diff options
| -rw-r--r-- | button.go | 2 | ||||
| -rw-r--r-- | main.go | 2 | ||||
| -rw-r--r-- | sysdata.go | 9 |
3 files changed, 10 insertions, 3 deletions
@@ -21,7 +21,7 @@ func NewButton(text string) (b *Button) { return &Button{ sysData: mksysdata(c_button), initText: text, - Clicked: make(chan struct{}), + Clicked: Event(), } } @@ -7,7 +7,7 @@ import ( func main() { w := NewWindow("Main Window", 320, 240) - w.Closing = make(chan struct{}) + w.Closing = Event() b := NewButton("Click Me") b2 := NewButton("Or Me") s2 := NewStack(Horizontal, b, b2) @@ -5,6 +5,13 @@ import ( "runtime" ) +const eventbufsiz = 100 // suggested by skelterjohn + +// Event returns a new channel suitable for listening for events. +func Event() chan struct{} { + return make(chan struct{}, eventbufsiz) +} + // The sysData type contains all system data. It provides the system-specific underlying implementation. It is guaranteed to have the following by embedding: type cSysData struct { ctype int @@ -56,7 +63,7 @@ func (c *cSysData) delete(int) error { } // signal sends the event signal. This raise is done asynchronously to avoid deadlocking the UI task. -// Thanks skelterjohn for this techinque: if we can't queue any more events, drop them; TODO this would be best if the channel is buffered +// Thanks skelterjohn for this techinque: if we can't queue any more events, drop them func (s *cSysData) signal() { if s.event != nil { go func() { |