构建动态计算器
通过合用 DynamicModule 与 Deploy，得到一个执行简单计算的动态界面.
DynamicModule[{a = 0, b = 0}, Deploy[Style[Panel[Grid[Transpose[{{Style["输入一个数字", Red], Style["输入另一个数字", Red], "两个数字的和", "两个数字的差", "两个数字的积"}, {InputField[Dynamic[a], Number], InputField[Dynamic[b], Number], InputField[Dynamic[a + b], Enabled -> False], InputField[Dynamic[a - b], Enabled -> False], InputField[Dynamic[a b], Enabled -> False]}}], Alignment -> Right], ImageMargins -> 10], DefaultOptions -> {InputField -> {ContinuousAction -> True, FieldSize -> {{5, 30}, {1, Infinity}}}}]]]