本文详细介绍了在将D3d11AppQt设置为其他小部件的子小部件并在Unigine 2.7.1中启动引擎时遇到的崩溃问题。通过调试发现，在AppQt的setVideoMode函数中调用了QApplication::processEvents，进而触发了未完全初始化的引擎对象更新，导致崩溃。文章提供了修复此问题的方法。
with unigine 2.7.1 qt frame
after set the D3d11AppQt as sub widget of other widget (the crash bug will not occure in center widget),and start the engine , unigine will get crash over here.
after debuging ,find that there was called QApplication::processevent when in setVideoMode function in AppQt when an engine object initialization, the processevent will call the timerEvent.
however ,in that time, engine object just do not finish it's initialization, then do the update will cause crash.
below is my resolution to fix that.
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