What This VBA Code Does
There may be times when you want to incorporate code from your add-ins into other VBA procedures or give others access to call your add-in macros. To prevent errors occurring in the off chance the add-in was unloaded or never installed, you can use VBA code to ensure the add-in is properly loaded into Excel, PowerPoint, or whatever Microsoft Office program you are using.
NOTE: This code will only search the default Microsoft Add-ins folder for your desired add-in file. If you store your add-in files in a custom folder, this code will not work for you.
'PURPOSE: Load Addin from Add-ins Folder If Not Currently Installed
Dim myAddin As AddIn
Dim TestAddin As Variant
Dim StoreError As Long
Dim AddInName As String
Dim AddInExtension As String
AddInName = "MyAwesomeAddin"
AddInExtension = ".xlam"
'Test if Add-in Is Currently Installed
On Error Resume Next
Set TestAddin = Workbooks(AddIns(AddInName).Name)
StoreError = Err
On Error GoTo 0
'If Add-in Not Installed, Find it in Add-ins folder & Load
If StoreError <> 0 Then
For Each myAddin In AddIns
If myAddin.Name = AddInName & AddInExtension Then
myAddin.Installed = False
myAddin.Installed = True
'Could Not Find Add-in to Install
MsgBox "Could not find the " & AddInName & " add-in file to install"
How Do I Modify This To Fit My Specific Needs?
Chances are this post did not give you the exact answer you were looking for. We all have different situations and it's impossible to account for every particular need one might have. That's why I want to share with you: My Guide to Getting the Solution to your Problems FAST! In this article, I explain the best strategies I have come up with over the years to getting quick answers to complex problems in Excel, PowerPoint, VBA, you name it!
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I wish you the best of luck and I hope this tutorial gets you heading in the right direction!