Form1 Form1 0 0 577 305 Simple calculator unnamed 11 6 Layout7 unnamed 0 6 TextLabel1 History: ListBox1 5 7 0 0 200 0 250 32767 LineEdit2 5 0 0 0 250 32767 233 233 233 true ExecButton2 Cl&ear @ListBox1.clear @LineEdit2.setText("Sum: 0") Layout4 unnamed 0 6 TextLabel2 Expression: Layout1 unnamed 0 6 Spacer1 Horizontal Expanding 30 0 ExecButton1 &Calculate false true @ListBox1.insertItem(@expr(@LineEdit1.text), -1) @LineEdit1.clear @LineEdit2.setText("Sum: @expr(@String.replace(@ListBox1.text, "\n", "+"))") Spacer2 Horizontal Expanding 30 0 LineEdit1 Spacer3_2 Vertical Expanding 0 91 Spacer3 Vertical Expanding 0 91 LineEdit1 ExecButton1 ExecButton2 ListBox1