- puts $f "set geometry(canv1) [expr [winfo width $canv]-2]"
- puts $f "set geometry(canv2) [expr [winfo width $canv2]-2]"
- puts $f "set geometry(canv3) [expr [winfo width $canv3]-2]"
- puts $f "set geometry(canvh) [expr [winfo height $canv]-2]"
+ puts $f "set geometry(canv1) [expr {[winfo width $canv]-2}]"
+ puts $f "set geometry(canv2) [expr {[winfo width $canv2]-2}]"
+ puts $f "set geometry(canv3) [expr {[winfo width $canv3]-2}]"
+ puts $f "set geometry(canvh) [expr {[winfo height $canv]-2}]"