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# PETSC_DRAW_NULL

PETSc graphics device that ignores all draw commands

## Note

A `PETSC_DRAW_NULL` is useful in places where `PetscDraw` routines are called but no graphics window, for example, is available.

## See Also

`PetscDraw`, `PetscDrawOpenNull()`, `PETSC_DRAW_X`, `PetscDrawOpenNull()`, `PetscDrawIsNull()`

## Level

beginner

## Location

src/sys/classes/draw/impls/null/drawnull.c

Index of all Draw routines
Table of Contents for all manual pages
Index of all manual pages