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ListView_SetItemState macro (commctrl.h)

  • Article

Changes the state of an item in a list-view control. You can use this macro or send the LVM_SETITEMSTATE message explicitly.

Syntax

void ListView_SetItemState(
   HWND hwndLV,
   int  i,
   UINT data,
   UINT mask
);

Parameters

hwndLV

Type: HWND

A handle to the list-view control.

i

Type: int

The index of the list-view item. If this parameter is -1, then the state change is applied to all items.

data

Type: UINT

New state bits for the item. The mask parameter indicates the valid bits of the data parameter. The macro ignores bits in the data parameter if the corresponding bit is not set in the mask parameter. The low-order byte contains a set of bit flags that indicate the item's state. This byte can be a combination of the following values:

Value Meaning
LVIS_CUT
 The item is marked for a cut-and-paste operation.
LVIS_DROPHILITED
 The item is highlighted as a drag-and-drop target.
LVIS_FOCUSED
 The item has the focus, so it is surrounded by a standard focus rectangle. Although more than one item may be selected, only one item can have the focus.
LVIS_SELECTED
 The item is selected. The appearance of a selected item depends on whether it has the focus and also on the system colors used for selection. Items will only show as selected if the list-view control has focus or the LVS_SHOWSELALWAYS style is used.

mask

Type: UINT

Bits of the data parameter that you want to set or clear. You can use ListView_SetItemState both to set and to clear bits. To set an item's overlay image index, set the LVIS_OVERLAYMASK bits. To set an item's state image index, set the LVIS_STATEIMAGEMASK bits.

Return value

None

Remarks

An item's state value includes a set of bit flags that indicate the item's state. The state value can also include image list indexes that indicate the item's state image and overlay image.

The mask parameter specifies the state bits you want to modify, and the data parameter specifies the new value for those bits. To set a bit in the item's internal state, set it in both the mask and data parameters. To clear a bit in the item's internal state, set it in the mask parameter and clear it in the data parameter. To leave a bit unchanged in the item's internal state, clear it in the mask parameter.

Bits 8 through 11 of the data parameter specify the one-based index of an overlay image in the control's image lists. Both the full-sized icon image list and the small icon image list can have overlay images. The overlay image is superimposed over the item's icon image. If these bits are zero, the item has no overlay image. To isolate these bits, use the LVIS_OVERLAYMASK mask. To specify an overlay index, use the INDEXTOOVERLAYMASK macro.

Bits 12 through 15 of the data parameter specify the one-based index of an image in the control's state image list. The state image is displayed next to an item's icon to indicate an application-defined state. If these bits are zero, the item has no state image. To isolate these bits, use the LVIS_STATEIMAGEMASK mask. To specify a state image index, use the INDEXTOSTATEIMAGEMASK macro.

Requirements

Requirement Value
Minimum supported client Windows Vista [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Target Platform Windows
Header commctrl.h

See also

ListView_GetItemState