Qt 鼠标/触屏绘制平滑曲线（矢量/非矢量）

[{"title":"（ 12 个子文件 10KB ） Qt 鼠标/触屏绘制平滑曲线（矢量/非矢量）","children":[{"title":"WritingBoard-Demo","children":[{"title":"wbcanvasitem.h <span style='color:#111;'> 1.75KB </span>","children":null,"spread":false},{"title":"wbtempcanvaslayer.cpp <span style='color:#111;'> 1.45KB </span>","children":null,"spread":false},{"title":"clineobj.h <span style='color:#111;'> 1.71KB </span>","children":null,"spread":false},{"title":"WritingBoard.pro <span style='color:#111;'> 1.18KB </span>","children":null,"spread":false},{"title":"wbcanvasitem.cpp <span style='color:#111;'> 7.00KB </span>","children":null,"spread":false},{"title":"wblinevector.cpp <span style='color:#111;'> 2.42KB </span>","children":null,"spread":false},{"title":"main.cpp <span style='color:#111;'> 531B </span>","children":null,"spread":false},{"title":"wblinevector.h <span style='color:#111;'> 941B </span>","children":null,"spread":false},{"title":"wbtempcanvaslayer.h <span style='color:#111;'> 793B </span>","children":null,"spread":false},{"title":"wbgraphicsscene.cpp <span style='color:#111;'> 3.26KB </span>","children":null,"spread":false},{"title":"wbgraphicsscene.h <span style='color:#111;'> 882B </span>","children":null,"spread":false},{"title":"wbcommondef.h <span style='color:#111;'> 316B </span>","children":null,"spread":false}],"spread":false}],"spread":true}]