2018-12-23 13:07:31 +08:00
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# QComboBox
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2019-03-12 12:47:56 +08:00
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- Catalog
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2019-05-22 11:07:42 +08:00
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- [Data Linkage](#1data-linkage)
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2019-03-12 12:47:56 +08:00
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2018-12-23 13:07:31 +08:00
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## 1、Data Linkage
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2018-12-25 21:55:38 +08:00
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[Run CityLinkage.py](CityLinkage.py)
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2018-12-23 13:07:31 +08:00
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Three level linkage, data file is data.json
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1. use `QComboBox`,`setModel` and `QSortFilterProxyModel` to filter
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2. the filter role is `Qt::ToolTipRole`
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3. can use `QColumnView` maybe like this example
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![CityLinkage](ScreenShot/CityLinkage.gif)
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