{The S-lang C Library Reference}: SLsmg_set_screen_start

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## 25. SLsmg_set_screen_start

Synopsis

  Set the origin of the virtual display

Usage

  `void SLsmg_set_screen_start (int *r, int *c)`

Description

  `SLsmg_set_screen_start` sets the origin of the virtual display to the row `*r` and the column `*c`. If either `r` or `c` is `NULL`, then the corresponding value will be set to `0`. Otherwise, the location specified by the pointers will be updated to reflect the old origin.

  See `slang/demo/pager.c` for how this function may be used to scroll horizontally.

See Also

  `SLsmg_init_smg`

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