The built-in dialog boxes, MsgBox and InputBox$, are very useful for getting input from the user. But sooner or later you will want to go further. You might, while running code, want the user to make a choice from a list, or between several options. For this, you want a UserForm. For example: The program…
In an earlier post, we looked at connecting VBA code to command buttons on the Worksheet, the Quick Access Toolbar and the Ribbon. What about the other ActiveX Controls: The Combo Box, List Box, or Check Box? How about Option Buttons, the Scroll Bar, Spin button, Toggle button, etc.? That’s coming up in this post….
In our previous post, we looked at connecting VBA code to command buttons on the Worksheet, the Quick Access Toolbar and the Ribbon. What about the other Form Controls: The Combo Box, List Box, or Check Box? How about Option Buttons, the Scroll Bar, the Spin button, the Label, etc.? That’s coming up in this…
1. What are Controls? First, some terminology. If you wanted to run a macro from a worksheet, you could create a button on the worksheet for the user to click. Such a button is a Control. There are many types of controls, which we will use in a later post. Apart from Command Buttons to…
A major reason to program Excel Macros is to get the spreadsheet to do something. This post is a goldmine of useful Excel Visual Basic code for talking to Excel. You can get use the routines stand-alone. Alternatively, you can save retyping or copy-pasting: Get the file Macros.xlsm free of charge from us. 1. Table…
1. What are Objects and Collections? Visual Basic defines a number of what it calls Objects. Examples of Objects are: In object-orientated terminology, Objects belong to Classes. Collections are groups of Objects. Here are some examples of Collections that Visual Basic defines: 2. The Excel Object Model Excel, too, has objects of its own. When…
Before Excel 2003, you could get a complete list of Visual Basic Functions by looking in Visual Basic Help > Contents > Functions. In Excel 2010, entering “Functions” into the Help Search box produces nothing useful. Using a specific category, e.g. “Math Functions”, may be more productive. Please be aware of what references to “Excel…
It is difficult to make your program foolproof, because fools are so ingenious! Even so, one should make an effort to trap and handle errors. You should not let the program simply crash if there is a problem, whether due to bad data, faulty calculation, or whatever. This is what we call Error-Handling. Excel Visual…
1. MsgBox MsgBox (Message Box) brings up a dialog box with a title bar, a message of our choice, and a choice of icons and buttons. The function can return a value that tells us which button the user clicked. We have seen MsgBox in passing in earlier posts. Here is the syntax of the…
In Alice in Wonderland by Lewis Carroll, at the trial of the Knave of Hearts, the White Rabbit asks the King how to read the evidence. “Begin at the beginning, the King said, very gravely, and go on till you come to the end: then stop.” It would be easy if all computer programs did…
In this post, we will give you some more of the basic (forgive the pun) building blocks of the Visual Basic programming language. We will cover formulas, assigning values, logical comparison, constants, comments, and continuation lines. We conclude with two small examples. One of them demonstrates our first Error Trap. 1. Formulas We have already…