🚀 go-pugleaf

Mu-Yu Yang (yang@dukas.cs.unc.edu) wrote:
: I am trying to get access to an editor's WindowRep right after the editor is
: opened by Unidraw but have no luck. It fails because the canvas of the
: newly-opened editor is still nil. Take Punidraw for example for the sake of
: simplicity:
: 
:    Creator creator;
:    Unidraw* unidraw = new Unidraw(
:       new Catalog(
:          "punidraw", &creator
:       ), argc, argv, options, properties
:    );
: 
:    Punidraw* punidraw = new Punidraw;
:    unidraw->Open(punidraw);
:    punidraw->GetCanvas()->window()->rep();
: 
: This will blow up since punidraw->GetCanvas() returns nil. Does Anyone know
: how to get the WindowRep or make the canvas non-nil right after the editor
: is opened? Any hint will be very much appreciated.

You could wait until the window is mapped:

unidraw->Open(punidraw);
Event e;
while (punidraw->GetCanvas() != nil) {
  Session::instance()->read(e);
  e.handle();
}
punidraw->GetCanvas()->window()->rep();

--
+-----------------+-------------------------------+-------------------------+
| Bill Poitras    | Molecular Simulations Inc.    | Tel (408)522-9229       |
| (bill)          | Sunnyvale, CA USA             |                         | 
|                 | FAX (408)732-0831             | bill@msi.com            |
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