![]() The following example can be useful when extracting hyperlinks from tables of links that have been copied into Excel, when doing post-processing on Excel web queries, or getting the email address from a list of "mailto:" hyperlinks. This file contains the VBA custom functions, so after opening it you will need to enable macros.ĭownload the Example File (CustomFunctions.xlsm)Įxample #1: Get the Address of a Hyperlink To see the following examples in action, download the file below. Adding user defined functions to your workbook will trigger the "macro" flag (a security issue: Tools > Macros > Security.).If you create an add-in containing your UDF's, you may forget that you have used a custom function, making the file less sharable.Excel user defined functions in VBA are usually much slower than functions compiled in C++ or FORTRAN.In other words, UDF's are meant to be used as "formulas", not necessarily "macros". Cannot place a value in a cell other than the cell (or range) containing the formula.If you call another function or macro from a UDF, the other macro is under the same limitations as the UDF.UDF's cannot alter the structure or format of a worksheet or cell. Cannot "record" an Excel UDF like you can an Excel macro.Date calculations prior to 1900 using the built-in VBA date functions.Advanced array formulas and matrix functions.Diagnostics such as checking cell formats.Simplify formulas that would otherwise be extremely long "mega formulas".Create a complex or custom math function.If they don't have your add-in, the functions will not work when they use the spreadsheet. ![]() Warning! Be careful about using custom functions in spreadsheets that you need to share with others. for Excel 2003 or Developer > Excel Add-Ins for Excel 2010+). To create an add-in, save your excel file that contains your VBA functions as an add-in file (. If you want to use a UDF in more than one workbook, you can save your functions to your personal.xlsb workbook or save them in your own custom add-in.
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