Go4Expert - image in picture control not displayed properly after moving

Go4Expert (http://www.go4expert.com/)

- MFC (http://www.go4expert.com/forumdisplay.php?f=53)

- - image in picture control not displayed properly after moving (http://www.go4expert.com/showthread.php?t=17743)

image in picture control not displayed properly after moving

Hello, I'm writing a MFC application to move a picture control when i press the "Next" button. (Please see attached screen-captures)

There is a dialog box on which there are 2 picture controls. When I press the Next button, the left picture control should move on top of the right picture control.
You can see I kept the code for moving the picture control in a for loop because I wanted a sort of animation effect.

As you can see from the attachments, after I move the image there are some vertical lines appearing. How do I make them go away?

Thank you.

Code:

void CShabbirDlg::OnBnClickedButton2()

{

    // TODO: Add your control notification handler code here

    if (pageNum <= 10) {

        pageNum++;



        CRect RRect, LRect;



        //Get the coordinates of the right and left picture control

                picPreview2.GetWindowRect(&RRect);

        picPreview.GetWindowRect(&LRect);



        //Move the left picture control to the right

        for (long int i = LRect.left; i > RRect.left; i -= 20) {

            picPreview.MoveWindow(i , LRect.top, LRect.Width(), LRect.Height());

        }

    }

    



}

Re: image in picture control not displayed properly after moving

Try updating the window after the move :

Code: c++

void CShabbirDlg::OnBnClickedButton2()
{
      // TODO: Add your control notification handler code here
      if (pageNum <= 10) {
            pageNum++;
            CRect RRect, LRect;

            //Get the coordinates of the right and left picture control
            picPreview2.GetWindowRect(&RRect);
            picPreview.GetWindowRect(&LRect);

            //Move the left picture control to the right
            for (long int i = LRect.left; i > RRect.left; i -= 20) {
                  picPreview.MoveWindow(i , LRect.top, LRect.Width(), LRect.Height());
            }
            this->Invalidate();
      }
}