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Retrieves a count of the buttons currently in the toolbar.
Parameters
- 
wParam 
- Must be zero.
- 
lParam 
- Must be zero.
Return value
Returns the count of the buttons.
Requirements
| Requirement | Value | 
|---|---|
| Minimum supported client | Windows Vista [desktop apps only] | 
| Minimum supported server | Windows Server 2003 [desktop apps only] | 
| Header | 
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