Hi Sergey,

That did the trick. I had a hunch that it was related to it, but when I saw that all the other checkboxes in the page had autosize=.t. and weren't the jumping type, I ran out of ideas.

Thank you!!!!

Alex


>Alex,
>
>Check Autosize property. It should be .F. for right-aligned checkbox to avoid such movement.
>
>>
>>I'm stumped by this really weird control behavior.
>>
>>This is under MereMortals version 6.12.
>>
>>I have a form with a pageframe. The pageframe has 4 pages.
>>
>>Page 1 has a grid with a list of employees.
>>Page 2 shows personal information for the employee selected in tab1.
>>Page 3 shows employment info.
>>Page 4 shows hours worked by the employee.
>>
>>Everything's working nicely and I hadn't touched this form in a few months.
>>
>>Today I added a new checkbox to page 3.
>>
>>I open the form, select an employee in page 1, then click on the tab for Page 3. No problem.
>>
>>When I click again on the SAME tab, the checkbox jumps about 100 pixels to the right.
>>
>>In case it helps, the checkbox is set as right-aligned, .left=155.
>>
>>I suspended the program and using sys(1260) got a reference to the checkbox and regardless of whether it hasn't jumped or jumped already, its .left property stays at 155.
>>