Hi,
looking at your code snippet it seems as if you're not invoking the constructor
function of the DataGridColumn class:
var DataGridColumn = new mx.controls.gridclasses.DataGridColumn;
try this instead:
var dataGridColumn = new mx.controls.gridclasses.DataGridColumn();
To assign a labelFunction to the newly created instance use the Delegate class
dataGridColumn.labelFunction = mx.utils.Delegate.create(this, myLabelFunc)
The function myLabelFunc will then be used as the labelFunction, i.e.
function myLabelFunc(item:Obejct):String {
return Howdy!;
}
Dirk.
-Original Message-
From: joao_m_fernandes [mailto:[EMAIL PROTECTED]
Sent: Monday, April 11, 2005 3:51 PM
To: flexcoders@yahoogroups.com
Subject: [flexcoders] Re: Dynamic DataGridColumns LabelFunction
Well what I want is to be able to assign labelFunction dynamicly.
Depending on a selection I build an array of columns wich some have
labelFunctions to format de data.At the end I replace current columns
by the new array.
If I define a fixed column in a dg whe labelFunction set I can watch
the object trought debugger and get this sctructure
dg.__columns[someindex].__labelFunction{object}
__proto__
constructor
func
prototype
target
When I try to simulate the same behavior with AS
!
var colunas:array = new Array();
var DataGridColumn = new mx.controls.gridclasses.DataGridColumn;
DataGridColumn.columnName = data_fim;
DataGridColumn.__header = Até;
DataGridColumn.labelFunction= {func:eurodate,target:this};
DataGridColumn.textAlign = center;
colunas.push(DataGridColumn);
// eurodate beeing the function I want to be used and colunas the new
array to be used by the dg.
dg.columns = colunas;
!
I get the following object
__proto__
constructor
func
target
no prototype is defined for this object. Is this the approach to build
with actionScript a dgcolumn?
Regards,
João Fernandes
--- In flexcoders@yahoogroups.com, Andrew Spaulding
[EMAIL PROTECTED] wrote:
mmm i would have assumed that the simple dot notation of
mycolumn.labelFunction = myFunction; should have called the
set method
on the DataGridColumn.
maybe do it this way??
mycolumn.labelFunction = Function()
{
//do the do here
}
i'm not sure .. just guessing!
Andrew
--- In flexcoders@yahoogroups.com, joao_m_fernandes
[EMAIL PROTECTED] wrote:
Hi there,
I'm populating a DataGrid and from user selection,
columns are added
and removed. Everything works fine excepting defining a
labelFunction
to a column.
I'm using this code to define a new column and the
function to be used
eurodate.
var DataGridColumn = new mx.controls.gridclasses.DataGridColumn;
DataGridColumn.columnName = data_fim;
DataGridColumn.__header = Até;
--- DataGridColumn.__labelFunction = eurodate();
DataGridColumn.textAlign = center;
colunas.push(DataGridColumn);
I tried:
DataGridColumn.labelFunction = eurodate();
DataGridColumn.labelFunction = eurodate;
DataGridColumn.__labelFunction = eurodate();
DataGridColumn.__labelFunction = eurodate;
none worked.
Any Clue?
Thanks,
João Fernandes
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