First record a follow-up supplement:
Roughly c ++ inherits QAbstractListModel to rewrite custom model
Put a table of information in the model to store all the information of a table for QList <Record> list
Record is a record of a table, and then a function is provided in the model Record * getRecord (int row)
Get a record of a certain line, here mistakenly passed the list [row] in the member to the interface, resulting in the repeated release of the block of memory
Record passed in main.cpp
qmlRegisterType<Record>("uri", 1, 0, "Record "); 注册进qml中提供给界面接收用。 然后界面关闭后主动将该块内存释放了，导致内存的重复释放，Solution: In Record * getRecord (int row), the new Record block of memory is provided to the interface
Record *data = new Record；
(* data) = is [row]
Solve the problem of multiple memory release
