QT-MAC 运行后程序坞出现图标，但是不显示界面
问题描述
新建一个main window程序后运行程序坞出现图标，但是不显示界面（之前windows从来没遇到过）
然后仔细查看了运行输出，发现提示SDK版本有问题
Project WARNING: Qt has only been tested with version 10.15 of the platform SDK, you’re using 12.3. Project WARNING: This is an unsupported configuration. You may experience build issues, and by using Project WARNING: the 12.3 SDK you are opting in to new features that Qt has not been prepared for. Project WARNING: Please downgrade the SDK you use to build your app to version 10.15, or configure Project WARNING: with CONFIG+=sdk_no_version_check when running qmake to silence this warning.
解决方法
修改pro文件中的配置，实现对于SDK版本的忽略
CONFIG += sdk_no_version_check QMAKE_MACOSX_DEPLOYMENT_TARGET = 10.15
最后记得一定要先清除一下再重新编译，否则不生效
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