---
title: validateVisibleColumns()
framework: appkit
role: symbol
role_heading: Instance Method
path: appkit/nsbrowser/validatevisiblecolumns()
---

# validateVisibleColumns()

Validates the browser’s visible columns.

## Declaration

```swift
func validateVisibleColumns()
```

## Discussion

Discussion This method invokes the delegate method browser(_:isColumnValid:)

## See Also

### Managing Columns

- [addColumn()](appkit/nsbrowser/addcolumn().md)
- [selectedColumn](appkit/nsbrowser/selectedcolumn.md)
- [lastColumn](appkit/nsbrowser/lastcolumn.md)
- [firstVisibleColumn](appkit/nsbrowser/firstvisiblecolumn.md)
- [numberOfVisibleColumns](appkit/nsbrowser/numberofvisiblecolumns.md)
- [lastVisibleColumn](appkit/nsbrowser/lastvisiblecolumn.md)
- [isLoaded](appkit/nsbrowser/isloaded.md)
- [loadColumnZero()](appkit/nsbrowser/loadcolumnzero().md)
- [reloadColumn(_:)](appkit/nsbrowser/reloadcolumn(_:).md)