# DMShellSetCreateInjection
Set the routine used to create the injection operator 
## Synopsis
```
#include "petscdmshell.h"  
PetscErrorCode DMShellSetCreateInjection(DM dm, PetscErrorCode (*inject)(DM, DM, Mat *))
```
Logically Collective on dm


## Input Parameters

- ***dm -*** the shell DM
- ***inject -*** the routine to create the injection





## See Also
 `DMShellSetCreateInterpolation()`, `DMCreateInjection()`, `DMShellGetCreateInjection()`, `DMShellSetContext()`, `DMShellGetContext()`

## Level
advanced

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


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


[Index of all DM routines](index.md)  
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