Thread  Features and ThreadFeatureData Objects

To create a Thread  feature:

1. See the IThreadFeatureData examples.

2. Ensure that Tools > Options > System Options > File Location > Thread Options > Folder contains thread profiles (*.sldlfp).

3. Open a part document with a Hole Wizard hole, Advanced Hole, or Extruded Cut.

4. Call IFeatureManager::CreateDefinition(swFeatureNameID_e.swFmSweepThread) to create a new ThreadFeatureData object.

5. Initialize the thread feature data object with default property settings using IThreadFeatureData::InitializeThreadData.

6. Select thread feature reference entities using IModelDocExtension::SelectByRay:
   • Edge of cylinder where the thread begins with Mark = 1.
   • Up To Selection end condition reference with Mark = 1.
   • (Optional) Starting location of the thread helix with Mark = 2, (only if step 1 does not select a planar circular edge):
     • vertex
     • reference point
     • edge
     • reference axis
     • reference plane
     • planar surface

7. Set IThreadFeatureData::Edge with the selection from step 6.1.

8. Call IThreadFeatureData::SetEndConditionReference with Value set to the selection from step 6.2.

9. Set IThreadFeatureData::StartEntity with the selection from step 6.3.

10. Modify other property settings in the ThreadFeatureData object.

11. Create the thread feature by calling IFeatureManager::CreateFeature.
     

To edit a Thread feature:
 

1. Call IFeature::GetDefinition.
    
2. Call IThreadFeatureData::AccessSelections.
    
3. Modify property settings in the ThreadFeatureData object.
    
4. Call IFeature::ModifyDefinition if you modified the feature or IThreadFeatureData::ReleaseSelectionAccess if you did not modify the feature.