QQConditionRange: Range query for QQuery

Even though QQConditionRange can be used in the context of building any QQuery, its main motivation is its use with the QDataGrid, to allow for range filters. So let's take the simple datagrid from the example of "Adding Filters to Your QDataGrid", and make the filter on Id column allow ranges. We would like to allow the user to use ranges such as 7:10 in the filter box. To accomplish this, all we need to do is to replace QQ:Equal by QQConditionRange when setting the Filter property of the column. Try it out on the data grid below. Note that the filter still accepts simple values and treats them as before - it finds the exact matches. We can also do one-sided ranges, such as 7: (which means everything greater or equal than 7) or :10 (which means everything less or equal than 10). When setting up the QQConditionRange filter you can control if the boundaries of the filter are inclusive or exclusive. You can also control if the values should be trimmed after they are split.