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# DMShellSetDestroyContext
set a function that destroys the context provided with `DMShellSetContext()` 
## Synopsis
```
#include "petscdmshell.h"  
PetscErrorCode DMShellSetDestroyContext(DM dm, PetscErrorCode (*destroyctx)(void *))
```
Collective


## Input Parameters

- ***dm -*** the `DM` to attach the `destroyctx()` function to
- ***destroyctx -*** the function that destroys the context





## See Also
 `DM`, `DMSHELL`, `DMShellSetContext()`, `DMShellGetContext()`

## Level
advanced

## Location
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/dm/impls/shell/dmshell.c.html#DMShellSetDestroyContext">src/dm/impls/shell/dmshell.c</A>

## Examples
<A HREF="PETSC_DOC_OUT_ROOT_PLACEHOLDER/src/ksp/ksp/tutorials/ex65.c.html">src/ksp/ksp/tutorials/ex65.c</A><BR>


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