Re: Undesirable scrolling effects

Author

Message

Sergey Tkachenko

Posted: 11/07/2002 18:52:53

Try to turn off vertical scrollbar (VScrollVisible = False)

> Hi,

> I have 2 problems with V-scrolling :

> Note: My TRichTextEdit is part of a larger text form, for which I need a

> global scrolling area. For this reason I do not use the RT built-in scroll

> mechanisms (I use an external Delphi TScrollBox, and the height of the RT

> component is dynamically maintained by an OnChange trigger).

> 1/ The 1st undesirable effect is the following : when I click somewhere in

> the RT component, in most cases this causes an instant scrolling that

brings

> the top of the RT on top of the TScrollBox. In addition, this scrolling is

> made while the mouse button is pressed (even though I try to release it as

> fast as possible ...), and the result is a large "selection" instead of a

> single insert point. Then I have to click again within this selection to

get

> the caret at the desired position. Sometimes I even need to scroll

manually

> before this, to get the desired target point visible again.

> I am afraid that things could be even worse when using tables with large

> cells, or large embedded objects, exceeding the height of the visible

> area...

> 2/ The second problem is that there is no automatic V-scrolling when I

move

> the cursor (with up/down arrows) to a non-visible part of the RT. I should

> probably implement a programmatic scrolling of my TScrollBox to correct

this

> but it is somewhat complicated, and I am also afraid that this could

> interfere with the previous problem.

> Do you have any suggestion ? Should I give-up with external scrolling and

> integrate my whole text form in a single RT component (which would be a

> significant and costly change in my architecture ...) ?

> Best regards,

> ML