Qt界面ASSERT:window == topLevelWindow断言错误

先来看下bug的提示 ASSERT: “window == topLevelWindow || topLevelWindow->isAncestorOf(window, QWindow::ExcludeTransients)” in file painting\qbackingstore.cpp, line 252 接下来分析哪里出错了 发现是qt的内核的断言，一筹莫展。最后在外网查到这个bug的

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