TVM_GETVISIBLECOUNT message
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 |
|