Re: using Canvas

[Marcus G. Daniels]

>>>>> "XH" == xueyue  <address@hidden> writes:

XH> My guess is that in main.m, there should be a command to
XH> initialize graphical environment. But I did not where is the
XH> equivalent in Swarm (I did not examine it yet).
 
It's necessary to have something processing the Tk events.
In Swarm, this is typically done using the doTkEvents method.
Another way is to add this line at the end of your test program:

  while (1) { while (GUI_EVENT_ASYNC ()) {} } 

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