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onkey event for form

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    #1

    onkey event for form

    Not sure if I forgot my sugar medicine but this is beating me crazy. Thanks in advance!
    on a form:
    catch the onkey for ctrl and v combination and halt it.

    I have tried every variant I can find for on_key and none even came close.
    Searched the forum as well with no joy.

    Just need it to stop the ctrl+v from happening and a ui_message box.
    Dave Mason
    [email protected]
    Skype is dave.mason46
    Tags: None
    #2
    Re: onkey event for form

    IF (a_user.key.value = ui_keycode_normalize("{Ctrl-V}") ) THEN
    'set a_user.key.handled = .t. to prevent the key stroke being passed on to the Form
    a_user.key.handled = .t.
    IF a_user.key.event = "down" THEN
    ui_msg_box("","User pressed CTRL")
    END IF
    END IF
    There can be only one.

    Comment

      #3
      Re: onkey event for form

      Thanks Stan

      Gets error:

      Script:OnInit line:9
      IF (a_user.key.value = ui_keycode_normalize("{Ctrl-V}") ) THEN

      Not found
      a_user not found.

      Same problem I was having

      Where does the "a_user.key.vakue" come from?
      Dave Mason
      [email protected]
      Skype is dave.mason46

      Comment

        #4
        Re: onkey event for form

        Why not create an event for the Crt+V like close the window, that will stop people, lol.
        NWCOPRO: Nuisance Wildlife Control Software My Application: http://www.nwcopro.com "Without forgetting, we would have no memory at all...now what was I saying?"

        Comment

          #5
          Re: onkey event for form

          Hi Charles,

          It is for a client and I can't do that.

          I just wish it to stop the pasting and pop up a message box.
          Dave Mason
          [email protected]
          Skype is dave.mason46

          Comment

            #6
            Re: onkey event for form

            well, it's an idea. Perhaps the event can trigger a msg box - and perhaps reset the form? that would stop users from doing that...I get that you need to be professional but you need to stop them too!
            NWCOPRO: Nuisance Wildlife Control Software My Application: http://www.nwcopro.com "Without forgetting, we would have no memory at all...now what was I saying?"

            Comment

              #7
              Re: onkey event for form

              Code:
              'Date Created: 22-Jul-2015 07:02:22 AM
'Last Updated: 22-Jul-2015 07:02:22 AM
'Created By  : GGandhi344
'Updated By  : GGandhi344
IF a_user.key.value = "{^v}" THEN
    a_user.key.handled = .t.
    IF a_user.key.event = "down" THEN
        ui_msg_box("","user pressed control v")
    END IF
END IF
              I just tested this and the message box pops up every time, you can of course modify to be nothing.
              try and take a look.
              as far as a_user.key that is what windows gets before passing on to the form, as per documentation.
              thanks for reading

              gandhi

              version 11 3381 - 4096
              mysql backend
              http://www.alphawebprogramming.blogspot.com
              [email protected]
              Skype:[email protected]
              1 914 924 5171

              Comment

                #8
                Re: onkey event for form

                Worked when I tested it last night in V11, may be different in V12.

                Originally posted by DaveM View Post
                Thanks Stan

                Gets error:

                Script:OnInit line:9
                IF (a_user.key.value = ui_keycode_normalize("{Ctrl-V}") ) THEN

                Not found
                a_user not found.

                Same problem I was having

                Where does the "a_user.key.vakue" come from?
                A_USER P
                Provides information about the current window and keyboard. See Object Events.
                http://wiki.alphasoftware.com/System+Variables
                Last edited by Stan Mathews; July 22, 2015, 09:28 AM.
                There can be only one.

                Comment

                  #9
                  Re: onkey event for form

                  This just one of a bunch of variations tried.

                  Code:
                  dim a_user as P
a_user = "" ' a_user.key.value = "^v"  and others

IF a_user.key.value = "{^v}" THEN
    a_user.key.handled = .t.
    IF a_user.key.event = "down" THEN
        ui_msg_box("","user pressed control v")
    END IF
END IF
                  with every press of ctrl+v the paste is done in the form
                  Nothing seems to stop it.
                  Yes, I am on the latest version of windows 8.1 and alpha v12. - Maybe that is the problem?
                  Dave Mason
                  [email protected]
                  Skype is dave.mason46

                  Comment

                    #10
                    Re: onkey event for form

                    dim a_user as P
                    a_user = "" ' a_user.key.value = "^v" and others
                    No, probably causing the problem. A_user is an Alpha system variable. You don't/shouldn't dim it in your script.
                    There can be only one.

                    Comment

                      #11
                      Re: onkey event for form

                      On a fresh restart?

                      ?a_user
                      ERROR: Variable "a_user" not found.

                      ?a_user.key
                      ERROR: Not found
                      a_user not found.
                      Dave Mason
                      [email protected]
                      Skype is dave.mason46

                      Comment

                        #12
                        Re: onkey event for form

                        Are you trying the code in an onkey event? It will not work in the interactive. It is meaningless in the interactive.
                        There can be only one.

                        Comment

                          #13
                          Re: onkey event for form

                          Originally posted by DaveM View Post
                          On a fresh restart?

                          ?a_user
                          ERROR: Variable "a_user" not found.

                          ?a_user.key
                          ERROR: Not found
                          a_user not found.
                          OnKey


                          Whenever a key is pressed while the form has focus. Variables set:

                          A_USER.KEY.VALUE contains the key (key is same format that is used by SYS_SEND_KEYS() i.e. A is the character A, {F1} is the F1 key.

                          A_USER.KEY.EVENT is either up or down or repeat depending whether the key is being pushed, held down or released.

                          A_USER.KEY.HANDLED is set to .T. if the key was handled by the OnKey event. If you set this variable to .T., then the keystroke is not passed through to Alpha Five (i.e. it is eaten by the OnKey script).

                          For example, the following OnKey script will close Alpha Five when the user presses Alt-X:

                          If (A_USER.KEY.VALUE = "{%X}") then

                          If (A_USER.KEY.EVENT = "down") then

                          :a5.close()

                          End if

                          End if

                          TIP : To see how Alpha Five represents different key combinations, define the following OnKey script for a form, then open the trace window and try out different key combinations:

                          trace.writeln("key: " + A_USER.KEY.VALUE + " event: " + A_USER.KEY.EVENT)
                          Al Buchholz
                          Bookwood Systems, LTD
                          Weekly QReportBuilder Webinars Thursday 1 pm CST

                          Occam's Razor - KISS
                          Normalize till it hurts - De-normalize till it works.
                          Advice offered and questions asked in the spirit of learning how to fish is better than someone giving you a fish.
                          When we triage a problem it is much easier to read sample systems than to read a mind.
                          "Make it as simple as possible, but not simpler."
                          Albert Einstein

                          http://www.iadn.com/images/media/iadn_member.png

                          Comment

                            #14
                            Re: onkey event for form

                            Onkey event code.

                            debug(1)
                            IF a_user.key.value = "{^v}" THEN
                            a_user.key.handled = .t.
                            IF a_user.key.event = "down" THEN
                            ui_msg_box("","user pressed control v")
                            END IF
                            END IF

                            Then examine a_user.key.value in the expression....value area at the bottom of the debugger window.
                            Last edited by Stan Mathews; July 22, 2015, 04:48 PM.
                            There can be only one.

                            Comment

                              #15
                              Re: onkey event for form

                              Originally posted by Stan Mathews View Post
                              Are you trying the code in an onkey event? It will not work in the interactive. It is meaningless in the interactive.
                              I did not know that.
                              Dave Mason
                              [email protected]
                              Skype is dave.mason46

                              Comment

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