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_gtkButtonSwitchCBactivate

_gtkButtonSwitchCBactivate gets the current state (on or off) of a ButtonSwitch object.
The used GTK+ version should be 3.x or above, otherwise the object will not be created and nil will be always returned.

This function should be never called ! You should call _gtkWidgetCBmouse with flag CB_MOUSE_PRESSED instead and next ask the state of the ButtonSwitch by _gtkButtonSwitchGet.
Another way is to call _gtkWidgetCB with "notify::active" as signal name (experimental).

Prototype : fun [ObjGtkButton fun [ObjGtkButton u0 S] u1 u0 I] ObjGtkButton

• ObjGtkButton : a ButtonSwitch object.


• fun [ObjGtkButton u0 S] u1 : the callback :
  • ObjGtkButton : the BittonSwitch object
  • u0 : the user parameter
  • S : the event name ("activate")


• u0 : a user parameter, at your convenience.


• I : the propagate signal (SIGNAL_PROPAGATE or NOSIGNAL_PROPAGATE)).


• Return ObjGtkButton : the same ButtonSwitch object or nil if an error occurs.

See also

Example