Returns or sets an MsoAutomationSecurity constant that represents the security mode Microsoft Office PowerPoint uses when programmatically opening files. This property is automatically set to msoAutomationSecurityLow when the application is started. Therefore, to avoid breaking solutions that rely on the default setting, you should be careful to reset this property to msoAutomationSecurityLow after programmatically opening a file. Also, this property should be set immediately before and after opening a file programmatically to avoid malicious subversion. Read/write.

Syntax

expression.AutomationSecurity

expression A variable that represents an Application object.

Return Value
MsoAutomationSecurity

Remarks

The value of the property will not apply to security warnings. For example, if the user sets the DisplayAlerts property equal to False and the AutomationSecurity property to msoAutomationSecurityByUI, while the user is on Medium security level, then there will be security warnings while the macro is running. This allows the macro to trap file open errors, while still showing the security warning if the file open succeeds.

MsoAutomationSecurity can be one of these MsoAutomationSecurity constants.
msoAutomationSecurityByUI Uses the security setting specified in the Trust Center dialog box.
msoAutomationSecurityForceDisable Disables all macros in all files opened programmatically without showing any security alerts.
msoAutomationSecurityLow Enables all macros. This is the default value when the application is started.

Example

This example captures the current automation security setting, changes the setting to disable macros, displays the Open dialog box, and after opening the selected presentation, sets the automation security back to its original setting.

Visual Basic for Applications 
Sub Security() Dim secAutomation As MsoAutomationSecurity secAutomation = Application.AutomationSecurity Application.AutomationSecurity = msoAutomationSecurityForceDisable Application.FileDialog(msoFileDialogOpen).Show Application.AutomationSecurity = secAutomation End Sub

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