[adavis] I am developing an application which requires a third mouse button; However, the two button mouse seems by far to be the most common variety. I've put together something which emulates a third mouse button by pressing both mouse buttons together. I've searched but haven't found an existing solution (though I guess there must be one) so I'm posting my version. It seems to work OK but I presume there is a neater solution... I've decided to call the system '''button13''' which generates the following virtual events:- * '''<>''' - Button one pressed. * '''<>''' - Button three pressed. * '''<>''' - Buttons one and three pressed together. Buttons one and three must be pressed within 200ms of each other (This value can be set as a parameter). proc button13 {widget {ms 200}} { bind $widget "button13proc1 $widget 1 $ms" bind $widget "button13proc1 $widget 3 $ms" } proc button13proc1 {widget button ms} { global button13 if {[info exists button13($widget)] && ! [string equal $button13($widget) $button]} { event generate $widget <> catch "unset button13($widget)" return } set button13($widget) $button after $ms "button13proc2 $widget $button" } proc button13proc2 {widget button} { global button13 if {! [info exists button13($widget)]} { return } if {[info exists button13($widget)] && ! [string equal $button13($widget) $button]} { event generate $widget <> } else { event generate $widget <> } catch "unset button13($widget)" } #===================# # Example of usage. # #===================# label .lab1 -text "Click on this label" button13 .lab1 bind .lab1 <> "puts Button-1" bind .lab1 <> "puts Button-3" bind .lab1 <> "puts Button-13" pack .lab1