QT表格固定第一列，拖动时第一列不会遮挡

[{"title":"（ 24 个子文件 1.44MB ） QT表格固定第一列，拖动时第一列不会遮挡","children":[{"title":"frozencolumn","children":[{"title":"说明.txt <span style='color:#111;'> 19B </span>","children":null,"spread":false},{"title":"grades.txt <span style='color:#111;'> 1.77KB </span>","children":null,"spread":false},{"title":"grades.qrc <span style='color:#111;'> 95B </span>","children":null,"spread":false},{"title":"Makefile <span style='color:#111;'> 31.79KB </span>","children":null,"spread":false},{"title":"frozencolumn.pro <span style='color:#111;'> 222B </span>","children":null,"spread":false},{"title":"frozencolumn.pro.user.803cce6.4.8-pre1 <span style='color:#111;'> 23.33KB </span>","children":null,"spread":false},{"title":"release","children":null,"spread":false},{"title":"Makefile.Debug <span style='color:#111;'> 46.34KB </span>","children":null,"spread":false},{"title":"debug","children":[{"title":"qrc_grades.obj <span style='color:#111;'> 9.00KB </span>","children":null,"spread":false},{"title":"qrc_grades.cpp <span style='color:#111;'> 11.65KB </span>","children":null,"spread":false},{"title":"frozencolumn.ilk <span style='color:#111;'> 1.02MB </span>","children":null,"spread":false},{"title":"frozencolumn.vc.pdb <span style='color:#111;'> 2.10MB </span>","children":null,"spread":false},{"title":"frozencolumn.exe <span style='color:#111;'> 99.00KB </span>","children":null,"spread":false},{"title":"frozencolumn.pdb <span style='color:#111;'> 2.43MB </span>","children":null,"spread":false},{"title":"moc_predefs.h <span style='color:#111;'> 276B </span>","children":null,"spread":false},{"title":"moc_freezetablewidget.cpp <span style='color:#111;'> 4.25KB </span>","children":null,"spread":false},{"title":"moc_freezetablewidget.obj <span style='color:#111;'> 99.10KB </span>","children":null,"spread":false},{"title":"main.obj <span style='color:#111;'> 110.26KB </span>","children":null,"spread":false},{"title":"freezetablewidget.obj <span style='color:#111;'> 164.69KB </span>","children":null,"spread":false}],"spread":false},{"title":"frozencolumn.pro.user <span style='color:#111;'> 24.36KB </span>","children":null,"spread":false},{"title":"freezetablewidget.h <span style='color:#111;'> 3.33KB </span>","children":null,"spread":false},{"title":"main.cpp <span style='color:#111;'> 3.92KB </span>","children":null,"spread":false},{"title":"freezetablewidget.cpp <span style='color:#111;'> 6.38KB </span>","children":null,"spread":false},{"title":"Makefile.Release <span style='color:#111;'> 46.08KB </span>","children":null,"spread":false},{"title":".qmake.stash <span style='color:#111;'> 1.34KB </span>","children":null,"spread":false}],"spread":false}],"spread":true}]