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TVM_GETVISIBLECOUNT message

  • Artikkel

Obtains the number of items that can be fully visible in the client window of a tree-view control. You can send this message explicitly or by using the TreeView_GetVisibleCount macro.

Parameters

wParam

Must be zero.

lParam

Must be zero.

Return value

Returns the number of items that can be fully visible in the client window of the tree-view control.

Remarks

The number of items that can be fully visible may be greater than the number of items in the control. The control calculates this value by dividing the height of the client window by the height of an item.

Note that the return value is the number of items that can be fully visible. If you can see all of 20 items and part of one more item, the return value is 20.

Requirements

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