Hi Kuldeep,
You can overcome this problem by using this code something like this:
case BoEventTypes.et_FORM_RESIZE:
{
SAPbouiCOM.Matrix oMatrix = (SAPbouiCOM.Matrix)m_SBO_Form.Items.Item(enControlName.Matrix).Specific;
oMatrix.Columns.Item(enControlName.colCode).Width = 90;
oMatrix.Columns.Item(enControlName.colName).Width = 150;
oMatrix.Columns.Item(enControlName.colDescription).Width = 200;
} break;
Make sure to use it on BeforeAction = false.
Hope it helps.
Thanks & Regards
Ankit Chauhan