Items and Subitems
Each item in a list view control consists of an icon, a label, a current
state, and an application-defined value. One or more subitems can also be associated
with each item. A
subitem is a string that, in report view, can be displayed in a column to the right of
an item's icon and label. All items in a list view control have the same
number of subitems. By using list view messages, you can add, modify, retrieve
information about, and delete items. You can also find items with specific
attributes.
The
LV_ITEM structure defines a list view item or subitem. The
iItem member is the zero-based index of the item. The
iSubItem member is the one-based index of a subitem or zero if the structure contains
information about an item. Additional members specify the item's text, icon,
state, and item data.
Item data is an application-defined value associated with a list view item.
To add an item to a list view control, use the
LVM_INSERTITEM message, specifying the address of an
LV_ITEM structure. Before adding multiple items, you can send the control an
LVM_SETITEMCOUNT message, specifying the number of items the control will ultimately contain.
This message enables the list view control to reallocate its internal data
structures only once rather than every time you add an item. You can determine the
number of items in a list view control by using the
LVM_GETITEMCOUNT message.
To change the attributes of a list view item, use the
LVM_SETITEM message, specifying the address of an
LV_ITEM structure. The
mask member of this structure specifies the item attributes you want to change. To
change only the text of an item or subitem, use the
LVM_SETITEMTEXT message.
To retrieve information about a list view item, use the
LVM_GETITEM message, specifying the address of the
LV_ITEM structure to fill in. The
mask member of this structure specifies the item attributes to be retrieved. To
retrieve only an item or subitem's text, use the
LVM_GETITEMTEXT message.
To delete a list view item, use the
LVM_DELETEITEM message. You can delete all items in a list view control by using the
LVM_DELETEALLITEMS message.
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MegaDetailed.Net
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