How to put a horizontal line (separator) between rows in Gtk::TreeView

StackOverflow https://stackoverflow.com/questions/14345907

  •  15-01-2022
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Question

I'm writing a program using gtkmm-2.4 GUI package in Linux. How can I put horizontal lines as separators between rows of a TreeView?

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Solution

You are looking for set_grid_lines:

someTreeView.set_grid_lines(Gtk::TREE_VIEW_GRID_LINES_HORIZONTAL);

The actual appearance of the lines is controlled by the current Gtk Theme.

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