Documentation – Manage VBA Codes of Excel Macro-Enabled Workbook with Golang via C++

Gocpp: Password Protect the VBA Project of Excel Workbook with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Password-Protect the VBA Project of Excel Workbook in C++

You can password protect the VBA (Visual Basic for Applications) Project of a workbook with Aspose.Cells using the VbaProject.Protect() method.

Sample Code

The following sample code loads the sample Excel file, accesses its VBA Project, and protects it with a password. Finally, it saves it as the output Excel file.

Gocpp: Find out if VBA Project is Protected with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Find out if a VBA Project Is Protected in C++

You can determine whether the VBA (Visual Basic for Applications) project of your Excel file is protected using Aspose.Cells via the VbaProject.IsProtected property.

Sample Code

The following sample code creates a workbook and then checks if its VBA project is protected or not. It then protects the VBA project and checks again whether the VBA project is protected. Please see its console output for reference. Before protection, VbaProject.IsProtected returns false, but after protection, it returns true.

Console Output

This is the console output of the above sample code for reference.

IsProtected - Before Protecting VBA Project: False

IsProtected - After Protecting VBA Project: True

Gocpp: Check if VBA Project is Protected and Locked for Viewing with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Check if VBA Project is Protected and Locked for Viewing in C++

Aspose.Cells allows you to check whether the VBA (Visual Basic for Applications) project of an Excel file is protected and locked for viewing. For this, the API provides the VbaProject.GetIslockedForViewing() property. If it is locked for viewing, the VbaProject.GetIslockedForViewing() property returns true.

Sample Code

The following sample code loads the sample Excel file and checks whether the VBA (Visual Basic for Applications) project of the Excel file is protected and locked for viewing. Please also see its console output for reference.

Console Output

This is the console output of the above sample code when executed with the provided sample Excel file.

Is VBA Project Locked for Viewing: True

Gocpp: Assign Macro to Form Control with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Aspose.Cells allows you to assign a macro code to a form control like a button. Please use the Shape.GetMacroName() property to assign a new macro code to a form control inside the workbook.

The following sample code creates a new workbook, assigns a macro code to a form button, and saves the output in the XLSM format. Once you open the output XLSM file in Microsoft Excel, you will see the following macro code.

 Sub ShowMessage()

    MsgBox "Welcome to Aspose!"

End Sub

Assign Macro to Form Control in C++

Here is the sample code to generate the output XLSM file with a macro code.

Gocpp: Check if VBA project in a Workbook is Signed with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

You can check if your VBA project is signed or not using Microsoft Excel via Tools > Digital Signatures… menu command. Similarly, you can check it programmatically using Aspose.Cells Workbook.VbaProject.IsSigned.

Check if VBA project in a Workbook is Signed in C++

The following code loads the workbook and checks if its VBA project is signed using Workbook.VbaProject.IsSigned property. The property will return true if the project is signed, otherwise it will return false.

Gocpp: Add a library reference to the VBA project in workbook with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Sometimes, you need to add or register a library reference to the VBA project through code. You can do it using Aspose.Cells VbaProject.References.AddRegisteredReference() method.

Add a library reference to a VBA project in Microsoft Excel

In Microsoft Excel, you can add a library reference to the VBA project by manually clicking Tools > References….

Add a library reference to the VBA project in a workbook using Aspose.Cells

The following sample code adds or registers two library references to the VBA project in the workbook using the VbaProject.References.AddRegisteredReference() method.

Gocpp: Export VBA Certificate to File or Stream with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Aspose.Cells allows you to export the VBA digital certificate to a stream, such as a file or a memory stream. You can access the raw data of the VBA digital certificate using the Workbook.GetCertRawData() property.

Export VBA Certificate to File or Stream in C++

Please see the following sample code that saves the raw data of the VBA certificate into a file. You can download the sample Excel file used in this code from the provided link.

Gocpp: Check if VBA Code is Signed with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Aspose.Cells allows the user to check if the VBA code project is signed. Please use the VbaProject::IsSigned property to determine whether the VBA code project is signed.

The following code demonstrates how to check if the VBA code is signed using the VbaProject::IsSigned property. You can use any of your Excel files to test this code. For testing purposes, you can use this Excel file used in the code.

Check if VBA Code is Signed in C++

Console Output

Below is the console output of the above code using the sample Excel file provided by the link.

