# PCShellGetContext
Returns the user-provided context associated with a shell `PC` 
## Synopsis
```
#include "petscpc.h" 
PetscErrorCode PCShellGetContext(PC pc, void *ctx)
```
Not Collective


## Input Parameter

- ***pc -*** of type `PCSHELL` created with `PCSetType`(pc,shell)



## Output Parameter

- ***ctx -*** the user provided context





## Note
This routine is intended for use within various shell routines


## Fortran Note
To use this from Fortran you must write a Fortran interface definition for this
function that tells Fortran the Fortran derived data type that you are passing in as the ctx argument.


## See Also
 `PCSHELL`, `PCShellSetContext()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/pc/impls/shell/shellpc.c.html#PCShellGetContext">src/ksp/pc/impls/shell/shellpc.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex15.c.html">src/ksp/ksp/tutorials/ex15.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex60.c.html">src/ksp/ksp/tutorials/ex60.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/pde_constrained/tutorials/hyperbolic.c.html">src/tao/pde_constrained/tutorials/hyperbolic.c.html</A><BR>
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/tao/pde_constrained/tutorials/parabolic.c.html">src/tao/pde_constrained/tutorials/parabolic.c.html</A><BR>


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[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/ksp/pc/impls/shell/shellpc.c)


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