Question

How to use API to automatically scroll to max vertical scrollbar value

Asked by: SeeOne

Hey all, been getting a lot of useful information from this forum and was wondering if I could get some help with something specific...

I am currently programming a small chat server/client in VB and am using a Richtext for the main text viewer.  I've been using a lot of API to make it more functional, but I am unable to solve this one problem.  The richtext automatically expands to fit the form on Form_Resize, but the problem is, the text inside the box doesn't drop to the bottom when the control is resized - It remains in it's current position.

I was wondering how it would be possible to get the richtext to automatically scroll the text to the bottom of the control, when it gets bigger or smaller?  

I have found some quick solutions including using SelStart on resize, but it is ineffective when the maximize button is pushed, and causes a lot of flicker.

Any help would be greatly appreciated on this one.

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Asked On
2002-10-25 at 21:14:33ID20382663
Tags

form_resize

Topic

Visual Basic Programming

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Answers

 

by: jackblackPosted on 2002-10-26 at 03:30:28ID: 7372221

Not quite sure what your asking, but you can use the lockwindow api to stop the flickering and if you want to scroll to the end of the text within the control, then use SelStart.

If you're having problems when the maximize button is pushed, you could subclass the form and trap the resize message.

Latz
jp

 

by: SeeOnePosted on 2002-10-26 at 10:21:22ID: 7372887

Ok, sorry if I was a little unclear.  The problem is, when the textbox contol is resized on the form, the location of the text inside remains the same.

Let me give you an example.  Lets say I started dragging from tbe bottom right corner, and all of my controls have been programmed to move with form as it enlarges.  The textbox does this, but the last line in the text inside remains in it's current position.  This causes a huge space in between the bottom of the textbox and the last line of text, and that space varies depending on what the form was expanded too.

What I want to do, is make that text move up or down as it may be, to the bottom of the richtext at all times, so there is no space, unless there isn't enough text to make it to the bottom of a specific size.

Again, I appreciate all input.

 

by: SeeOnePosted on 2002-10-26 at 10:42:37ID: 7372936

One more quick thing, I have tried using SelStart, it works when scrolling up into text, but when scrolling down, it doesn't cause the text to go the bottom of the larger size textbox.

 

by: twalgravePosted on 2002-10-27 at 10:56:24ID: 7375467

It ain't pretty, but it is simple.  After each resize of the control,you should issue a SendKeys with a Ctrl-Home combination, then a SendKeys with a Ctrl-End combination.  However, you will need to first keep and then restore your cursor position.  The Ctrl-End will send you to the bottom without white space, then you can back up to your position.

        SendKeys ("^{HOME}")
        SendKeys ("^{END}")

 

by: SeeOnePosted on 2002-10-27 at 12:01:17ID: 7375636

Thanks but still no luck.  What it does is it goes to the end of the last line of text, as opposed to the end of the textbox, and the space still remains.

 

by: rdrunnerPosted on 2002-10-27 at 14:22:34ID: 7375964

Try

RichTextBox1.SelStart = 0
RichTextBox1.SelStart = Len(RichTextBox1.Text)


Hope this works like desired....

 

by: twalgravePosted on 2002-11-15 at 14:06:21ID: 7455418

SeeOne,
Please maintain this question.  If you don't have a satisfactory answer, ask to withdraw the question and have your points reassigned.  If you have a good answer, please accept it.

 

by: SeeOnePosted on 2002-11-25 at 13:44:36ID: 7495938

I had this answered awhile ago in a second question I asked.

If possible I would like to have this one withdrawed.

 

by: twalgravePosted on 2002-11-25 at 13:54:25ID: 7495984

To have a question withdrawn, post a new zero point question in the community support area titled please delete and in the message body copy the URL address for this message.  The moderators will then decide what to do.

 

by: Computer101Posted on 2002-11-26 at 18:15:16ID: 7501320

Points refunded and placed in PAQ

Computer101
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