I am having datagrid with check box and combobox itemrenderer and i
am having add and delete row button to add and delete rows based upon
checkbox selection.Adding row and removing rows works fine.The
checkbox itemrenderer and Combobox itemrenderer are placed inside
their respective Hbox Container.In order to make focuse while tabbbing
i implemented IFocusManagerComponent and override drawFocus
method.After implementing this i am getting error this
TypeError: Error #1009: Cannot access a property or method of a null
object reference.
at mx.controls::DataGrid/updateDisplayList()[C:\autobuild
\3.2.0\frameworks\projects\framework\src\mx\controls\DataGrid.as:1434]
at mx.controls.listClasses::ListBase/validateDisplayList()[C:
\autobuild\3.2.0\frameworks\projects\framework\src\mx\controls
\listClasses\ListBase.as:3280]
at mx.managers::LayoutManager/validateDisplayList()[C:\autobuild
\3.2.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:
622]
at mx.managers::LayoutManager/doPhasedInstantiation()[C:\autobuild
\3.2.0\frameworks\projects\framework\src\mx\managers\LayoutManager.as:
695]
at Function/http://adobe.com/AS3/2006/builtin::apply()
at mx.core::UIComponent/callLaterDispatcher2()[C:\autobuild
\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8628]
at mx.core::UIComponent/callLaterDispatcher()[C:\autobuild
\3.2.0\frameworks\projects\framework\src\mx\core\UIComponent.as:8568]
at flash.utils::Timer/_timerDispatch()
at flash.utils::Timer/tick()
When i remove IFocusManagerComponent its works fine.If i give
editable flase to the datagridColums then also its works fine but the
tabbing is not working.
Can any one help me to solve this issue.
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