Tries to change the number of rows in the layout of Workspace on the Screen this is watching.
Since no more than one application should set this property of a Screen at a time, setting the layout is not guaranteed to work.
If this has not been added to a widget hierarchy, the call will fail because this can't know the screen on which to modify the layout.
this |
a Pager. |
n_rows |
the number of rows to use for the layout of Workspace on the Screen this is watching. |
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