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Old 06-24-2005, 08:15 PM   #1
Kenji Miyamoto
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Tk: Storing Output of Program

How would one store the output of a program to a variable in a Tk shell script? Also, how would one embed the output into a label?
 
Old 06-24-2005, 09:48 PM   #2
macemoneta
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I assume you're actually using TCL/TK (TK runs with multiple languages). To set a variable to the output of a program:

set somevariable [exec program]

To set a label to the value of the variable, use the -textvariable option. For example:

Code:
label $base.lab23  -anchor nw \
       -background #d3d3d3 -borderwidth 0  \
       -font {Fixed -14 bold} -height 20 \
       -justify left -padx 4  -relief raised \
       -textvariable somevariable -width 260 \
       -foreground #000000
 
Old 06-25-2005, 12:38 AM   #3
Kenji Miyamoto
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How would I position an object, such as a button, next to another one, rather than below?
 
Old 06-25-2005, 12:54 AM   #4
macemoneta
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You can use the place command, with explicit x-y coordinates. For example:

Code:
    place $base.but44 \
        -x 90 -y 585 -anchor nw -bordermode ignore
    place $base.but45 \
        -x 190 -y 585 -anchor nw -bordermode ignore
    place $base.but46 \
        -x 290 -y 585 -anchor nw -bordermode ignore
This will place three buttons horizontally next to each other (the "-y" values are the same, but the "-x" values position them along the line).
 
Old 06-25-2005, 01:57 AM   #5
Kenji Miyamoto
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The problem here is that the window always changes size, and the buttons don't push the bottom of the window down, so they often don't appear:
Code:
#!/usr/bin/wish
# Set the fortune into place
set fortune [exec fortune]
frame .mainFrame -width 300 -height 300
message .mainFrame.fort -text $fortune # Fortune text
button .close -command "destroy ." -text "Close" # Exit button
button .next -text "Next" -command "newFortune" # Next fortune button
pack .mainFrame
pack .mainFrame.fort
place .next -x 90 -y 100 -anchor nw -bordermode ignore
place .close -x 190 -y 100 -anchor nw -bordermode ignore
# In case another fortune is wanted
proc newFortune {} {
	set fortune [exec fortune]
	destroy .mainFrame.fort
	message .mainFrame.fort -text $fortune
	pack .mainFrame.fort
}
Is there a way to place them horizontally beside each other, but still alow them to slide downward for longer messages?
Last edited by Kenji Miyamoto; 06-25-2005 at 09:24 AM.
 
  


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