Here is a simple example: http://www.cflex.net/showfiledetails.cfm?ChannelID=1&Object=File&objectI D=559
Tracy ________________________________ From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Doug Lowder Sent: Monday, March 12, 2007 1:05 PM To: [email protected] Subject: [flexcoders] Re: Checkbox in Celrenderer Problem It's not a bug. Cell renderers are created only for visible objects in a list control, not for every single item in the list. Renderers get reused for items in the list, which provides a performance gain compared to creating a renderer object for every list item. What you are seeing is a renderer that has been reused for multiple items, but hasn't been told completely how to transfer its data to and from the list item. The result is seemingly unpredictable behavior. You need to set the state of your renderer's checkbox in the setValue () method, and set the value of the dataprovider field when the user clicks on the checkbox to change its state. Assuming your dataprovider has some boolean field that corresponds to the state of your checkbox control, then in setValue() you should have something like the following, where "item" is the data object passed to the function: myCheckBox.selected = item[getDataLabel()]; In the checkbox's click handler, you should have something like the following that sets the value of a field in the dataprovider according to the checkbox state: listOwner.editField( getCellIndex().itemIndex, getDataLabel(), myCheckBox.selected); The listOwner, getCellIndex, and getDataLabel properties are values that get passed to all cell renderers. HTH, Doug --- In [email protected] <mailto:flexcoders%40yahoogroups.com> , "digital_eyezed" <[EMAIL PROTECTED]> wrote: > > Hi, > > I have a cellrenderer for a datagrid which has a simple checkbox in it. > > My problem is, when I click the checkbox, another checkbox (which is > outside the scroll area of the datagrid) is also checked and so on > every row which is equal to the rowcount of the datagrid. > > Is this a bug? > > How do I get around this problem? > > Best Regards, > > Iain (Flex 1.5) >
