query regarding dismissal of C.W.P

One can file a writ appeal before the High COurt if the order challenged is passed by a single judge. The writ appeal will be hard by a division bench. The SLP before the Supreme Court can be filed thereafter.

If the writ petition is dismissed by the High Court - either by the single Judge or by the Division Bench - and there  is any apparent error  or mistake on the face of the  record or for any other sufficient reason, remedy of  review  application before the same Judge or Bench  within 30 days  is  available.  Alternatively writ appeal  to the Division Bench, if the Judgement is from a single Judge, and to the Supreme Court - if the  judgement is from the Division Bench of the High Court is also available.  Further,  there are decisions that simultaneous review and writ appeals are also legal.