How to export to an external file - please help!

[godatguitar]

HI All

I need to send some vaules, (one is called 'mark') to an external file. I.e The value of 'mark' = 16, i need 16 to be in another blank file, possibly a txt file or something. Basically, each of my programs will add another integer/binary value to this file, and another program will read in these values, and add them together and display a 'total mark'.

Could someone please give me an example of how to do this, as I have no idea and cant find out how to do this anywhere.

Many thanks in advance

PAUL

 

[godatguitar]

Hi Again


I actually can write to the file now, but it overwrites the file each time, ie i will have some contents in the file, and the next time I run it it will overwrite the vaule in the file. My code is:

set data $mark
set fileId [open results.txt "w"]
puts -nonewline $fileId $data
# close the file, ensuring the data is written out before you continue
close $fileId

If anyone can show me where i am going wrong I would be very grateful.

Cheers

 

[godatguitar]

OK Guys

I figured out it is the same as C, in that instead of "w" I can do "a" and it appends the file, or adds to it.

I need to know how to disable a button once it has been pressed now. Does anyone know how to do this?

Basically, they submit the test, get a result, and now i need the submit button to become disabled.

Cheers

 

[smugindividual]

when you wish to not overwrite the file use "a" in the open command instead of "w". Append instead of Write.

hope that helps

 

[smugindividual]

sorry i missed your post about the append solution. When i want a button disabled i usually just bind the click to disable it.


button .button -text "A button" -command "some_function"

bind .button <ButtonPress-1> &quot;.button configure -state disabled&quot;

 

[AviaTraining]

Many widgets, including all forms of buttons, have a -state attribute. Its default value is &quot;normal&quot;, which enables normal function. Setting the -state attribute to &quot;disabled&quot; makes a widget unresponsive to user interaction, and Tk changes the appearance of the widget to indicate the disabled state, usually by &quot;greying it out.&quot;

Here's a quick example:

button .b -text "Click me" -command {puts "Clicked"}
checkbutton .cb -text "Enable" -variable bState     -onvalue normal -offvalue disabled     -command {.b configure -state $bState}
.cb select
pack .b .cb -anchor w -padx 2 -pady 4

- Ken Jones, President, ken@avia-training.com
Avia Training and Consulting,

http://www.avia-training.com

866-TCL-HELP (866-825-4357) US Toll free
415-643-8692 Voice
415-643-8697 Fax

 

[godatguitar]

Right, heres an update:

This is the code for the button (it is in a frame) :


button $f.b -text &quot;Submit Answers&quot; -command {

set mark 0

# if the correct answer is chosen

if {$q1 == &quot;0&quot;} {incr mark}

if {$q2 == &quot;1&quot;} {incr mark}

if {$q3 == &quot;2&quot;} {incr mark}

set done 1

set result [expr {$mark * 100/3 }]
set fileId [open tmplgr &quot;a&quot;]
puts -nonewline $fileId &quot;1&quot;
puts $fileId $result
close $fileId


The variable done, is used outside of a proc with:

tkwait variable done

label .r -text &quot;Your Result is $mark out of 3&quot; -fg red
label .l -text &quot;The Correct answers Have been selected for your reference.&quot;

pack .r -padx 0 -pady 0 -anchor n
pack .l -padx 0 -pady 0 -anchor n

#END OF PROGRAM


Now, I can get the button to work fine without becoming disabled, and the program is great. However, when I try to disable the button, when the prog is run ONLY the disabling actually occurs, it does not do anything after:

tkwait variable done

I have tried Binding the button bind $f.b <....>...., I have tried writing other variables and waiting on those, I have also tried writing another proc to disable the button, but to no avail.

Could someone please point me in the right direction!! Many thanks

PAUL (godatguitar)

 

[smugindividual]

you could put the code for disabling in the -command section. That way when the button is clicked and your -command code would disable to button.

 

[godatguitar]

ok

how do i do that?


I have tried and it doesnt work

Configure is unrecognised.

Please help!