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TVM_GETITEMRECT message

  • Artikkeli

Retrieves the bounding rectangle for a tree-view item and indicates whether the item is visible. You can send this message explicitly or by using the TreeView_GetItemRect macro.

Parameters

wParam

Value specifying the portion of the item for which to retrieve the bounding rectangle. If this parameter is TRUE, the bounding rectangle includes only the text of the item. Otherwise, it includes the entire line that the item occupies in the tree-view control.

lParam

Pointer to a RECT structure that, when sending the message, contains the handle of the item to retrieve the rectangle for. See the example below for more information on how to place the item handle in this parameter. After returning from the message, this parameter contains the bounding rectangle. The coordinates are relative to the upper-left corner of the tree-view control.

Return value

If the item is visible and the bounding rectangle was successfully retrieved, the return value is TRUE. Otherwise, the message returns FALSE and does not retrieve the bounding rectangle.

Remarks

When sending this message, the lParam parameter contains the handle of the item that the rectangle is being retrieved for. The handle is placed in lParam as shown in the following example:

RECT rc;

*(HTREEITEM*)&rc = hTreeItem;

SendMessage(hwndTreeView, TVM_GETITEMRECT, FALSE, (LPARAM)&rc);

Requirements

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