Smart Code Completion is a feature that analyzes the first few characters you have typed and provides a list of possible endings. For example, if you are using a library with a bunch of functions that start with 'lcd', after typing in those letters, you will see a list of functions such as 'lcdInit()' and 'lcdWrite()' displayed for you to select from.
By default, smart code completion will not automatically pop up with suggestions. You need to press the keys Ctrl+Space twice to make the full list appear.
Once the list is showing, you can scroll through it and double-click on the item you wish to insert into your code.
Once you have inserted a new function, a tool tip will appear to prompt you for any required parameters. If there are multiple parameters, the next one to be entered will be highlighted with bold text.
How to enable or disable automatic display of smart code completion
From the main menu, select Tools ▸ Options
As of MPLAB X IDE version 1.0 and 1.1, the auto pop-up feature is not functional. We are working on the problem. Pressing Ctrl+Space twice will display the list.
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