:orphan:
# PetscObjectQuery
Gets a PETSc object associated with a given object that was composed with `PetscObjectCompose()`
## Synopsis
```
#include "petscsys.h"
PetscErrorCode PetscObjectQuery(PetscObject obj, const char name[], PetscObject *ptr)
```
Not Collective
## Input Parameters
- ***obj -*** the PETSc object
Thus must be cast with a (`PetscObject`), for example,
`PetscObjectCompose`((`PetscObject`)mat,...);
- ***name -*** name associated with child object
- ***ptr -*** the other PETSc object associated with the PETSc object, this must be
cast with (`PetscObject`*)
## Note
The reference count of neither object is increased in this call
## See Also
`PetscObjectCompose()`, `PetscObjectComposeFunction()`, `PetscObjectQueryFunction()`, `PetscContainer`
`PetscContainerGetPointer()`, `PetscObject`
## Level
advanced
## Location
src/sys/objects/inherit.c
## Examples
src/ksp/ksp/tutorials/ex73.c
src/snes/tutorials/ex48.c
src/snes/tutorials/ex7.c
src/ts/tutorials/ex29.c
src/ts/tutorials/ex77.c
---
[Edit on GitLab](https://gitlab.com/petsc/petsc/-/edit/release/src/sys/objects/inherit.c)
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