矩阵键盘显示按键号

[{"title":"（ 6 个子文件 25KB ） 矩阵键盘显示按键号","children":[{"title":"矩阵键盘显示按键号","children":[{"title":"tu","children":[{"title":"Last Loaded tu.DBK <span style='color:#111;'> 33.00KB </span>","children":null,"spread":false},{"title":"tu.DSN <span style='color:#111;'> 33.00KB </span>","children":null,"spread":false}],"spread":true},{"title":"test17","children":[{"title":"test17.uvgui.wan <span style='color:#111;'> 69.29KB </span>","children":null,"spread":false},{"title":"test17.uvproj <span style='color:#111;'> 13.53KB </span>","children":null,"spread":false},{"title":"test17.uvopt <span style='color:#111;'> 4.88KB </span>","children":null,"spread":false},{"title":"test17.c <span style='color:#111;'> 778B </span>","children":null,"spread":false}],"spread":true}],"spread":true}],"spread":true}]