MGS [2003/09/20] - Sometimes it is necessary/desirable to bind to a toplevel window. For example, I might want to withdraw a toplevel window, instead of having it iconify, when clicking the minimize button. There are several ways to do this:
1. Bind directly to the window name. e.g.
bind . <Unmap> [list wm withdraw .]
However, the binding will trigger if you decide to unmanage any of the window's child widgets, due to their default binding tags.
2. Bind to the toplevel window's class. e.g.
bind [winfo class .] <Unmap> [list wm withdraw %W]
However, this binding will fire for all windows with the same class as . .
3. Create a new binding tag for the toplevel window and then create the binding to that tag. e.g.
bindtags . [list . bind. [winfo class .] all] bind bind. <Unmap> [list wm withdraw %W]
or more generally:
set W [toplevel .mywin] bindtags $W [linsert [bindtags $W] 1 bind$W] bind bind$W <Unmap> [list wm withdraw %W]
RUJ: Hi, I would like to know ... How to bind a "Leave" command to main toplevel but it should be work on its child widgets also. I want to make popupwindow which will have some entries and labels & this window should destroyed after cursor moved away from window.
MJ - Just destroy the toplevel and all its child widgets are destroyed as well. In the <Leave> event binding make sure you only call the destroy when the toplevel is closed. Leaving a child widget will also call the binding, because the toplevel is in every child widgets bindtags list.
toplevel .l
bind .l <Leave> {tlclose %W}
proc tlclose {w} {if {$w == [winfo toplevel $w]} {destroy $w}}
See also: