You can type a numerical value into the field next to the spin button, or select the value with the up-arrow or down-arrow symbols on the spin button. On the keyboard you can press the up arrow and down arrow keys to increase or reduce the value. You can press the Page Up and Page Down keys to set the maximum and minimum value.
您可以在数值调节钮旁边的字段中键入数值，或使用数值调节钮上的向上箭头或向下箭头符号来选择数值。在键盘上，您可以按向上方向键和向下方向键来增大或减小选值框中的数值。您可以按 Page Up 和 Page Down 键来设置选值框的最大值和最小值。