  

Is VBA Code Project Signed: True

Gocpp: Digitally Sign a VBA Code Project with Certificate in C++

Mon, 01 Jan 0001 00:00:00 +0000

You can digitally sign your VBA code project using Aspose.Cells with its Workbook.VbaProject.Sign() method. Please follow these steps to verify whether your Excel file is digitally signed with a certificate.

Click Visual Basic from the Developer tab to open Visual Basic for Applications IDE.
Click Tools > Digital Signatures… in the Visual Basic for Applications IDE.

It will show the Digital Signature Form indicating whether the document is digitally signed with a certificate or not.

Digitally Sign a VBA Code Project with Certificate in C++

The following sample code illustrates how to use the Workbook.VbaProject.Sign() method. Here are the input and output files of the sample code. You can use any Excel file and any certificate to test this code.

Source Excel file used in the sample code.
Sample pfx file to create a digital signature. Please install it on your computer to run this code. Its password is 1234.
Output Excel file generated by the sample code.

Gocpp: Check if Digital Signature of VBA Code is Valid with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Aspose.Cells allows you to check if the digital signature of the VBA code is valid using the Workbook.VbaProject.IsValidSigned property. It will return true if the signature is valid; otherwise, it will return false. The digital signature of the VBA code becomes invalid when you change the VBA code.

Check if Digital Signature of VBA Code is Valid in C++

The following code demonstrates the usage of this property using the sample Excel file (5115030.xlsm), which you can download from the provided link. The same Excel file has a valid signature, but when we modify its VBA code, save the workbook, and then re‑check, we find that its signature has become invalid.

Gocpp: Copy VBA Macro UserForm DesignerStorage from Template to Target Workbook with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Possible Usage Scenarios

Aspose.Cells allows you to copy a VBA project from one Excel file into another Excel file. A VBA project consists of various types of modules, such as Document, Procedural, Designer, etc. All modules can be copied with simple code, but for the Designer module there is extra data called Designer Storage that must be accessed or copied. The following two methods deal with Designer Storage:

Copy VBA Macro UserForm DesignerStorage from Template to Target Workbook

Please see the following sample code. It copies the VBA project from the template Excel file into an empty workbook and saves it as the output Excel file. If you open the VBA project inside the template Excel file, you will see a User Form as shown below. The User Form consists of Designer Storage, so it will be copied using VbaModuleCollection.GetDesignerStorage() and VbaModuleCollection.AddDesignerStorage() methods.

The following screenshot shows the output Excel file and its contents, which were copied from the template file. When you click Button 1, it opens the VBA User Form, which contains a command button that displays a message box when clicked.

Sample Code

Gocpp: Filter VBA Project while loading a workbook with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Filter VBA Project while loading an Excel workbook in C++

Some .xlsm/.xlsb files contain an extremely large amount of macros (or very, very long macros). Aspose.Cells will unconditionally load this (meta) data when opening such workbooks. You may need to control this though LoadDataFilterOptions when you really only need to extract sheet names for a large number of workbooks, thus skipping over such unneeded content. This filter is provided via a new option, LoadDataFilterOptions.VBA.

Sample Code

The following sample code loads a workbook such that only VBA is filtered. A sample file for testing this feature can be downloaded from the following link:

sampleMacroEnabledWorkbook.xlsm

Gocpp: How to Prevent Users from Printing Excel File with Golang via C++

Mon, 01 Jan 0001 00:00:00 +0000

Possible Usage Scenarios

In our daily work, there may be some important information in an Excel file; in order to protect internal data from being spread, the company may prohibit printing it. This document explains how to prevent others from printing Excel files.

How to Prevent Users from Printing File in MS-Excel

You can apply the following VBA code to protect your specific file from being printed.

Open the workbook that you do not allow others to print.
Select the Developer tab in the Excel ribbon and click on the View Code button in the Controls section. Alternatively, you can hold down the ALT + F11 keys to open the Microsoft Visual Basic for Applications window.
Then, in the left Project Explorer, double‑click on ThisWorkbook to open the module and add some VBA code.
Then save and close the code, return to the workbook, and when you attempt to print the sample file, printing will be blocked and you will see the following warning box:

How to Prevent Users from Printing Excel File using Aspose.Cells for C++

The following sample code illustrates how to prevent users from printing an Excel file:

Load the sample file.
Get the VbaModuleCollection object from the VbaProject property of the Workbook.
Get the VbaModule object via the “ThisWorkbook” name.
Set the Code property of the VbaModule.
Save the sample file to xlsm format.