assume_insert
Description:
[ NoWrapper ]
public virtual void assume_insert (string text, int text_length, int virt_pos, int offset)
  public virtual void assume_insert (string text, int text_length, int virt_pos, int offset)
To be defined by children classes to handle insert themselves
Parameters:
| this | a Entry | 
| text | the text to be inserted | 
| text_length | 
 | 
| virt_pos | the position where  | 
| offset | an offset to add to positions using  |