appkit toolbar in swift

To add a toolbar to your macOS app built with AppKit, you can follow these steps:

1. In Interface Builder, drag a Toolbar object from the Object Library onto your window.
2. Select the toolbar and in the Attributes inspector, you can customize the toolbar's size and behavior.
3. Add bar button items to the toolbar by dragging them from the Object Library onto the toolbar.
4. In the Attributes inspector for each bar button item, you can customize the icon, label, and action that will be triggered when the button is clicked.
5. To add functionality to the toolbar, implement the actions in your view controller and connect them to the corresponding bar button items in Interface Builder.

Here's an example of how to implement actions for two bar button items in your view controller:

main.swift
class ViewController: NSViewController {

    @IBAction func importFile(_ sender: Any) {
        // Handle import file action
    }
    
    @IBAction func exportFile(_ sender: Any) {
        // Handle export file action
    }
}
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In Interface Builder, you can connect the "importFile" and "exportFile" actions to the corresponding bar button items in the toolbar by Control-dragging from the bar button item to the view controller and selecting the appropriate action.

That's it! You now have a functional toolbar in your macOS app built with AppKit.