Question: How do I move (or reorder) tabsheet pages in a page control object?
Answer: Change the tabsheet's PageIndex property to the position matching the new location, as shown in the following walkthrough:
Create a new Delphi application.
Select the Win32 tab in the Component Palette and then place a PageControl object on your default form.
Right-click the page control object and then choose New Page from the shortcut menu.
Repeat Step 3 two more times. When finished, your form should look similar to the following figure:
Make sure that Tabsheet3 is the selected object in the Object Inspector.
In the Object Inspector, change the PageIndex property to 1 and notice that the page moves to the new position, as shown in the following figure:
As with other collection properties in Delphi, PageIndex is a zero-based value. To move your third tabsheet to the second page position, change PageIndex from 2 to 1. If you're doing this while designing your form, remember to select the tabsheet you wish to move before changing PageIndex.