connectTestCollapseRow
fun connectTestCollapseRow(connectFlags: <Error class: unknown class> = ConnectFlags(0u), handler: (iter: TreeIter, path: TreePath) -> Boolean): <Error class: unknown class>
The given row is about to be collapsed (hide its children nodes). Use this signal if you need to control the collapsibility of individual rows.
Parameters
connectFlags
A combination of ConnectFlags
handler
the Callback to connect. Params: iter the tree iter of the row to collapse; path a tree path that points to the row. Returns false to allow collapsing, true to reject