Files with VSTM extension are template files created with Microsoft Visio that support macros. Unlike VSDX files, files created from VSTM templates can run macros that are developed in Visual Basic for Applications (VBA) code. Learn more about this file format here.

public static readonly DiagramFileType Vstm

Public Shared ReadOnly Vstm As DiagramFileType

public:
static initonly DiagramFileType^ Vstm

static val Vstm: DiagramFileType