ShowDropdown method
Opens or closes the list box portion of a drop-down combo box.
Syntax
HRESULT retVal = object.ShowDropdown(fShow);
Parameters
fShow [in]
Type: BOOLBOOL that specifies TRUE to open the list box, or FALSE to close it.
Return value
Type: HRESULT
If this method succeeds, it returns S_OK. Otherwise, it returns an HRESULT error code.
Remarks
ShowDropdown was introduced in Windows Internet Explorer 7