Finally, I found the problem. It was in this lines of code inside the draw()
method of the OpDesk class:
if ( selAreaX2 != -1 )
draw_focus(FL_FLAT_BOX, selAreaX1, selAreaY1, selAreaX2 -
selAreaX1, selAreaY2-selAreaY1);
The selAreaX2 wasn´t being initialized correctly, and the other variables were
being initialized only when certain conditiones where met, and I overlooked
initializing the mentioned variable. Since draw() is often called, and
selAreaX2 was certainly being always not -1, the app was trying to draw a focus
box of who-knows what size. And since these where not pointers, I wasn´t
getting the usual app crash, just an app freeze.
Funny how other unrelated actions (like moving some lines of code around)seemed
to fix the problem - that made it harder to find the bug. Which resulted to be
mine.
Thank you guys!
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