Examples of data sources in three formats of widgets tree

I completed the following functions yesterday, the most troublesome of which was making pictures and learning how to use GIMP while making pictures

1. Used the GIMP software to create a few G Icon

2. Supports one-dimensional array data source and automatically groups the data in the data source according to the specified attributes

running result:

3. Supports one-dimensional array data source indicating parent-child relationship by pid and id

Running effect:

4. Data source that supports tree structure

running result:

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