From: Jun Young Kim <jykim@...>
Date: 2008-12-17T10:59:08+09:00
Subject: Ruby Tk (make available of a single pointer(marker) of TkText)

Hi,

Now, I am trying to make simple Diff-viewer by using Ruby Tk.

But, I have a problems to show a pointer(cursor) on the TkText panel.

Simply, you can understand my case in the following code pattern.

        @leftText = TkText.new(leftFrame) do
             padx        0
             borderwidth 0
             background  'white'
             state       'normal'
         end
         @rightText = TkText.new(rightFrame) do
             padx        0
             borderwidth 0
             background  'white'
             state       'normal'
         end

Create both of TkText instances to show a diff of sources.

After inserting a source into TkText panel, I set

@leftText['state']   = :disabled
@rightText['state'] = :disabled

I know,  this two lines make uncursored panel.

But, without this lines, panel is modifiable. Users can delete and  
insert their own texts.

Is any idea for this ?