How can I set “maxChars” of the TextInput in an editable ComboBox?

You could extend ComboBox and override the default maxChars value for the internal TextInput . If you need to set it dynamically, you could add a public method to set the property on the extended class.

My alternative is to use the protected textInput directly. This approach allows the "maxChars" property to be set in the GUI builder or code, just as you would for a normal TextField. Note that zero is a valid value for maxChars and indicates unlimited characters.

The override of .childrenCreated() is needed to avoid attempting to set maxChars before the TextInput object exists.

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