QT 基于mainwindow添加一个文件菜单

[{"title":"（ 14 个子文件 699KB ） QT 基于mainwindow添加一个文件菜单","children":[{"title":"mainwindow","children":[{"title":"Debug","children":[{"title":"release","children":null,"spread":false},{"title":"debug","children":[{"title":"moc_mainwindow.cpp <span style='color:#111;'> 2.67KB </span>","children":null,"spread":false},{"title":"main.o <span style='color:#111;'> 489.20KB </span>","children":null,"spread":false},{"title":"mainwindow.o <span style='color:#111;'> 332.48KB </span>","children":null,"spread":false},{"title":"test.exe <span style='color:#111;'> 1.16MB </span>","children":null,"spread":false},{"title":"moc_predefs.h <span style='color:#111;'> 9.66KB </span>","children":null,"spread":false},{"title":"moc_mainwindow.o <span style='color:#111;'> 409.47KB </span>","children":null,"spread":false}],"spread":true},{"title":".qmake.stash <span style='color:#111;'> 973B </span>","children":null,"spread":false},{"title":"Makefile <span style='color:#111;'> 26.42KB </span>","children":null,"spread":false},{"title":"Makefile.Debug <span style='color:#111;'> 35.46KB </span>","children":null,"spread":false},{"title":"Makefile.Release <span style='color:#111;'> 35.54KB </span>","children":null,"spread":false}],"spread":true},{"title":"mainwindow.cpp <span style='color:#111;'> 1.19KB </span>","children":null,"spread":false},{"title":"main.cpp <span style='color:#111;'> 183B </span>","children":null,"spread":false},{"title":"mainwindow.h <span style='color:#111;'> 227B </span>","children":null,"spread":false},{"title":"mainwindow.pro <span style='color:#111;'> 260B </span>","children":null,"spread":false}],"spread":true}],"spread":true}]