:orphan:
# PetscViewerAndFormatCreate
Creates a `PetscViewerAndFormat` struct. 
## Synopsis
```
#include "petscviewer.h" 
PetscErrorCode PetscViewerAndFormatCreate(PetscViewer viewer, PetscViewerFormat format, PetscViewerAndFormat **vf)
```
Collective


## Input Parameters

- ***viewer -*** the viewer
- ***format -*** the format



## Output Parameter

- ***vf -*** viewer and format object





## Notes
This increases the reference count of the viewer.

Use `PetscViewerAndFormatDestroy()` to free the struct

This is used as the context variable for many of the `TS`, `SNES`, and `KSP` monitor functions

This construct exists because it allows one to keep track of the use of a `PetscViewerFormat` without requiring the
format in the viewer to be permanently changed.


## See Also
 [](sec_viewers), `PetscViewer`, `PetscViewerAndFormat`, `PetscViewerFormat`, `PetscViewerSocketOpen()`, `PetscViewerASCIIOpen()`, `PetscViewerCreate()`,
`PetscViewerDrawOpen()`, `PetscViewerAndFormatDestroy()`

## Level
developer

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/sys/classes/viewer/interface/view.c.html#PetscViewerAndFormatCreate">src/sys/classes/viewer/interface/view.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex2f.F90.html">src/ksp/ksp/tutorials/ex2f.F90</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/snes/tutorials/ex30.c.html">src/snes/tutorials/ex30.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/tutorials/ex12.c.html">src/ts/tutorials/ex12.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/tutorials/ex52.c.html">src/ts/tutorials/ex52.c</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ts/tutorials/ex7.c.html">src/ts/tutorials/ex7.c</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/classes/viewer/interface/view.c)


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