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https://issues.apache.org/jira/browse/FLEX-32599?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Justin Mclean resolved FLEX-32599.
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Resolution: Fixed
Fix Version/s: Apache Flex 4.10.0
Checked in develop branch.
> TypeError: Error #1009: Cannot access a property or method of a null object
> reference.at
> mx.controls::AdvancedDataGrid/findHeaderRenderer()mx.controls::AdvancedDataGrid/mouseEventToItemRenderer()
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
>
> Key: FLEX-32599
> URL: https://issues.apache.org/jira/browse/FLEX-32599
> Project: Apache Flex
> Issue Type: Bug
> Components: Advanced Data Grid
> Affects Versions: Adobe Flex SDK Previous
> Environment: Affected OS(s): Windows
> Affected OS(s):
> Language Found: English
> Reporter: Adobe JIRA
> Assignee: Justin Mclean
> Priority: Minor
> Fix For: Apache Flex 4.10.0
>
>
> Steps to reproduce:
> 1. Columns created
> 2. dataProvider is initializing
> 3. moving to header of the grid then error occured.
>
> Actual Results:
> runtime error occured
> TypeError: Error #1009: Cannot access a property or method of a null object
> reference.
> at mx.controls::AdvancedDataGrid/findHeaderRenderer()
> at mx.controls::AdvancedDataGrid/mouseEventToItemRenderer()
> at mx.controls.listClasses::AdvancedListBase/mouseMoveHandler()
>
> Expected Results:
> no error should be occur.
>
> Workaround (if any):
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