wx_ref and custom wx_object's
- by Iogann
Hi!
I am developing MDI application with help of wxErlang. I have a parent frame, implemented as wx_object:
-module(main_frame).
-export([new/0, init/1, handle_call/3, handle_event/2, terminate/2]).
-behaviour(wx_object).
....
And I have a child frame, implemented as wx_object too:
module(child_frame).
-export([new/2, init/1, handle_call/3, handle_event/2, terminate/2]).
-export([save/1]).
-behaviour(wx_object).
% some public API method
save(Frame) ->
wx_object:call(Frame, save).
....
I want to call save/1 for an active child frame from the parent frame. There is my code:
ActiveChild = wxMDIParentFrame:getActiveChild(Frame),
case wx:is_null(ActiveChild) of
false -
child_frame:save(ActiveChild);
_ -
ignore
end
This code fails because ActiveChild is #wx_ref{} with state=[], but wx_object:call/2 needs #wx_ref{} where state is set to the pid of the process which we call. What is the right method to do this? I thought only to store a list of all created child frames with its pids in the parent frame and search the pid in this list, but this is ugly.
