Regular Expression in QSortFilterProxyModel not working

[Thomas Stein]

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[JonB]

@Thomas-Stein said in Regular Expression in QSortFilterProxyModel not working:

proxyModel.setFilterRegExp("*.png")

Looks like a file wildcard, not a reg exp. That demands literal * character. Don't you intend perhaps: ".*\\.png"?

[Thomas Stein]

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[Bonnie]

1. To solve the filter problem, you need to add proxyModel.setRecursiveFilteringEnabled(true).
   Otherwise you'll only filter the drivers.
2. If you only want to filter with wildcard, simply use proxyModel.setFilterWildcard("*.png") instead of regular expression.
3. The root index of view2 won't be at path, because proxyModel.mapFromSource(dirModel.index(path)) will return an invalid index.
   Maybe because path have not be loaded in dirModel yet?
   You can try to connect to the signal QFileSystemModel::directoryLoaded(const QString &path) and confirm path is loaded, then set the root index of view2

[Thomas Stein]

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