Item States - Win32 Programmer's Reference

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Item States

An item's state is a value that specifies the item's availablility, indicates user actions, or otherwise reflects the item's status. A list view control changes some state bits, such as when the user selects an item. An application might change other state bits to disable or hide the item or to specify an overlay image or state image. For more information about overlay images and state images, see List View Image Lists.

An item's state is specified by the state member of the LV_ITEM structure. When you specify or change an item's state, the stateMask member specifies which state bits you want to change. You can change an item's state by using the LVM_SETITEMSTATE message. You can specify an item's state when you create it or when you change its attributes by using the LMV_SETITEM message. To determine an item's current state, use the LVM_GETITEMSTATE or LVM_GETITEM message.

To set an item's overlay image, the stateMask member of the LV_ITEM structure must include the LVIS_OVERLAYMASK value, and the state member must include the one-based index of the overlay image shifted left 8 bits by using the INDEXTOOVERLAYMASK macro. The index can be zero to specify no overlay image.

To set an item's state image, the stateMask member of the LV_ITEM structure must include the LVIS_STATEIMAGEMASK value, and the state member must include the one-based index of the state image shifted left 12 bits by using the INDEXTOSTATEIMAGEMASK macro. The index can be zero to specify no state image.

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