Making one selection screen block invisible

Question

Hi,
I want to make one selection-screen block invisible based on one check box value.I have built the screen as follows:
PARAMETERS: pcheck1    TYPE char1  AS CHECKBOX.
SELECTION-SCREEN  BEGIN OF BLOCK b2 WITH FRAME TITLE text-004.
PARAMETERS: pproj    TYPE xxxx ,
            psproj   TYPE xxxx ,
            pobjec   TYPE xxxx .
SELECTION-SCREEN  END OF BLOCK b2.
based on the pcheck value I want to meke the above "SELECTION-SCREEN  BEGIN OF BLOCK b2 " invisible/visible.Can you please tell me how to do it?

Answer 1

You need to set values in structure SCREEN:
screen-invisible = '1' .
screen-input = '0' .
screen-output = '0' .
for all items contained in block.
For example:
AT SELECTION-SCREEN OUTPUT.
  IF <condition>.
    LOOP AT SCREEN.
      CASE screen-name.
        WHEN <block_name> OR
                   <parameter1> or <parameter1_text> or
                   <parameter_N> or <parameter_N_text> .
          screen-invisible = 1.
          screen-input      = 0.
          screen-output    = 0.
        WHEN OTHERS.
      ENDCASE.
      MODIFY SCREEN.
    ENDLOOP.
You can find names of variables which contain parameter texts using debuger.
  ELSEIF sy-tcode = 'ZEUA_EDB_EXPORT'.
    p_path = 'ZUA_EDB_EXPORT'.
  ENDIF.