Patch is probably here :
http://gnuplot.cvs.sourceforge.net/viewvc/gnuplot/gnuplot/src/qtterminal/QtGnuplotScene.cpp?r1=1.4.2.15&r2=1.4.2.16&pathrev=branch-4-6-stable
Patch is probably here :
http:// gnuplot. cvs.sourceforge .net/viewvc/ gnuplot/ gnuplot/ src/qtterminal/ QtGnuplotScene. cpp?r1= 1.4.2.15& r2=1.4. 2.16&pathrev= branch- 4-6-stable