error "This script should be run from the \"widget\" demo."
}
# loadDir --
# This procedure reloads the directory listbox from the directory
# named in the demo's entry.
#
# Arguments:
# w - Name of the toplevel window of the demo.
proc loadDir w {
global dirName
$w.f.list delete 0 end
foreach i [lsort [glob -directory $dirName *]] {
$w.f.list insert end [file tail $i]
}
}
# selectAndLoadDir --
# This procedure pops up a dialog to ask for a directory to load into
# the listobx and (if the user presses OK) reloads the directory
# listbox from the directory named in the demo's entry.
#
# Arguments:
# w - Name of the toplevel window of the demo.
proc selectAndLoadDir w {
global dirName
set dir [tk_chooseDirectory -initialdir $dirName -parent $w -mustexist 1]
if {[string length $dir] != 0} {
set dirName $dir
loadDir $w
}
}
# loadImage --
# Given the name of the toplevel window of the demo and the mouse
# position, extracts the directory entry under the mouse and loads
# that file into a photo image for display.
#
# Arguments:
# w - Name of the toplevel window of the demo.
# x, y- Mouse position within the listbox.
proc loadImage {w x y} {
global dirName
set file [file join $dirName [$w.f.list get @$x,$y]]
image2a configure -file $file
}
set w .image2
catch {destroy $w}
toplevel $w
wm title $w "Image Demonstration #2"
wm iconname $w "Image2"
positionWindow $w
label $w.msg -font $font -wraplength 4i -justify left -text "This demonstration allows you to view images using a Tk \"photo\" image. First type a directory name in the listbox, then type Return to load the directory into the listbox. Then double-click on a file name in the listbox to see that image."
