Tree-View Item States
An item's state determines its appearance and functionality. It can be zero,
or one or more of the following values.
||The item is bold.
||The item is selected as part of a cut and paste operation.
||The item is selected as a drag and drop target.
||The item's list of child items is currently expanded; that is, the child items
are visible. This value applies only to parent items.
||The item's list of child items has been expanded at least once. The TVN_ITEMEXPANDING and TVN_ITEMEXPANDED notification messages are not sent for parent items that have specified this
value. This value applies only to parent items.
||The item's overlay image is included when the item is drawn. The index of the
overlay image must be specified in the state member of the TV_ITEM structure by using the INDEXTOOVERLAYMASK macro. The overlay image must be added to the tree view's image list by using
the ImageList_SetOverlayImage function. This value should not be combined with any other value.
||The item is selected. The appearance of a selected item depends on whether it
has the focus and on whether the system colors are used for selection.
||The item's state image is included when the item is drawn. The index of the
state image must be specified in the state member of the TV_ITEM structure by using theINDEXTOSTATEIMAGEMASK macro. This value should not be combined with any other value.
||Same as TVIS_STATEIMAGEMASK.
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