forum.vdsworld.com Forum Index forum.vdsworld.com
Visit VDSWORLD.com
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 


Scrollbar position checking?
Goto page 1, 2  Next
 
Post new topic   Reply to topic    forum.vdsworld.com Forum Index -> Advanced Help for VDS 5 & Up
View previous topic :: View next topic  
Author Message
Aslan
Valued Contributor
Valued Contributor


Joined: 31 May 2001
Posts: 589
Location: Memphis, TN USA

PostPosted: Mon Feb 13, 2006 1:51 am    Post subject: Scrollbar position checking? Reply with quote

Many of you have probably seen license agreement dialogs where the "Accept Button" dosen't activate until the the user scrolls to the bottom of the license agreemnent. I would like to have this functionallity in some of my apps.

I'm sure there is probably more than one way to do this, but hoping someone knows an easy way.

Thanks in advance,

Aslan
Back to top
View user's profile Send private message Send e-mail
SnarlingSheep
Professional Member
Professional Member


Joined: 13 Mar 2001
Posts: 759
Location: Michigan

PostPosted: Mon Feb 13, 2006 4:38 am    Post subject: Reply with quote

You can probably use EM_GETTHUMB.
Code:
%P = @sendmsg(@win(~EDIT1),$0BE,0,0)

You'll have to test it to see what result you actually want. It will return the current position of the scroll box of your edit control.

After you find what value you are looking for(probably something like 100), you can use a timer to check it every half-second or so, if %P equals the value you want, enable the Accept button.

_________________
-Sheep
My pockets hurt...
Back to top
View user's profile Send private message Send e-mail
Aslan
Valued Contributor
Valued Contributor


Joined: 31 May 2001
Posts: 589
Location: Memphis, TN USA

PostPosted: Mon Feb 13, 2006 2:47 pm    Post subject: Reply with quote

Will this work with a list element?
Back to top
View user's profile Send private message Send e-mail
Aslan
Valued Contributor
Valued Contributor


Joined: 31 May 2001
Posts: 589
Location: Memphis, TN USA

PostPosted: Mon Feb 13, 2006 3:24 pm    Post subject: Reply with quote

Using the following code %P always equals "0"

To test you'll need to create upgrade.txt with enough lines to cause the scrollbar to be needed.

Code:
Title Comm Setup
  DIALOG CREATE,Comm Setup,-1,0,546,220,NOSYS
  DIALOG ADD,STYLE,STYLE2,,8,BL
  DIALOG ADD,STYLE,STYLE1,,,BC,BLACK,F29A15
  DIALOG ADD,BUTTON,OK,185,469,64,24,INSTALL
  DIALOG ADD,EDIT,EDIT1,12,195,338,160,,,MULTI,WRAP,SCROLL,STYLE2
  DIALOG ADD,LINE,LINE1,11,14,167,197
  DIALOG SHOW

   List create,1
   List Loadfile,1,upgrade.txt
   Dialog set,EDIT1,@text(1)
 
:Evloop
 Repeat
 %P = @sendmsg(@winexists(~EDIT1),$0BE,0,0)
 If @greater(%P,0)
  Info %P
 End
  wait 0.5
  %E = @event()
  If %E
   goto %E
  End
 Until %E
 
:OKBUTTON
   #Do something
   
 :Close
  exit
Back to top
View user's profile Send private message Send e-mail
SnarlingSheep
Professional Member
Professional Member


Joined: 13 Mar 2001
Posts: 759
Location: Michigan

PostPosted: Mon Feb 13, 2006 3:25 pm    Post subject: Reply with quote

No that's for edit/richedit only, you can use LB_GETTOPINDEX for listboxes.
It returns the visible item at the top of the listbox, which is 0 before the listbox is scrolled, and an item toward the bottom if the user scrolls to the bottom.
Code:
%P = @sendmsg(@win(~LIST1),$018E,0,0)

So if your list has 100 items, and you can see 20 at a time or so, then you'd want to enable the Accept button if the above returns > 78.

_________________
-Sheep
My pockets hurt...
Back to top
View user's profile Send private message Send e-mail
Aslan
Valued Contributor
Valued Contributor


Joined: 31 May 2001
Posts: 589
Location: Memphis, TN USA

PostPosted: Mon Feb 13, 2006 3:44 pm    Post subject: Reply with quote

Hey SS again thanks for your help.

In the post above your last one I used a multi/edit.

Can you see anything wrong with the code?

%P = 0 no matter where the scroll thumb is.
Back to top
View user's profile Send private message Send e-mail
SnarlingSheep
Professional Member
Professional Member


Joined: 13 Mar 2001
Posts: 759
Location: Michigan

PostPosted: Mon Feb 13, 2006 4:18 pm    Post subject: Reply with quote

It's probably more effecient to use a timer event, but it should still work.
For some reason the built in @sendmsg apparently doesn't work with all messages. If you have VDS 5, you should try it with the API SendMessage function.

Code:

LOADLIB user32.dll
%%hwnd = @strdel(@winexists(~EDIT1),1,1)
%P = @lib(user32,SendMessageA,INT:,%%hwnd,$0BE,0,0)

_________________
-Sheep
My pockets hurt...
Back to top
View user's profile Send private message Send e-mail
SnarlingSheep
Professional Member
Professional Member


Joined: 13 Mar 2001
Posts: 759
Location: Michigan

PostPosted: Mon Feb 13, 2006 4:43 pm    Post subject: Reply with quote

The edit thumb position must not work with a VDS editbox.
LB_GETTOPINDEX does work though.

