Thanks Dirk,
It worked perfectly. Now I understand how important delegate is important and how to use it. Jo�o Fernandes --- In [email protected], "Dirk Eismann" <[EMAIL PROTECTED]> wrote: > 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: [email protected] > > 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 = "At�"; > > 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, > > > > Jo�o Fernandes > > --- In [email protected], "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 [email protected], "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 = "At�"; > > > > --->>> 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, > > > > Jo�o Fernandes > > > > > > > > > > > > > > Yahoo! Groups Links > > > > > > > > > > > > > > > > Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/flexcoders/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
