# 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
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/classes/draw/impls/null/drawnull.c.html#PETSC_DRAW_NULL">src/sys/classes/draw/impls/null/drawnull.c</A>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/classes/draw/impls/null/drawnull.c)


[Index of all Draw routines](index.md)  
[Table of Contents for all manual pages](/docs/manualpages/index.md)  
[Index of all manual pages](/docs/manualpages/singleindex.md)  
