lol i tried that but i did =+ 1 so it was a typo and didnt work lol
well any way i really want it to be a input box and not a label but text
doesnt work with the input boxes...i think.
require 'tk'
number = 1
hello = TkRoot.new do
title "Hello World"
# the min size of window
minsize(400,400)
end
lbl = TkEntry.new() { justify 'center'
text "#{number}";
pack('padx'=>5, 'pady'=>5, 'side' => 'top') }
TkButton.new() {
text "Add One"
command proc { lbl.configure('text'=>"#{number += 1}") }
pack('side'=>'right', 'padx'=>10, 'pady'=>10)
}
Tk.mainloop
so how would you do this? Ive tried to google a good guide but they are
only like a couple examples and maybe a page. Other then help with this
problem (which im going to continue to work on while this is posted) i
want to know if anyone has a good guide that has examples but also
explains them. Or maybe a website like http://www.ruby-doc.org/docs/ProgrammingRuby/ for tk so i can see all of
the commands like label and button.
class Example
def initialize @number = 1
root = Tk.root
root.title('Ruby/Tk Example') @lbl = TkLabel.new(root) {
borderwidth 1
relief :solid
width 10
pack(:pady => 10)
} @lbl.text = @number.to_s @btn = TkButton.new(root) {
text "Add One"
pack(:pady => 10)
} @btn.command = lambda { action }
# Set initial window geometry; i.e., size and placement.
win_w, win_h, win_y = 200, 85, 50
win_x = (root.winfo_screenwidth - win_w) / 2
root.geometry("#{win_w}x#{win_h}+#{win_x}+#{win_y}")
# Set resize permissions.
root.resizable(false, false)
# Make Cmnd+Q work as expected on OS X.
if RUBY_PLATFORM =~ /darwin/
root.bind('Command-q') { root.destroy }
end
Tk.mainloop
end
def action @number += 1 @lbl.text = @number.to_s
end
end
Example.new
</code>
Ive tried to google a good guide but they are
only like a couple examples and maybe a page. Other then help with this
problem (which im going to continue to work on while this is posted) i
want to know if anyone has a good guide that has examples but also
explains them. Or maybe a website like Programming Ruby: The Pragmatic Programmer's Guide for tk so i can see all of
the commands like label and button.
Thanks! this is really helpful it allows me to see how to do boarders
and this is probably more of what i would use instead of input boxes but
even though this is something that is very helpful i would also like to
see how to do this with inputboxes. Like is there a way to have a number
preset in the box and then when you press the button it adds one to it
much like this just with an inputbox instead of a boarder.
This is something else i tried but of course it didnt work
require 'tk'
hello = TkRoot.new do
title "Hello World"
# the min size of window
minsize(400,400)
end
It didn't work mainly because you are confused about how Ruby scopes variables. My example defines a new class for good reason -- to make sure the variables I use are visible where and when I need them.
<code>
require 'tk'
class Example
def initialize @number = TkVariable.new(1)
root = Tk.root
root.title('Ruby/Tk Example')
# @entry = TkLabel.new(root) {
# width 10
# borderwidth 1
# relief :solid
# pack(:pady => 10)
# } @entry = TkEntry.new(root) {
width 10
justify :center
pack(:pady => 10)
} @entry.textvariable = @number @btn = TkButton.new(root) {
text "Add One"
pack(:pady => 10)
} @btn.command = lambda { action }
# Set initial window geometry; i.e., size and placement.
win_w, win_h, win_y = 200, 85, 50
win_x = (root.winfo_screenwidth - win_w) / 2
root.geometry("#{win_w}x#{win_h}+#{win_x}+#{win_y}")
# Set resize permissions.
root.resizable(false, false)
# Make Cmnd+Q work as expected on OS X.
if RUBY_PLATFORM =~ /darwin/
root.bind('Command-q') { root.destroy }
end
Tk.mainloop
end
def action @number.numeric += 1
end
end
Example.new
</code>
The commented-out code will also work if you uncomment it and comment out the @entry = TkEntry { ... } code instead. This is because TkEntry is a direct subclass of TkLabel and inherits its textvariable property from TkLabel. The difference is that you can edit the numbers when a TkEntry object is used. For instance, if you edit a displayed number to 42, when you click on the button, the next number will be 43.
Regards, Morton
···
On Feb 22, 2008, at 10:07 PM, Isaac Toothyxdip wrote:
This is something else i tried but of course it didnt work
require 'tk'
hello = TkRoot.new do
title "Hello World"
# the min size of window
minsize(400,400)
end
Thank you this is exactly what i was wanting! Im going to try to find a
good class tutorial so i can understand them a little more just the only
thing i didnt understand to well was this
Morton Goldberg wrote:
# Make Cmnd+Q work as expected on OS X.
if RUBY_PLATFORM =~ /darwin/
root.bind('Command-q') { root.destroy }
i under stand what it does and i under stand the root.bind(....).....
but i just dont under stand the "=~ /darwin/" What is it telling the
computer to look for?.
Also if you can do this does this mean that i could make a program that
lets say if you press F10 then it can turn a continues loop on and off?
Like if pressed it sends z over and over again and if you press it again
it stops.
Thank you this is exactly what i was wanting! Im going to try to find a
good class tutorial so i can understand them a little more just the only
thing i didnt understand to well was this
Morton Goldberg wrote:
# Make Cmnd+Q work as expected on OS X.
if RUBY_PLATFORM =~ /darwin/
root.bind('Command-q') { root.destroy }
i under stand what it does and i under stand the root.bind(....).....
but i just dont under stand the "=~ /darwin/" What is it telling the
computer to look for?.
'=~' is the regular expression match operator. It's a way of asking: does the pre-defined Ruby constant RUBY_PLATFORM contain the string 'darwin'. When Ruby runs under OS X, the answer will be yes -- that is, 'RUBY_PLATFORM =~ /darwin/' evaluates to non-nil on a Macintosh running OS X, but not on one running Linux or Windows (and, yes, a Macintosh can run Linux or Windows).
Also if you can do this does this mean that i could make a program that
lets say if you press F10 then it can turn a continues loop on and off?
Like if pressed it sends z over and over again and if you press it again
it stops.
Yes, you could do that. You can use the bind method to bind an action to any keyboard event. Further bind can be used to bind actions to other operating system events as well.
Regards, Morton
···
On Feb 26, 2008, at 12:54 PM, Isaac Toothyxdip wrote:
Just one question. But it really asks: what is Ruby about? It would seem you need to learn the basics; in particular, the basics of OOP (Object Oriented Programming). Perhaps some other participants in this mailing list will feel up to posting an explanation of what OOP is, but it's too big a topic for me. All I can do is recommend you obtain copies of these two books:
David Flanagan, Yukihiro Matsumoto: The Ruby Programming Language (ISBN-10: 0596516177 ISBN-13: 978-0596516178)
Dave Thomas et al., Programming Ruby: The Pragmatic Programmers' Guide (ISBN-10: 0974514055
ISBN-13: 978-0974514055)
Regards, Morton
···
On Mar 1, 2008, at 4:26 PM, Isaac Toothyxdip wrote:
But i just have one question.
What is the reason to use classes? like what does a class change does it
just make it neater? or does it define variables in a different way?