Count number of column header

Suite and Optimus Suite 5
#1

Hi,

  1. How do I count the total number of “column” in my grid?

  2. How do I count the total number of “header column” with filtering attach to it and their column index?

  3. How do I count the total number of “header column” without filtering attach to it and their column index?

Some of my “header column” has filter and some don’t have.

#2
  1. getColumnsNum()
    2, 3. There is no such public methods.