow`); the current setup also avoids creating closures for each and every Window and Button created, and also means we can stop having to shove those callbacks in an ever-growing slice to prevent them from being garbage collected.) + The only major snag with the GTK+ implementation is the implementation of `Listbox`; see `listbox_unix.go` for details. ## Mac OS X |