---
title: Conversion Masks
framework: Core Services
role: containerSymbol
role_heading: Enumeration
platforms: [Mac Catalyst 17.0+, macOS 10.0+]
path: coreservices/1433493-conversion_masks
---

# Conversion Masks

Set or text for conversion flags.

## Declaration

```occ
enum : unsigned int {
    ...
};
```

## Topics

### Constants

- [kUnicodeUseFallbacksMask](coreservices/1433493-conversion_masks/kunicodeusefallbacksmask.md)
- [kUnicodeKeepInfoMask](coreservices/1433493-conversion_masks/kunicodekeepinfomask.md)
- [kUnicodeDirectionalityMask](coreservices/1433493-conversion_masks/kunicodedirectionalitymask.md)
- [kUnicodeVerticalFormMask](coreservices/1433493-conversion_masks/kunicodeverticalformmask.md)
- [kUnicodeLooseMappingsMask](coreservices/1433493-conversion_masks/kunicodeloosemappingsmask.md)
- [kUnicodeStringUnterminatedMask](coreservices/1433493-conversion_masks/kunicodestringunterminatedmask.md)
- [kUnicodeTextRunMask](coreservices/1433493-conversion_masks/kunicodetextrunmask.md)
- [kUnicodeKeepSameEncodingMask](coreservices/1433493-conversion_masks/kunicodekeepsameencodingmask.md)
- [kUnicodeForceASCIIRangeMask](coreservices/1433493-conversion_masks/kunicodeforceasciirangemask.md)
- [kUnicodeNoHalfwidthCharsMask](coreservices/1433493-conversion_masks/kunicodenohalfwidthcharsmask.md)
- [kUnicodeTextRunHeuristicsMask](coreservices/1433493-conversion_masks/kunicodetextrunheuristicsmask.md)
- [kUnicodeMapLineFeedToReturnMask](coreservices/1433493-conversion_masks/kunicodemaplinefeedtoreturnmask.md)
- [kUnicodeUseExternalEncodingFormMask](coreservices/1433493-conversion_masks/kunicodeuseexternalencodingformmask.md)

## See Also

### Feature Selectors

- [Conversion Flags](coreservices/1433583-conversion_flags.md)
- [Directionality Flags](coreservices/1433491-directionality_flags.md)
- [Directionality Masks](coreservices/1433620-directionality_masks.md)
- [Unicode Converter Flags](coreservices/1400304-unicode_converter_flags.md)
- [Unicode Converter Masks](coreservices/1400367-unicode_converter_masks.md)
- [Unicode Fallback Sequencing Flag](coreservices/1433597-unicode_fallback_sequencing_flag.md)
- [Unicode Fallback Sequencing Masks](coreservices/1433622-unicode_fallback_sequencing_mask.md)
- [Unicode Matching Flags](coreservices/1433572-unicode_matching_flags.md)
- [Unicode Matching Masks](coreservices/1433554-unicode_matching_masks.md)
- [Fallback Handler Selectors](coreservices/1433507-fallback_handler_selectors.md)