MainColumn (Solibri API 9.12.4.18 API)

```
public interface MainColumn
```
MainColumn represents the first column of the table. This column is used to control the tree structure, being the only column that can be used to open and close leaves.

Since:

9.12.0

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  void hide()
  Hides this column from the UI.
  
  void show()
  Shows this column in the UI.

- Method Detail
  - hide
```
void hide()
```
    Hides this column from the UI. If the column was already hidden, this does nothing.
    
    Since:
    
    9.12.0
  - show
```
void show()
```
    Shows this column in the UI. If the column was already shown, this does nothing.
    
    Since:
    
    9.12.0