This will work with any text file, as it calculates what item should be at the top, if the user scrolls to the bottom.
Don't forget to change %%file to your license file.
Code:

%%file = c:\Mp3-List.txt
REM The height of your listbox, used to see how many items are visible
%%LBHeight = 170
  DIALOG CREATE,New Dialog,-1,0,316,214
REM *** Modified by Dialog Designer on 2/13/2006 - 11:19 ***
  DIALOG ADD,LIST,LIST1,14,22,274,%%LBHeight
  DIALOG ADD,BUTTON,Accept,190,110,80,22,Accept
  DIALOG SHOW
 
  DIALOG DISABLE,Accept 
  list loadfile,LIST1,%%file
:Timer
  %P = @sendmsg(@winexists(~LIST1),$018E,0,0)
  REM Get the height of an item in pixels.
  %O = @sendmsg(@winexists(~LIST1),$01A1,0,0)
  REM Subtract 2 from LBHeight and divide by the height of an item.
  REM This gives you the amount of items visible.
  %%visibleItems = @format(@fdiv(@fsub(%%LBHeight,2),%O),.0)
  REM Then subtract that from the actual amount of items in the listbox.
  %O = @sendmsg(@winexists(~LIST1),$018B,0,0)
  REM Subract 1, just in case.
  %%lowestItem = @fsub(@fsub(%O,%%visibleItems),1)
  REM This gives you the item to look for, to make sure the user scrolled to the bottom.
  if @greater(%P,%%lowestItem)
    dialog enable,Accept
  end
:Evloop
  wait event,0.5
  goto @event()
:AcceptBUTTON
:Close
  exit

_________________
-Sheep
My pockets hurt...
Back to top
View user's profile Send private message Send e-mail
Aslan
Valued Contributor
Valued Contributor


Joined: 31 May 2001
Posts: 589
Location: Memphis, TN USA

PostPosted: Mon Feb 13, 2006 4:50 pm    Post subject: Reply with quote

That worked quite nicely SS
Worship

Thanks again Very Happy
Back to top
View user's profile Send private message Send e-mail
SnarlingSheep
Professional Member
Professional Member


Joined: 13 Mar 2001
Posts: 759
Location: Michigan

PostPosted: Mon Feb 13, 2006 5:13 pm    Post subject: Reply with quote

No problemo.
_________________
-Sheep
My pockets hurt...
Back to top
View user's profile Send private message Send e-mail
kOt
Contributor
Contributor


Joined: 19 Jan 2004
Posts: 89
Location: Fyffe, AL

PostPosted: Tue Feb 28, 2006 7:11 pm    Post subject: Reply with quote

Im using a table and trying to achieve this..

Used every suggestion here and %P is always zero

This is what im trying to do.
1. Located position of scrollbar
2. Update my table with new information
3. Seek to location found in 1.

_________________
Visual Dialogscript 5
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger MSN Messenger
SnarlingSheep
Professional Member
Professional Member


Joined: 13 Mar 2001
Posts: 759
Location: Michigan

PostPosted: Tue Feb 28, 2006 7:25 pm    Post subject: Reply with quote

A table control is not a "list", even though VDS pretends it is. A table is a "list-view", so it needs to be handled differently, when I get some time I will try and convert it over.
_________________
-Sheep
My pockets hurt...
Back to top
View user's profile Send private message Send e-mail
SnarlingSheep
Professional Member
Professional Member


Joined: 13 Mar 2001
Posts: 759
Location: Michigan

PostPosted: Wed Mar 01, 2006 4:46 am    Post subject: Reply with quote

If you get the item that was selected before you do your updating, you
might try sending LVM_ENSUREVISIBLE to the table afterwards. It scrolls the table so that the selected item is in view.
Code:

REM LVM_ENSUREVISIBLE = $01013
%%SelectedItem = <Previously selected item here>
%P = @sendmsg(~Table1,$01013,%%SelectedItem,0)

_________________
-Sheep
My pockets hurt...
Back to top
View user's profile Send private message Send e-mail
kOt
Contributor
Contributor


Joined: 19 Jan 2004
Posts: 89
Location: Fyffe, AL

PostPosted: Wed Mar 01, 2006 12:48 pm    Post subject: Reply with quote

Thats a problem because i (more than not) do not have anything selected
i just scroll down to see what the information is

_________________
Visual Dialogscript 5
Back to top
View user's profile Send private message Send e-mail Visit poster's website Yahoo Messenger MSN Messenger
SnarlingSheep
Professional Member
Professional Member


Joined: 13 Mar 2001
Posts: 759
Location: Michigan

PostPosted: Wed Mar 01, 2006 3:56 pm    Post subject: Reply with quote

Because a List-View holds more than just text, it's a bit more complicated.
If you know pretty much how many items the user can see in your table at a time, this will probably work just fine for you:
Code:

REM LVM_GETTOPINDEX = $01039
%%TopItem = @sendmsg(~Table1,$01039,0,0)
REM Add the amount of items a user can see to %P
%%TopItem = @fadd(%%TopItem,50)
REM Do your updates to the table
... Code here ...
REM Use ensurevisible to scroll near what should have been the bottom item before
REM LVM_ENSUREVISIBLE = $01013
%%ret = @sendmsg(~Table1,$01013,%%TopItem,0)

_________________
-Sheep
My pockets hurt...
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic    forum.vdsworld.com Forum Index -> Advanced Help for VDS 5 & Up All times are GMT
Goto page 1, 2  Next
Page 1 of 2

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You can attach files in this forum
You can download files in this forum




Twitter@vdsworld       RSS

Powered by phpBB © 2001, 2005 phpBB Group