Events in conatiner generate a XContainerEvent, if you want to catch these
events you must geerate a XContainerHandler. Possible event-id are:
CON_BEGINEDIT the user start to edit a field
CON_COLLAPSTREE in tree-view the tree or a part of it is collapsed
CON_CONTEXTMENU a context-menu is requested
CON_DRAGOVER one or more objects fly over the container
CON_DROP one or more objects are dropped
CON_EMPHASIS the emphasis of an item has changed
CON_ENDEDIT the user stopped to edit a field
CON_ENTER ENTER was pressed
CON_EXPANDTREE in tree-view the tree or a part of it is expanded
CON_INITDRAG a drag-operation is requested
CON_PAINTBACKGOUND the background of the container must be redrawn
On drag-events a XContainerDragEvent s posted, you can typecast in XContainerHandler.
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