// SendEvent sends an event to a widget.
func sendEvent(dest sparta.Widget, comm sparta.CommandEvent) {
dwin := dest.Window().(*window)
var id w32.HWND
if comm.Source != nil {
id = comm.Source.Window().(*window).id
}
w32.PostMessage(dwin.id, w32.WM_USER, uintptr(id), uintptr(comm.Value))
}
func (this *Window) onUiThread(f func()) {
this.uiTasks <- f
w32.PostMessage(this.hwnd, WDEM_UI_THREAD, uintptr(0), uintptr(0))
}