CalculatorForm 0 0 358 320 简易计算器（Designer 版） 0 50 16777215 80 true Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter 0 Qt::AlignRight|Qt::AlignTrailing|Qt::AlignVCenter true 7 8 9 ÷ 4 5 6 × 1 2 3 - 0 . = + C ⌫ ( )