On 30 Srp, 19:10, ClayB <cl...@syncfusion.com> wrote:
> Here is something you might be able to use to work around the problem.
> Before trying to access the size of the picturebox, explicitly set its
> tabpage to be the size of the selectedtab.
>
> //tabPage2 holds the pictureBox
> tabPage2.Size = tabControl1.SelectedTab.Size;
> Size size = pictureBox1.Size;
>
> ============================
> Clay Burch
> Syncfusion, Inc.

nvx wrote:
> Hello,
> I experience a strange problem with PictureBox I draw onto. My
> application has a fill-docked TabControl on its form and there is
> PictureBox on one of the TabPages. If I resize the form (hence the
> PictureBox should resize too) WITHOUT switching to the TabPage
> containing the PictureBox before drawing onto it, the PictureBox does
> not change its dimensions and the Bitmap of the size of PictureBox I
> create before drawing has wrong dimensions as well. After switching to
> the TabPage containing the PictureBox the image drawn before just
> stretches/shrinks depending on whether I have enlarged or made the
> form smaller.
>
> An example:
> 1. At this point the PictureBox is 800x600 pixels and is placed on a
> TabPage which is not selected.
> 2. We resize the form (maximize it) and the PictureBox should now be
> approx. 1000x720 pixels.
> 3. Now we draw something onto the PictureBox: we take its dimensions,
> which are according to PB's properties STILL 800x600 (!!!), create a
> Bitmap and draw what we want. After that we flush the bitmap onto the
> graphics using graphics.DrawImageUnscaled(...). IT IS CLEAR THAT THE
> IMAGE WE HAVE DRAWN HAS WRONG DIMENSIONS, BUT HOW TO ENSURE THE
> PICTUREBOX CHANGES ITS DIMENSIONS EVEN IF IT IS NOT VISIBLE?
> 4. After selecting the TabPage with PictureBox the image is
> stretched...
>
>
> Well, is there a way to "invoke" the Resize of PictureBox / to force
> it to correct its dimensions according to dimensions of its parent
> control and current dock style?
>
> Thanks a lot for any help...
>
> Best regards
> nvx