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package require Tk
package require img::gif
puts "Using [expr $tcl_platform(pointerSize) *8]-bit Tcl [info patchlevel], Tk $::tk_patchLevel, img::gif [package require img::gif]"
set imgFile [file join ".." "sourceimgs" "smiley.gif"]
proc CheckIndex { fileName fmt ind } {
set retVal [catch {image create photo -file $fileName -format "$fmt -index $ind"} phImg]
if { $retVal == 0 } {
image delete $phImg
return true
}
return false
}
proc GetNumPages { fileName fmt } {
if { [CheckIndex $fileName $fmt 1] } {
set ind 5
while { [CheckIndex $fileName $fmt $ind] } {
incr ind 5
}
incr ind -1
while { ! [CheckIndex $fileName $fmt $ind] } {
incr ind -1
}
return [expr { $ind + 1 }]
}
return 1
}
# Determine the number of pages of the animated GIF.
set numPages [GetNumPages $imgFile GIF]
# Extract all pages of the GIF file and display in a label.
for { set n 0 } { $n < $numPages } { incr n } {
set img($n) [image create photo -file $imgFile -format [list GIF -index $n]]
label .img_$n -image $img($n) -compound top -relief ridge -text "GIF -index $n"
pack .img_$n -side left -padx 10
}
bind . <Escape> exit
if { [lindex $argv 0] eq "auto" } {
update
after 500
exit
}
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