Deriving Combobox items indexes

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  • Easton
    #1

    Deriving Combobox items indexes

    To anyone who might be able to help.

    I'm trying to derive the index of any random item in a populated combobox
    dropdownlist when the mousepointer is over the item. Seems to me it should
    be possible since the item "highlights " when the mouse passes over the
    different items listed, but the end user hasn't yet "clicked/selected" any
    specific item. I know it can be done with a listbox. Basically looking for
    the LB_ITEMFROMPOIN T equivalent for Comboboxes. Does anyone have any idea
    how to accomplish this with a combobox? Please help.
    Tags: None
    • Cor Ligthert [MVP]
      #2
      Re: Deriving Combobox items indexes

      Easton,

      Any reason that you want to do this, it sound for me forever stupid that
      people want to confrontate users with non standard behaviour. Something from
      the 80's in the previous century.

      Cor

      "Easton" <Easton@discuss ions.microsoft. comschreef in bericht
      news:5254EA53-028F-4A16-BD71-F925C4168C1D@mi crosoft.com...
      To anyone who might be able to help.
      >
      I'm trying to derive the index of any random item in a populated combobox
      dropdownlist when the mousepointer is over the item. Seems to me it
      should
      be possible since the item "highlights " when the mouse passes over the
      different items listed, but the end user hasn't yet "clicked/selected" any
      specific item. I know it can be done with a listbox. Basically looking
      for
      the LB_ITEMFROMPOIN T equivalent for Comboboxes. Does anyone have any
      idea
      how to accomplish this with a combobox? Please help.

        Comment

        • Phill W.
          #3
          Re: Deriving Combobox items indexes

          Easton wrote:
          I'm trying to derive the index of any random item in a populated combobox
          dropdownlist when the mousepointer is over the item. Seems to me it should
          be possible since the item "highlights " when the mouse passes over the
          different items listed, but the end user hasn't yet "clicked/selected" any
          specific item.
          If you create a Control derived from ComboBox, make it OwnerDrawn and
          override the DrawItem method, you should be able to pick out the
          currently "hovered" item based on each item's style. (IIRC, the item's
          index is passed as part of the Event Arguments).

          Not something to take on lightly, but it you /really want to...

          Regards,
          Phill W.

            Comment

            • Easton
              #4
              Re: Deriving Combobox items indexes

              Yes, my application would use the index to derive a preview of information to
              help the end user make the best possible choice from the combobox.

              "Cor Ligthert [MVP]" wrote:
              Easton,
              >
              Any reason that you want to do this, it sound for me forever stupid that
              people want to confrontate users with non standard behaviour. Something from
              the 80's in the previous century.
              >
              Cor
              >
              "Easton" <Easton@discuss ions.microsoft. comschreef in bericht
              news:5254EA53-028F-4A16-BD71-F925C4168C1D@mi crosoft.com...
              To anyone who might be able to help.

              I'm trying to derive the index of any random item in a populated combobox
              dropdownlist when the mousepointer is over the item. Seems to me it
              should
              be possible since the item "highlights " when the mouse passes over the
              different items listed, but the end user hasn't yet "clicked/selected" any
              specific item. I know it can be done with a listbox. Basically looking
              for
              the LB_ITEMFROMPOIN T equivalent for Comboboxes. Does anyone have any
              idea
              how to accomplish this with a combobox? Please help.
              >
              >
              >

                Comment

                • Easton
                  #5
                  Re: Deriving Combobox items indexes

                  Thank you Phill, I've been headed in that direction as well. Would you
                  happend to know what event I should be watching?

                  "Phill W." wrote:
                  Easton wrote:
                  >
                  I'm trying to derive the index of any random item in a populated combobox
                  dropdownlist when the mousepointer is over the item. Seems to me it should
                  be possible since the item "highlights " when the mouse passes over the
                  different items listed, but the end user hasn't yet "clicked/selected" any
                  specific item.
                  >
                  If you create a Control derived from ComboBox, make it OwnerDrawn and
                  override the DrawItem method, you should be able to pick out the
                  currently "hovered" item based on each item's style. (IIRC, the item's
                  index is passed as part of the Event Arguments).
                  >
                  Not something to take on lightly, but it you /really want to...
                  >
                  Regards,
                  Phill W.
                  >

                    Comment

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