Hide Table of Contents
PreTrimSurface Method (IFeatureManager)

Sets the trimming options before trimming a surface.

.NET Syntax

Visual Basic (Declaration) 
Function PreTrimSurface( _
   ByVal BMutualTrimIn As System.Boolean, _
   ByVal BSplitSystemIn As System.Boolean, _
   ByVal BSplitLinearIn As System.Boolean, _
   ByVal BRemovePickedIn As System.Boolean _
) As System.Boolean
Visual Basic (Usage) 
Dim instance As IFeatureManager
Dim BMutualTrimIn As System.Boolean
Dim BSplitSystemIn As System.Boolean
Dim BSplitLinearIn As System.Boolean
Dim BRemovePickedIn As System.Boolean
Dim value As System.Boolean
value = instance.PreTrimSurface(BMutualTrimIn, BSplitSystemIn, BSplitLinearIn, BRemovePickedIn)
System.bool PreTrimSurface( 
   System.bool BMutualTrimIn,
   System.bool BSplitSystemIn,
   System.bool BSplitLinearIn,
   System.bool BRemovePickedIn
System.bool PreTrimSurface( 
&   System.bool BMutualTrimIn,
&   System.bool BSplitSystemIn,
&   System.bool BSplitLinearIn,
&   System.bool BRemovePickedIn


True to use the selected intersecting surfaces as the trimming surfaces (mutual), false to use the selected surface, plane, or sketch as the trim tool (standard)
True to let the SOLIDWORKS application determine which surfaces to trim, false to trim all possible surfaces
False to naturally extend any trims along the intersecting surfaces, true to extend any trims linearly along the intersecting surfaces
True to remove the selected surfaces, false to keep the selected surfaces

Return Value

True if successful, false if not



After calling this method:

  1. Select the trimming surfaces or trim tool.
  2. Optionally, call IFeatureManager::SolidForTrim.
  3. Call IFeatureManager::PostTrimSurface.

See Also


SOLIDWORKS 2004 FCS, Revision Number 12.0

Provide feedback on this topic

SOLIDWORKS welcomes your feedback concerning the presentation, accuracy, and thoroughness of the documentation. Use the form below to send your comments and suggestions about this topic directly to our documentation team. The documentation team cannot answer technical support questions. Click here for information about technical support.

* Required

Subject:   Feedback on Help Topics
Page:   PreTrimSurface Method (IFeatureManager)
*   I acknowledge I have read and I hereby accept the privacy policy under which my Personal Data will be used by Dassault Systèmes

Print Topic

Select the scope of content to print:


We have detected you are using a browser version older than Internet Explorer 7. For optimized display, we suggest upgrading your browser to Internet Explorer 7 or newer.

 Never show this message again

Web Help Content Version: API Help (English only) 2016 SP05

To disable Web help from within SOLIDWORKS and use local help instead, click Help > Use SOLIDWORKS Web Help.

To report problems encountered with the Web help interface and search, contact your local support representative. To provide feedback on individual help topics, use the “Feedback on this topic” link on the individual topic page.