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JamControls.TOnBeforeShellColumnChangedEvent

This procedure is called when the user changes the columns by using the header context menu.

Syntax
Pascal
TOnBeforeShellColumnChangedEvent = procedure (Sender: TJamBaseShellListView; const ColumnID: TShellColumnId; const Event: TJamShellColumnChangedEvent; var AllowChange: Boolean) of object;
Parameters 
Description 
Sender 
The sending ListView. 
ColumnID 
The TShColumnID of the column that should be changed. 
Event 
scAdded, if the user wants to add the column. scRemoved if he wants to hide it. 
AllowChange 
Specifies if the change should be allowed.