2018-12-23 13:07:31 +08:00
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# QComboBox
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## 1、Data Linkage
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[View](CityLinkage.py) | [Run](CityLinkage.py)
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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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