[et] 12/30/2023

New to Tcl/Tk 9.0 is the enhancement of both toplevel and frame to now include a background image. This also includes the ability to tile the background if the image is small. It quite nicely re-tile's as needed when the window size changes. Also demonstrated is the 9.0 new command lseq.

Here is an example program:

======
package require Tk 9.0-

proc main {args} {
    global pic1 pic2
    
    wm withdraw .

    toplevel .newtop        -backgroundimage $pic1 -tile 1
    frame    .newtop.f      -backgroundimage $pic2 -tile 1
    button   .newtop.f.b    -text "Quit!"   -command exit -bg blue -fg yellow -font {Consolas 28}
    pack     .newtop.f      -fill y         -expand 1
    pack      .newtop.f.b   -expand 1
    
    wm geom .newtop 400x200+64+64
    wm protocol .newtop WM_DELETE_WINDOW {exit}

    set count 55
    set step 5
    foreach pass [lseq 1 to 5] {
        foreach w [lseq 400 count $count  by $step] h [lseq 200 count $count by $step] {
            wm geom .newtop ${w}x$h
            after 5
            update
        }
        foreach w [lseq $w count $count  by -$step] h [lseq $h count $count by -$step] {
            wm geom .newtop ${w}x$h
            after 5
            update
        }
    }
    
}


                
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}]
        

        
set pic2 [image create photo -data {

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}]

main

======