VB的各个文本输入控件中变换焦点，并在当前输入框添加背景色，按键盘上的方向键就可自动向下切换输入框焦点。当然，点击鼠标也是可以的。如测试截图所示，文本框控件中的焦点可在公司名称、姓名、地址、联系电话、职务、邮编、手机中自由切换-VB text input control for each transformation focus and add a background color in the current input box, press the arrow keys on the keyboard can automatically switch the focus down to the input box. Of course, the click of the mouse is also possible. As shown in the test shots, the focus of the text box control to switch freely in the company name, name, address, telephone number, title, zip code, phone