Learning MicroStation VBA

Chapter 16: Searching In Files

Our design files range in complexity from one or two elements to many thousands. The number of elements can vary as well as the element types (lines, circles, arcs, text) and colors. Levels, line styles and classes can differ from element to element. Line weights and transparency can also vary. As we begin searching in our files, we will learn how to discover these properties we find in our files.

The Basics Of Searching Files

Let's begin by examining each element found in a file.

Sub <b class="bold">TestScanAllA</b>()    Dim myElement As Element    Dim myEnum As ElementEnumerator    Set myEnum = ActiveModelReference.Scan()    While myEnum.MoveNext        Set myElement = myEnum.Current        Debug.Print myElement.Type    WendEnd Sub

This procedure prints the type property value of each element in the active model to the Immediate Window.

Running the procedure TestScanAllA results in a list of numbers telling us the type of element found. This number references the msdElementType enumeration.

Here is a listing of the msdElementType enumeration's members:

msdXDatumTypeWorldSpacePositionmsdElementType44 = 44msdElementTypeArc = 16msdElementTypeBsplineBoundary = 25msdElementTypeBsplineCurve = 27msdElementTypeBsplineKnot = 26msdElementTypeBsplinePole = 21msdElementTypeBsplineSurface = 24msdElementTypeBsplineWeight = 28msdElementTypeCellHeader = 2msdElementTypeCellLibraryHeader = 1msdElementTypeComplexShape = 14msdElementTypeComplexString = 12msdElementTypeCone = 23msdElementTypeConic = 13msdElementTypeCurve = 11msdElementTypeDesignFileHeader = 9msdElementTypeDgnStoreComponent = 38msdElementTypeDgnStoreHeader = 39msdElementTypeDigSetData = 8msdElementTypeDimension = 33msdElementTypeEllipse = 15msdElementTypeGroupData = 5msdElementTypeLevelMask = 99msdElementTypeLevelSymbology = 10msdElementTypeLine = 3msdElementTypeLineString = 4msdElementTypeMatrixDoubleData = 103msdElementTypeMatrixHeader = 101msdElementTypeMatrixIntegerData = 102msdElementTypeMeshHeader = 105msdElementTypeMicroStation...

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