OpenEuphoria

2. Re: EuGTK - change column label?

• Posted by irv Sep 20, 2010
• 1208 views

That's 'cause a TreeView doesn't have a 'title' property, and if it did, that's not what you are wanting to change anyway :)

To change a column's title - just get the column you want to change from the treeview like so:

atom column = get(tv,"column",1) -- column 1 is actually the second column, thanks to C! 
set(column,"title","Foo!") 

Hmm... ok, just for fun, instead of changing the title to some plain old text, let's put an animated gif in there instead:

constant img = create(GtkImage,"tiphat.gif") 
atom column = get(data,"column",3) 
set(column,"widget",img) 
show(img) 

Works fine. Might even be useful. Put a blinking down-arrow in the column your user is supposed to be selecting from perhaps?

Exciting Screenshot

4. Re: EuGTK - change column label?

• Posted by irv Sep 20, 2010
• 1154 views

atom column = get(tv,"column",1) -- column 1 is actually the second column, thanks to C! 
set(column,"title","Foo!") 

global object 
 lvFoods = CreateLV(8000) <== 1 
 
global constant 
  lstFoods = List:View(lvFoods,{"food","N/100g","N/req cal"}) 
 
atom col 
 
  col = get(lstFoods,"column",0) -- starts with 0 <== 2 
  set(col,"title",sprintf("%d  foods",{length(dl_Foods)}))  

set(col,"title",sprintf("%d  foods",{length(dl_Foods)}))

1 - that creates separate text renderers, one for each column in your view. Probably want 3 or 4 there, not 8000!

2 - The "classname is 0" generally (always?) means that the control in question hasn't been registered with Eugtk. To make sure these columns get registered, add the marked lines to ListView.e:

Note: a call to setRow or setCol will also register the column - that's why my demo worked without the added lines.

export function View(sequence lv, object cols) 
atom tv = create(GtkTreeView) 
atom col -- add 
for i = 1 to length(cols) do  
	addColumn(tv,lv[RENDERERS][i],cols[i],i-1) 
	col = get(tv,"column",i-1) -- add 
	register_object(col,GtkTreeViewColumn) -- add 
end for  
return tv 
end function