Questions regarding how to customize existing controls are asked more often than probably any other category of Avalonia question. A guide should be created to address this knowledge gap of a reliable process. Most topic pages will have several links to other pages that cover the concept.
Rough list of topics:
Locating Relevant Properties using DevTools
Visual Tree
Active/Inactive Style Selectors
TemplatedParent
Locating Originating ControlTheme
Simple/Fluent
Third-party
Emphasize General Importance of Reading ControlThemes
Types of Possible Visual Modifications Without Copying ControlTheme
Style selectors
Overriding resources
Setter precedence (prerequisite, link to doc)
Types of Impossible Visual Modifications Without Copying ControlTheme
Customize local set value
Changing XAML tree structure
Local Inclusion of Copied ControlTheme (when modification is impossible)
Create an alternate look for a control that already has a desired default look
Modifying or Adding Behavior to Existing Controls
Attached behaviors/properties
Tunnel events
Example with TextBox key input filtering
Inherit -> custom control (StyleKeyOverride)
Limitations
Docs Location: How-To Guides
Looking for feedback/general interest as I will probably author this.
Questions regarding how to customize existing controls are asked more often than probably any other category of Avalonia question. A guide should be created to address this knowledge gap of a reliable process. Most topic pages will have several links to other pages that cover the concept.
Rough list of topics:
TextBoxkey input filteringDocs Location: How-To Guides
Looking for feedback/general interest as I will probably author this.