Image rotation doesn't take effect till...

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  • kimiraikkonen
    #1

    Image rotation doesn't take effect till...

    Hi,
    Here is a very interesting issue,
    Assume i have picturebox and loaded a image into picturebox, however
    whenever i want to rotate image using:

    'For example 90 degree
    PictureBox1.Ima ge.RotateFlip(R otateFlipType.R otate90FlipX)

    This rotation takes effect on picturebox after i minimize - remaximize
    form OR after i drag form somewhere outside the screen the re-bring to
    a visible location on the screen.

    If i don't drag form somewhere outside the screen OR minimize then re-
    bring to normal window position.

    Is this a bug or how can i overcome this?

    Thanks a lot!
    Tags: None
    • Michael D. Ober
      #2
      Re: Image rotation doesn't take effect till...

      "kimiraikko nen" <kimiraikkonen8 5@gmail.comwrot e in message
      news:70ea9cfc-ec84-46fd-88ce-95b94de4e6cb@e2 3g2000prf.googl egroups.com...
      Hi,
      Here is a very interesting issue,
      Assume i have picturebox and loaded a image into picturebox, however
      whenever i want to rotate image using:
      >
      'For example 90 degree
      PictureBox1.Ima ge.RotateFlip(R otateFlipType.R otate90FlipX)
      >
      This rotation takes effect on picturebox after i minimize - remaximize
      form OR after i drag form somewhere outside the screen the re-bring to
      a visible location on the screen.
      >
      If i don't drag form somewhere outside the screen OR minimize then re-
      bring to normal window position.
      >
      Is this a bug or how can i overcome this?
      >
      Thanks a lot!
      >
      Have you tried a form Refresh() or picturebox Refresh() after the rotation?

      Mike Ober.


        Comment

        • kimiraikkonen
          #3
          Re: Image rotation doesn't take effect till...

          On Dec 24, 11:25 pm, kimiraikkonen <kimiraikkone.. .@gmail.comwrot e:
          Hi,
          Here is a very interesting issue,
          Assume i have picturebox and loaded a image into picturebox, however
          whenever i want to rotate image using:
          >
          'For example 90 degree
          PictureBox1.Ima ge.RotateFlip(R otateFlipType.R otate90FlipX)
          >
          This rotation takes effect on picturebox after i minimize - remaximize
          form OR after i drag form somewhere outside the screen the re-bring to
          a visible location on the screen.
          >
          If i don't drag form somewhere outside the screen OR minimize then re-
          bring to normal window position.
          >
          Is this a bug or how can i overcome this?
          >
          Thanks a lot!
          However this a kind of indirect solution which corrects this but still
          i want to know why i need to adjust visibility propery of picturebox.

          PictureBox1.Ima ge.RotateFlip(R otateFlipType.R otate90FlipX)
          PictureBox1.Vis ible = False
          PictureBox1.Vis ible = True

          Another issue, as i stated in a post with no reply, while dragging
          picturebox the image and form gets a very slow performance and jittery
          tearing effects occur on screen. There's no such problem on 3rd party
          softwares like XnView using on same system.

          Thanks.

            Comment

            • kimiraikkonen
              #4
              Re: Image rotation doesn't take effect till...

              On Dec 24, 11:30 pm, "Michael D. Ober" <obermd.@.alum. mit.edu.nospam. >
              wrote:
              "kimiraikko nen" <kimiraikkone.. .@gmail.comwrot e in message
              >
              news:70ea9cfc-ec84-46fd-88ce-95b94de4e6cb@e2 3g2000prf.googl egroups.com...
              >
              >
              >
              Hi,
              Here is a very interesting issue,
              Assume i have picturebox and loaded a image into picturebox, however
              whenever i want to rotate image using:
              >
              'For example 90 degree
              PictureBox1.Ima ge.RotateFlip(R otateFlipType.R otate90FlipX)
              >
              This rotation takes effect on picturebox after i minimize - remaximize
              form OR after i drag form somewhere outside the screen the re-bring to
              a visible location on the screen.
              >
              If i don't drag form somewhere outside the screen OR minimize then re-
              bring to normal window position.
              >
              Is this a bug or how can i overcome this?
              >
              Thanks a lot!
              >
              Have you tried a form Refresh() or picturebox Refresh() after the rotation?
              >
              Mike Ober.
              Hi! Thank you, refresh function does it without needing to refresh
              picturebox using visible property to false / true :-)

                Comment

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