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Cannot copy previous field....

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  • Cannot copy previous field....

    Scenario:

    Form is based on a single table. Button on the form with this code: topparent.copy_prev_field(). The form is in enter new record mode. no matter which field has focus, when I push the button, I get this error message: Cannot copy from previous record because current object is not a field.

    According to Alpha Help, this is supposed to work. Why does it not work?

    Thanks,

    kenn
    TYVM :) kenn

    Knowing what you can achieve will not become reality until you imagine and explore.

  • #2
    Re: Cannot copy previous field....

    I ran a test creating a simple table and form, added a record, put on a button and inserted code:
    topparent.copy_prev_record()
    I then went into "Enter new record" mode, pushed the button and voila, it worked!
    However, if I sit on an existing record and press the button it errors with:
    "Cannot copy previous record. You must be in enter mode"
    I cannot generate your error so if you give us a stripped down sample maybe we can see assist further.
    Garry

    Comment


    • #3
      Re: Cannot copy previous field....

      Ken, did you find the answer?

      I did as Gary (made a test database with a form and buttons) and found that topparent.copy_prev_record() works, but topparent.copy_prev_field() does not work. I got the same error message as you: Cannot copy from previous record because current object is not a field.

      It appears that when I push the button for copy_prev_field(), the focus shifts from the field to the button, so there is no way for Alpha to know which field to copy from/to.

      Of course, there are other ways to copy from a previous field, but since Alpha gives us this command, it should work.
      Cliff

      Coffee tastes better if the latrines are dug downstream from an encampment.
      - US Army Field Regulations, 1861

      Comment


      • #4
        Re: Cannot copy previous field....

        Of course, there are other ways to copy from a previous field, but since Alpha gives us this command, it should work.
        Because it doesn't work from a button doesn't mean it doesn't work at all. Just that the context is wrong. The command is actually the xbasic behind an action script element.

        Perhaps the usage should be triggered by an onkey event?
        There can be only one.

        Comment


        • #5
          Re: Cannot copy previous field....

          I haven't tried it, but try to activate the field first, i.e.:
          object_with_field.activate()
          topparent.copy_previous_field()

          Comment


          • #6
            Re: Cannot copy previous field....

            Stan, as usual, you are correct. The command works when triggered by an onkey event.

            However, from the help file for <OBJECT>.COPY_PREV_FIELD:

            Example

            This button on a form copies values from the field in the previous record into the corresponding field in the current record that is being entered:

            topparent.copy_prev_field()
            But, I quibble. Use what works, I always say.
            Cliff

            Coffee tastes better if the latrines are dug downstream from an encampment.
            - US Army Field Regulations, 1861

            Comment


            • #7
              Re: Cannot copy previous field....

              Originally posted by G Gabriel View Post
              I haven't tried it, but try to activate the field first, i.e.:
              object_with_field.activate()
              topparent.copy_previous_field()
              That's exactly how I did it. I even changed fields. Gave focus to a field and presed the button. No go.

              kenn
              TYVM :) kenn

              Knowing what you can achieve will not become reality until you imagine and explore.

              Comment


              • #8
                Re: Cannot copy previous field....

                Originally posted by Garry Flanigan View Post
                I ran a test creating a simple table and form, added a record, put on a button and inserted code:
                topparent.copy_prev_record()
                I then went into "Enter new record" mode, pushed the button and voila, it worked!
                However, if I sit on an existing record and press the button it errors with:
                "Cannot copy previous record. You must be in enter mode"
                I cannot generate your error so if you give us a stripped down sample maybe we can see assist further.
                Garry
                You are trying to copy the previous record rather than the previous field.
                TYVM :) kenn

                Knowing what you can achieve will not become reality until you imagine and explore.

                Comment


                • #9
                  Re: Cannot copy previous field....

                  Originally posted by Stan Mathews View Post
                  Perhaps the usage should be triggered by an onkey event?
                  I thought of that but haven't had time to give it a try. Maybe tonight??

                  kenn
                  TYVM :) kenn

                  Knowing what you can achieve will not become reality until you imagine and explore.

                  Comment


                  • #10
                    Re: Cannot copy previous field....

                    Originally posted by cwenger View Post
                    However, from the help file for <OBJECT>.COPY_PREV_FIELD:
                    But, I quibble. Use what works, I always say.
                    Should be reported as a documentation error for correction in the next update. Please do.
                    There can be only one.

                    Comment


                    • #11
                      Re: Cannot copy previous field....

                      This is a bug and it is not the ant-type bug, it's most likely the tarantula type. A tip of an iceberg bug.

                      Wish I had more time to investigate, but on quick investigation it looks like when you click the new record icon or try to enter a new record by some other means, the form goes in View or, under other circumstances I've yet to explore, change mode but not on enter mode. Weird and hard to believe that this eluded everyone all this time. Maybe I am wrong. Wish others test to confirm.
                      Do this:
                      On your form put a button with this script:
                      Code:
                      topparent.new_record()
                      x=topparent.mode_get()
                      msgbox(x)
                      See what you get.
                      Tested on some other forms, got the correct expected response: Enter mode.
                      I've got to get to the bottom of this, why in some forms you get View mode while on others you get Enter mode? If I have the time, I will investigate further..
                      Last edited by G Gabriel; 09-22-2009, 04:10 PM.

                      Comment


                      • #12
                        Re: Cannot copy previous field....

                        Stan, I reported it as a bug with a sample database and the steps to create the error and the steps to use onkey.

                        Gabe, I tried your test. The button puts the form into enter mode and pops up a dialog box that says "Enter" and an "OK" button.
                        Cliff

                        Coffee tastes better if the latrines are dug downstream from an encampment.
                        - US Army Field Regulations, 1861

                        Comment


                        • #13
                          Re: Cannot copy previous field....

                          Ok.. a little bit of a progress here:
                          If your form has an embedded browse, you get the wrong mode. Remove the embedded browse, you get the correct mode. But, it won't copy the previous field in either case so there is more to it than just the mode.

                          Comment


                          • #14
                            Re: Cannot copy previous field....

                            Garry,

                            I ran a test creating a simple table and form, added a record, put on a button and inserted code:
                            topparent.copy_prev_record()
                            I then went into "Enter new record" mode, pushed the button and voila, it worked!
                            How did it(Copy_Prev_record()) work?
                            I have as
                            'Copy previous record in current form at Browse8 level.
                            topparent:Browse8.copy_prev_record(1)
                            'Enter new record in current form at Browse8 level.
                            topparent:Browse8.new_record()

                            Comment


                            • #15
                              Re: Cannot copy previous field....

                              My reply was 18 months ago!! At my age it's hard to remember what I did a week ago.
                              My test was one a form based on one table and not on a browse so I suggest you just experiment.
                              Sorry that I cannot be of more assistance.

                              Comment

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