UniScrollBox Vertical and Horizontal Scroll Position

[dkeene]

Hello

I am trying to retrieve the position of the horizontal and vertical positions on a UniScrollbox. I try

   aScrollX:=Self.UniScrollBox1.HorzScrollBar.Position;
   aScrollY:=Self.UniScrollBox1.VertScrollBar.Position;
 

and I get an access violation. Any Ideas?
Thanks

Doug

[dkeene]

Hello

Is there anyone on the forum that could make a quick example of any way to get the scroll positions of the vertical and horizontal scroll bars? The positions can't be read from delphi, they probably need to go through AJAX, which i am learning, but not yet able to make work.

 

I occasionally need to know where a coordinate is on a scrollbox that might be scrolled with respect to Horizontal or Vertical Position.

 

Thank you kindly

Doug

[Sherzod]

49 minutes ago, dkeene said:

I occasionally need to know where a coordinate is on a scrollbox that might be scrolled with respect to Horizontal or Vertical Position.

Hello,

Do you want something like this?

procedure TMainForm.UniButton1Click(Sender: TObject);
begin
  with UniScrollBox1 do
    JSInterface.JSCode('ajaxRequest('#1',"getScrollPositions", ["Top="+'#1'.getScrollY(), "Left="+'#1'.getScrollX()]);');
end;

procedure TMainForm.UniScrollBox1AjaxEvent(Sender: TComponent;
  EventName: string; Params: TUniStrings);
begin
  if EventName = 'getScrollPositions' then
  begin
    ShowMessage(Params.Values['Top']+','+Params.Values['Left']);
  end;

end;

 

[dkeene]

Thank you very much.

[Kenneth]

@Sherzod How to do it for mobile version? 

[Sherzod]

24 minutes ago, Kenneth said:

How to do it for mobile version? 

Hello,

You can use OnScrollChange event.

[Kenneth]

@Sherzod Thanks It work. Actually I need to change TUnimScrollBox position. How can I do it?

[Sherzod]

5 hours ago, Kenneth said:

Actually I need to change TUnimScrollBox position. How can I do it?

procedure TMainmForm.UnimBitBtn1Click(Sender: TObject);
begin
  //UnimScrollBox3.ScrollTo(20, 20);
  UnimScrollBox3.JSInterface.JSCode(
    #1'.getScrollable().getScrollingElement().dom.scrollTo({'+
    '  top: 20,'+
    '  left: 20'+
    '});'
  );
end;

 

[Kenneth]

@Sherzod  Thanks, very good!   It's cool!