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extension MPX

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  • extension MPX

    Recent a problem occurs. The records didn't come up on the report. After hours diagnosed. I found it was mpf file which caused the problem. I deleted these files and work fine. It happens several times. So how do I do to avoid it? Thanks in advance.

    :) Romy

  • #2
    From the documentation...





    The <QUERY>.DROP() method deletes the query list file ($$*.MPX) referenced by the <QUERY> object pointer.
    There can be only one.


    • #3
      I use query to search for records. if found, I will open a form or a browse to view. When I close the form or the browse, what do I do to drop the query? I mean how to retrieve query object. Thanks.

      :) Romy


      • #4
        not sure what you mean by ...

        I use query to search for records.
        Query genie, query by form, or how?

        I did find this in the documentation.

        To remove saved queries place the following Xbasic statement under the OnPush event of a button:

        dim tbl as P

        tbl = table.current()

        The same code could be used as the first code in the sequence that queries and opens the form or browse to view, thus removing all previous queries
        There can be only one.


        • #5
          Stan, thank. I use these to query.
          formfilter = "smatch(phone,'" + cphone + "*') .and. (.not. (dead_file))"
          formorder = "REF_NUMBER"
          b:tables:address.filter_expression = formfilter
          b:tables:address.order_expression = formorder
          idx = b:tables:address.index_primary_get()
          recs = idx.records_get()

          if recs>0 then

          end if

          I have several browses shared the same toolbar(just one button 'close'). In the button, I will put tbl.QUERY_DETACH_ALL(). But if there is not a query attached, I will get error. How to detement the browse or From which has a query?


          :) Romy


          • #6
            If you use tbl.QUERY_DETACH_ALL() and there are no queries you will not get an error.
            There can be only one.


            • #7

              :) Romy


              • #8
                This script can be attached to a button or be placed in the on exit event

                Charlie Crimmel

                DIM path(10) as c

                path(1) = a5.get_path() + chr(92)
                path(2) = a5.get_private_path() + chr(92)
                pcount = 2
                IF a5.get_private_path() <> a5.get_exe_path()
                path(3) = a5.get_exe_path() + chr(92)
                pcount = 3
                END IF
                '--- NEVER PUT THESE FILES THERE.

                ' NOW DELETE ANY "$$**.*" FILES THAT ARE NOT LOCKED.
                fcount = 0
                FOR x = 1 to pcount
                type_of_files = 0 + FILE_FIND_ARCHIVE + FILE_FIND_READONLY + FILE_FIND_HIDDEN
                dfiles = filefind.first( path(x) + "$$*.*", type_of_files )
                WHILE .not.dfiles.eof()
                fname = '*** GET THE FILE NAME.
                ON ERROR goto Continue_next '*** FIND OUT IF THE FILE IS LOCKED.
                fp = fname, file_rw_exclusive )
                ON ERROR goto 0
                fp.close() '*** FILE IS NOT LOCKED SO CLOSE IT AND REMOVE IT.
                file.remove( fname )
                fcount = fcount + 1
                ON ERROR goto 0
       '*** GET NEXT FILE IN LIST.
                END WHILE

                trace.writeln( ltrim(str( fcount )) + " '$$' files deleted" )



                • #9
                  I put above code on exit programing button. But It didn't work for one computer. Every two day I need to delete the *.MPX in c:\program files\a5v5runtime\. Do you think I need to reinstall runtime and re-create showdow for that computer? Thanks.
                  :) Romy


                  • #10
                    I tried to post a reply earlier but it didn't work. Let's try again....

                    I recommend putting the script in the Autoexec script. When you first start the application, none of the $$ files will be locked by your application and they should be able to be deleted unless someone else's system has them locked. However, when you exit, your app may still have some of the files locked and they can't be deleted.

                    You shouldn't be accumulating huge numbers of $$ files when using this routine even in the Exit event. It might be a day or two behind but, when it runs, it should delete anything that isn't locked. However, I did notice that you said it was on the Exit BUTTON - are you SURE your users are actually using the Exit button? If they are clicking the 'X' instead, then the files won't be deleted. That's another good thing about the Autoexec - it runs every time regardless of what the user does.


                    • #11

                      Thank you very much for your good suggestion.

                      :) Romy


                      • #12

                        Do you have "delete all query list files when exiting Alpha Five or closing the Database" set? This is available in the View | Settings | Queries menu.

                        -- tom


                        • #13
                          Yes, I already set that.
                          :) Romy