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MicroStation Wiki Changing the Transparency Settings of Levels with VBA
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    Changing the Transparency Settings of Levels with VBA

       
      Applies To 
       
      Product(s): MicroStation
      Version(s): 08.11.09.578
      Environment:  Windows 7 32 bit,Windows 7 64 bit
      Area:  Programming
      Subarea:  VBA
      Original Author: Tristan Anderson, Bentley Technical Support Group
       

     Background Information

    It is often necessary to make major changes in the settings in VBA levels. For example, running in batch mode.

    Many of the potential level attributes such as color, line width, line style, etc. are designed as direct properties available in the VBA object model settings, while others you can change as a VBA wrapper from the MDL add functions.

    Transparency, which can be changed as a property in the Layer Manager, can be given a value between 0 and 100.

    Steps

    To change the transparency settings of levels, a VBA wrapper function is needed. The V8 "MDL Function Reference" states the following:

        VBA Wrapper Declaration

    Declare Function mdlLevel_setTransparency Lib "stdmdlbltin.dll" (ByVal modelRefln As Long, ByVal levelldln As Long, ByVal transparencyIn As Double) As Long

    If you want to apply this declaration into a VBA routine, it might look like the following:

    Declare Function mdlLevel_getTransparency Lib "stdmdlbltin.dll" (ByRef transparencyOut As Double, ByVal modelRefIn As Long, ByVal levelIdIn As Long) As Long
    Declare Function mdlLevel_setTransparency Lib "stdmdlbltin.dll" (ByVal modelRefIn As Long, ByVal levelIdIn As Long, ByVal transparencyIn As Double) As Long
     
    Sub levelTransparency()
    Dim oLv As Level
    For Each oLv In ActiveDesignFile.Levels
        If Not oLv.IsFromLevelLibrary Then
            mdlLevel_setTransparency ActiveModelReference.MdlModelRefP, oLv.ID, 0.4    ' Transparency between 0 and 1
     
        End If
    Next
            ActiveDesignFile.Levels.Rewrite
    End Sub

    The new transparency value must be set as a double value in the range between 0.0 and 1.0 corresponding to the percentage of transparency you want (0% to 100%).

    See Also

    Changing the presentation order of Layers

    • VBAWindows 7 32 bit
    • MicroStation
    • Windows 7 64 bit
    • Programming
    • en
    • 08.11.09.578
    • SELECTsupport
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    • Tristan Anderson Created by Bentley Colleague Tristan Anderson
    • When: Mon, Jul 6 2015 9:42 AM
    • Maggie Fortescue Last revision by Bentley Colleague Maggie Fortescue
    • When: Wed, Jul 8 2015 5:17 PM
    • Revisions: 3
    • Comments: 0
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