PrincipalClass.md

Principal Class

Defining a PrincipalClass allows to use a subclass of the Application class.

How to use an Application subclass ?

• Define a class that inherits from SwiftWin32.Application. Here is an example:

import SwiftWin32

public class MyApplication: Application {
    let message = "This is a message from MyApplication subclass"
}

• In Info.plist, define a PrincipalClass entry with a String value of {Module}.{CustomClassName}. For example, if the product module name is CustomPrincipalClass, then we can register MyApplication (defined above) as follows:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>PrincipalClass</key>
    <string>CustomPrincipalClass.MyApplication</string>
    <!-- other content -->
  </dict>
</plist>