/// <summary>Removes a signal-triggered callback from an object.
/// This function removes a callback, previously attached to the emission of a signal, from the object obj. The parameters emission, source and func must match exactly those passed to a previous call to <see cref="Efl.Layout.Signal.AddSignalCallback"/>.
///
/// See <see cref="Efl.Layout.Signal.AddSignalCallback"/>.
/// 1.21</summary>
/// <param name="emission">The signal's "emission" string
/// 1.21</param>
/// <param name="source">The signal's "source" string
/// 1.21</param>
/// <param name="func">The callback function to be executed when the signal is emitted.
/// 1.21</param>
/// <returns><c>true</c> in case of success, <c>false</c> in case of error.
/// 1.21</returns>
public bool DelSignalCallback(System.String emission, System.String source, EflLayoutSignalCb func)
{
GCHandle func_handle = GCHandle.Alloc(func);
var _ret_var = Efl.Layout.SignalNativeInherit.efl_layout_signal_callback_del_ptr.Value.Delegate(this.NativeHandle, emission, source, GCHandle.ToIntPtr(func_handle), EflLayoutSignalCbWrapper.Cb, Efl.Eo.Globals.free_gchandle);
Eina.Error.RaiseIfUnhandledException();
return(_ret_var);
}
internal static void Cb(IntPtr cb_data, [MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(Efl.Eo.MarshalTest <Efl.Layout.SignalConcrete, Efl.Eo.NonOwnTag>))] Efl.Layout.Signal kw_object, [MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(Efl.Eo.StringKeepOwnershipMarshaler))] System.String emission, [MarshalAs(UnmanagedType.CustomMarshaler, MarshalTypeRef = typeof(Efl.Eo.StringKeepOwnershipMarshaler))] System.String source)
{
GCHandle handle = GCHandle.FromIntPtr(cb_data);
EflLayoutSignalCb cb = (EflLayoutSignalCb)handle.Target;
try {
cb(kw_object, emission, source);
} catch (Exception e) {
Eina.Log.Warning($"Callback error: {e.ToString()}");
Eina.Error.Set(Eina.Error.UNHANDLED_EXCEPTION);
}
}
