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Asked: 2026-06-01T21:52:02+00:00

I am creating my code’s documentation using Doxygen. The problem is, there are quite

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I am creating my code’s documentation using Doxygen.
The problem is, there are quite large number of classes and Doxygen generates a class index that is vertically as well as horizontally scroll able.
I mean, there are a large number of columns in that HTML table.
How do I change the number of columns to say 1 or 2 which will make the class index page only vertically scrollable?

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  1. Editorial Team

    See the alphabetical index configuration file options. Specifically, see the COLS_IN_ALPHA_INDEX option. From the doxygen manual:

    If the alphabetical index is enabled … then the COLS_IN_ALPHA_INDEX tag can be used to specify the number of columns in which this list will be split (can be a number in the range [1..20])

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