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Inserts a group into a list-view control.
Parameters
-
wParam
- Index where the group is to be added. If this is -1, the group is added at the end of the list.
-
lParam
- Pointer to a LVGROUP structure that contains the group to add.
Return value
Returns the index of the item that the group was added to, or -1 if the operation failed.
Remarks
To turn on group mode, call LVM_ENABLEGROUPVIEW or ListView_EnableGroupView.
A group cannot be inserted into an empty list-view control.
Be sure to set the iGroupId in the item(s) the group was added to. Otherwise after LVM_ENABLEGROUPVIEW message processing with TRUE the listview control will not show any items.
Note
To use this message, you must provide a manifest specifying Comclt32 version 6.0. For more information on manifests, see Enabling Visual Styles.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2003 [desktop apps only] |
| Header |
|