Hi All, I have inherited an excel document with loads of floating numbers of the same value throughout different modules. Im thinking of creating a module with global const variables in and referencing them in the various modules. Unfortunately in my head using a global variable is bad but as its a const im. You use the Const statement to declare a constant and set its value. By declaring a constant, you assign a meaningful name to a value. Once a constant is declared, it cannot be modified or assigned a new value.
Dumb-Question-Of-The-Year" moment that I just have to pose no matter how newbie it seems. I am certain that there is a method of doing this at the very.
Introduction to VBA Language Reference. NET has spoiled us 🙂 Your declaration is not valid for VBA. Only constants can be given a value upon application load. Here’s a sample declaration from one of my vba projects: VBA Constant Image. You declare them like so: Public Const APOSTROPHE_KEYCODE = 222. Using Global Constants to store environment. Is it a good practice to use global constants, types and functions inside. I never put public constants in a class module.
All, and I mean all, of my public variables and constants are in a standard module called MGlobals. In VBA, as in any programming language Variables and Constants are names that represent values. As suggested by the names, the values of Variables can change, while Constants generally have fixed values. For example, you might use the constant "Pi" to store the value 3. So I have a set of colors and font names I must rely on when displaying my forms.
Color = vbBlue You can find available constants in the Object Browser. You can list global constants ( constants that are available anywhere in your VBA code) by selecting globals at the top of the. I currently have a MAIN sub that calls others. At the top of each sub I declare any constants needed but they seem to be unavailable to other subs, and now I have reached a point where I. Bnix Agreed i feel that is the case decreasing performance can be issue more on larger projects thou: Code: Public Const lngLEVELS As Long = 5. If you look at my examples i would only assign the value 5 inside teh procedure for this very reason, in my opinion a better, cleaner and. This blog explains the nuts and bolts of Excel VBA variables, including how to declare them, how to set their scope and all sorts of other tips and tricks. If you want to create a truly global constant – one whose value will be available within all workbooks, all of the time – you need to create an add-in. A constant is a meaningful name that takes the place of a value that does not change.
You should always use constants in place of hard coded values or strings. Constants must be declared at the very top and cannot be declared below any properties, subroutines or functions. Unlike variables, constants cannot. But, just a suggestion, you should be cautious while using global variable. A more robust way to exchange information across modules is to use fun. Hi All, I am trying to use the following code to define a global constant.
Public Const WorkSht = "Detailed Schedule" However, I get a run time error, and found that WorkSht is empty. Spring naar Global Scope – When a variable or constant is declared as global it is visible to all procedures and modules that comprise the application. Global variables and constants, as with Module level variables, must be declared outside of any procedures in the Declarations section and must use the Public. Local variables defined in a form instance, usually when the form opens.
These variables persist as long as the form remains open. Something really practical in VBA or any language is constants, example Public Const Timeout As Integer = 5 But what I really would need is a array or lookup constant.