CODEWITHSUNDEEP
user-interfacetcltk-toolkit
freeworld
freeworld

Reputation: 79

Dropdown menu button in tcl/tk

Is there any way to create a drop down toolbar button(Like Paste button in MS Word) using Tcl/TK?.I have googled a lot but nothing found.Any help will be appreciable.

Upvotes: 0

Views: 1544

Answers (1)

Donal Fellows
Donal Fellows

Reputation: 137567

You probably want to use a menubutton and a menu, probably with radiobutton entries if I've understood which UI element in Word you're talking about. (Or maybe a ttk::menubutton and menu.) Now, if you're doing something very simple with it then you can make do with just tk_optionMenu as a way to combine those commands, but that's just a simple procedure; if you're doing something complicated with the menu, it's probably easier to write it yourself or at least to get the code for tk_optionMenu and to customise it how you want it to work.

The source code for tk_optionMenu isn't very long; I'll paste the non-comment parts of it here:

proc ::tk_optionMenu {w varName firstValue args} {
    upvar #0 $varName var

    if {![info exists var]} {
        set var $firstValue
    }
    menubutton $w -textvariable $varName -indicatoron 1 -menu $w.menu \
            -relief raised -highlightthickness 1 -anchor c \
            -direction flush
    menu $w.menu -tearoff 0
    $w.menu add radiobutton -label $firstValue -variable $varName
    foreach i $args {
        $w.menu add radiobutton -label $i -variable $varName
    }
    return $w.menu
}

You probably want to pay attention to how the menubutton and menu are connected to each other. ttk::menubutton is mostly a drop-in replacement for menubutton, except for different look-and-feel configuration options.

Upvotes: 1

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