TVM_GETCOUNT message
Retrieves a count of the items in a tree-view control. You can send this message explicitly or by using the TreeView_GetCount macro.
Parameters
-
wParam
- Must be zero.
-
lParam
- Must be zero.
Return value
Returns the count of items.
Remarks
The node count returned by TreeView_GetCount is limited to integer values. If you add a node beyond 32767 the macro returns a negative value. After adding 65536 nodes the count returns to zero. When this occurs, the tree-view control appears empty with no scrollbars.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client |
Windows Vista [desktop apps only] |
| Minimum supported server |
Windows Server 2003 [desktop apps only] |
| Header |
|