---
title: componentFlagsMask
framework: Core Services
role: symbol
role_heading: Instance Property
platforms: [Mac Catalyst 17.0+, macOS 10.0+]
path: coreservices/componentdescription/1516402-componentflagsmask
---

# componentFlagsMask

A 32-bit field that indicates which flags in the `componentFlags` field are relevant to a particular component search operation. 

## Declaration

```occ
UInt32 componentFlagsMask;
```

## Discussion

If you are developing an application that uses components, your application should set each bit that corresponds to a flag in the [componentFlags](1516652-componentflags.md) field that is to be considered as a search criterion by the [FindNextComponent](../1516552-findnextcomponent.md) or [CountComponents](../1516515-countcomponents.md) function to `1`. The Component Manager considers only these flags during the search. You specify the desired flag value (either `0` or `1`) in the [componentFlags](1516652-componentflags.md) field. 

For example, to look for a component with a specific control flag that is set to `0`, set the appropriate bit in the [componentFlags](1516652-componentflags.md) field to `0` and the same bit in the `componentFlagsMask` field to `1`. To look for a component with a specific control flag that is set to `1`, set the bit in the [componentFlags](1516652-componentflags.md) field to `1` and the same bit in the `componentFlagsMask` field to `1`. To ignore a flag, set the bit in the `componentFlagsMask` field to `0`.

If you are developing a component, your component must set the `componentFlagsMask` field in its component description structure to `0`.