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rio: avoid re-triggering clicks on resize/hide/unhide and send wctl when focus is lost

--- a/sys/src/cmd/rio/wind.c

+++ b/sys/src/cmd/rio/wind.c

@@ -378,6 +378,7 @@

 	w->topped = ++topped;

 	w->resized = TRUE;

 	w->winnameread = FALSE;

+	w->mc.buttons = 0;	/* avoid re-triggering clicks on resize */

 	w->mouse.counter++;

 	w->wctlready = 1;

 }

@@ -1379,6 +1380,14 @@

 			/* sync with input change from wcurrent()/wuncurrent() */

 			Channel *c = p;

 			input = recvp(c);

+

+			/* when we lost input, release mouse buttons */

+			if(w->mc.buttons){

+				w->mc.buttons = 0;

+				w->mouse.counter++;

+			}

+			w->wctlready = 1;

+

 			sendp(c, w);

 		}

 		if(w->i==nil || Dx(w->screenr)<=0)