mac 2,9 "Cannot nest wxDCs on the same window"

[Riccardo Cohen]

Hi
I have a program that works on wxmac2,7 , but with 2,9 it displays the 
following assertion : "Cannot nest wxDCs on the same window"

this happens when I do

   wxClientDC      *dc=new wxClientDC(diag);
   dc->DrawRectangle(rec);
   delete(dc);

inside a timer_wake event.
I do not understand exactly what it means. Is there something changed 
from 2,7 to 2,9 on dc creation ?

Thanks for any info.

-- 
Très cordialement,

Riccardo Cohen
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