I've been able to figure out on my own how to do what I need in the
largely undocumented tcltk package, but I've finally hit a wall. I can't
even think of any sufficiently specific search terms to use for this.
I'm trying to make the widgets in my tk window resize when the window is
resized by clicking and dragging on its corners or edges. Instead they
stay exactly where they are, and parts of them get cut off when the
window is made smaller and reveal large empty spaces when the windows is
made bigger. Looks terrible.
I've tried doing tkconfig(mywidget,sticky='news') and all that does is
stretch the widget out to the original window dimensions, but this
doesn't help at all when the window is resized. From reading the TclTK
documentation, it seems like the 'rowconfigure' and 'columnconfigure'
methods of the grid are supposed to solve this problem by setting the
'weight' grid option. There exists a tkgrid.rowconfigure() command and
the following invocation did not produce any errors...
tkgrid.rowconfigure(mywidget,0,weight=1)
...but it didn't make the widget dynamically resize with the parent
window either. Either I'm invoking it incorrectly, or it doesn't
actually do what I think it does. Rather than posting my lengthy and
complicated code, I'll post this example instead from
bioinf.wehi.edu.au/~wettenhall/RTclTkExamples/ (a very helpful site
without which I would never have been able to use the tcltk package at all).
require(tcltk)
tt<- tktoplevel()
xscr<- tkscrollbar(tt, repeatinterval=5,orient="horizontal",
command=function(...)tkxview(txt,...))
yscr<- tkscrollbar(tt, repeatinterval=5,
command=function(...)tkyview(txt,...))
txt<- tktext(tt,bg="white",font="courier",
xscrollcommand=function(...)tkset(xscr,...),yscrollcommand=function(...)tkset(yscr,...),
wrap="none")
tkgrid(txt,yscr)
tkgrid(xscr)
tkgrid.configure(yscr,sticky="ns")
tkgrid.configure(xscr,sticky="ew")
for (i in (1:100)) tkinsert(txt,"end",paste(i,"^ 2 =",i*i,", "))
tkconfigure(txt, state="disabled")
tkfocus(txt)
This creates a scrollable text window, and it suffers from exactly the
problem I described above. My question is: what needs to be changed in
order to make the tktext widget and its scrollbars automatically resize
with the parent window?
Thank you.
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