This chapter has explained only the most frequently used controls: command buttons, labels, text boxes, option buttons, check boxes, and so on. However, there are a few others you might want to use. This exercise and the next one let you explore two of these controls. In this exercise, you can explore the Spin Button control. Open a new workbook, get into the VBE, add a user form, and place a spin button on the form. You can probably guess the functionality this button should have. If the user clicks the up arrow, a counter should increase. If the user clicks the down arrow, the counter should decrease. To operationalize the button, set its Min, Max, Small Change, and Value properties to 1, 10, 1, and 5 in the Properties window. This will allow the user to change the counter from 1 to 10 in increments of 1, with an initial value of 5. But how would a user know the value of the counter? The trick is to put a text box right below the spin button and make the text box’s Value property equal to the spin button’s Value property (which is the counter). To keep them in sync, write a line of code in the spin button’s Change event handler that sets the text box’s value equal to the spin button’s value. Similarly, write an event handler for the text box’s Change event, so that if the user changes the value in the text box, the spinner’s counter stays in sync with it. Try it out by running the form (by clicking the blue triangle run button in the VBE). How can you make sure that the two controls start in sync when the form is first displayed?
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