How to vertically scroll to the bottom of a TWebScrollBox?

Question

I have a TWebScrollBox component on my form in a TMS WEB Core project.

I'm able to vertically scroll from Delphi programming code to various locations in the scrollbox using the ScrollTop property on it.

So if I want to scroll to the top of the scrollbox, I can do the following:

WebScrollBox1.ScrollTop := 0;

But how can I scroll to the bottom of the scrollbox?

I tried getting the height of the scrollbox using various different properties such as Height, ClientHeight, ExplicitHeight, etc. However, I wasn't able to get the actual height of the content in the scrollbox.

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I managed to fake it for now by using Integer.MaxValue like this:

WebScrollBox1.ScrollTop := Integer.MaxValue;

But obviously, that isn't the correct solution, because you're not setting it to the actual content height. Although unlikely, but possible: the content height could also be longer than Integer.MaxValue.

What is the correct way to scroll to the actual bottom of the TWebScrollBox component?

Answer 1

I eventually discovered that you can do this using the VertScrollBar.Range property like this:

WebScrollBox1.ScrollTop := WebScrollBox1.VertScrollBar.Range;

This gets the actual height of the content in the TWebScrollBox and sets the scrollbar to that causing it to scroll to the bottom.