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Automatic scroll down on Matlab text window (uicontrol)

Calculate actual size needed for a MATLAB uicontrolmatlab show the figure and update the text of the uicontrolmatlab uicontrolsExtending MATLAB uicontrolMATLAB uicontrol 'edit' to show command window messagesMatlab uicontrol function modificationDisplay sprintf text in uicontrol text MATLABCreating an unknown amount of uicontrols in matlabbuilding scrolling window with Matlab GUIcan't get Matlab uicontrol 'text' box to position at top of figure window

0

I want to use Matlab to read continuously a file and to show it in a dedicated window. So I use the uicontrol command. It works well but I want to go directly at the end of the end of the content each time I update the content. Is there any solution for doing that?

MWE:

figHandle = figure('units','pixels',...
 'position',[40 40 240 940],...
 'menubar','none',...
 'resize','off',...
 'numbertitle','off',...
 'name','window custom')
txHandle = uicontrol('style','edit',...
 'units','pix',...
 'position',[10 60 220 830],...
 'backgroundcolor','w',...
 'HorizontalAlign','left',...
 'min',0,'max',10,...
 'enable','inactive');
txt=repmat('t|',1,100000);
set(txHandle,'string',cat(1,get(txHandle,'string'),txt));

matlab user-interface matlab-figure

share|improve this question

asked Mar 8 at 9:31

GuukGuuk

240112

add a comment | 

0

I want to use Matlab to read continuously a file and to show it in a dedicated window. So I use the uicontrol command. It works well but I want to go directly at the end of the end of the content each time I update the content. Is there any solution for doing that?

MWE:

figHandle = figure('units','pixels',...
 'position',[40 40 240 940],...
 'menubar','none',...
 'resize','off',...
 'numbertitle','off',...
 'name','window custom')
txHandle = uicontrol('style','edit',...
 'units','pix',...
 'position',[10 60 220 830],...
 'backgroundcolor','w',...
 'HorizontalAlign','left',...
 'min',0,'max',10,...
 'enable','inactive');
txt=repmat('t|',1,100000);
set(txHandle,'string',cat(1,get(txHandle,'string'),txt));

matlab user-interface matlab-figure

share|improve this question

asked Mar 8 at 9:31

GuukGuuk

240112

add a comment | 

I want to use Matlab to read continuously a file and to show it in a dedicated window. So I use the uicontrol command. It works well but I want to go directly at the end of the end of the content each time I update the content. Is there any solution for doing that?

MWE:

figHandle = figure('units','pixels',...
 'position',[40 40 240 940],...
 'menubar','none',...
 'resize','off',...
 'numbertitle','off',...
 'name','window custom')
txHandle = uicontrol('style','edit',...
 'units','pix',...
 'position',[10 60 220 830],...
 'backgroundcolor','w',...
 'HorizontalAlign','left',...
 'min',0,'max',10,...
 'enable','inactive');
txt=repmat('t|',1,100000);
set(txHandle,'string',cat(1,get(txHandle,'string'),txt));

matlab user-interface matlab-figure

share|improve this question

asked Mar 8 at 9:31

GuukGuuk

240112

figHandle = figure('units','pixels',...
 'position',[40 40 240 940],...
 'menubar','none',...
 'resize','off',...
 'numbertitle','off',...
 'name','window custom')
txHandle = uicontrol('style','edit',...
 'units','pix',...
 'position',[10 60 220 830],...
 'backgroundcolor','w',...
 'HorizontalAlign','left',...
 'min',0,'max',10,...
 'enable','inactive');
txt=repmat('t|',1,100000);
set(txHandle,'string',cat(1,get(txHandle,'string'),txt));

share|improve this question

asked Mar 8 at 9:31

GuukGuuk

240112

share|improve this question

asked Mar 8 at 9:31

GuukGuuk

240112

asked Mar 8 at 9:31

GuukGuuk

240112

asked Mar 8 at 9:31

GuukGuuk

240112

1 Answer
1

active

oldest

votes

1

There is no pure MATLAB way of doing so, but it is perfectly possible, using undocummented methods, manipulating the underlaying java components.

The first thing needed is the utility findjobj from Matlab central. You need to download this function and have it accessible in your MATLAB path. This function will retrieve the handle of the java object underlying the MATLAB text box.

Once you have access to the java methods of the textbox, moving the caret to the end of the text is trivial, you just need to call one of the component method: setCaretPosition(positionIndex).

Once you have the function findjobj in your MATLAB path, just add this code after your example code:

% Get the handle of the jave edit box
jtxtBox = findjobj(txHandle) ;
% Get the handle of the jave "panel" component
jTxtPane = jtxtBox.getComponent(0).getComponent(0) ;
% move the caret to the end of the text
jTxtPane.setCaretPosition( numel(txt) );

et voila :-)

share|improve this answer

answered Mar 8 at 10:57

HokiHoki

9,17411536

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you very much. Another solution could be to use jTxtPane.getDocument.getLength in place of numel(txt) but requires to add a pause(0.1) just before.
  
  – Guuk
  Mar 8 at 15:20
  

  
  
  
  

add a comment | 

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1

There is no pure MATLAB way of doing so, but it is perfectly possible, using undocummented methods, manipulating the underlaying java components.

The first thing needed is the utility findjobj from Matlab central. You need to download this function and have it accessible in your MATLAB path. This function will retrieve the handle of the java object underlying the MATLAB text box.

Once you have access to the java methods of the textbox, moving the caret to the end of the text is trivial, you just need to call one of the component method: setCaretPosition(positionIndex).

Once you have the function findjobj in your MATLAB path, just add this code after your example code:

% Get the handle of the jave edit box
jtxtBox = findjobj(txHandle) ;
% Get the handle of the jave "panel" component
jTxtPane = jtxtBox.getComponent(0).getComponent(0) ;
% move the caret to the end of the text
jTxtPane.setCaretPosition( numel(txt) );

et voila :-)

share|improve this answer

answered Mar 8 at 10:57

HokiHoki

9,17411536

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you very much. Another solution could be to use jTxtPane.getDocument.getLength in place of numel(txt) but requires to add a pause(0.1) just before.
  
  – Guuk
  Mar 8 at 15:20
  

  
  
  
  

add a comment | 

1

There is no pure MATLAB way of doing so, but it is perfectly possible, using undocummented methods, manipulating the underlaying java components.

The first thing needed is the utility findjobj from Matlab central. You need to download this function and have it accessible in your MATLAB path. This function will retrieve the handle of the java object underlying the MATLAB text box.

Once you have access to the java methods of the textbox, moving the caret to the end of the text is trivial, you just need to call one of the component method: setCaretPosition(positionIndex).

Once you have the function findjobj in your MATLAB path, just add this code after your example code:

% Get the handle of the jave edit box
jtxtBox = findjobj(txHandle) ;
% Get the handle of the jave "panel" component
jTxtPane = jtxtBox.getComponent(0).getComponent(0) ;
% move the caret to the end of the text
jTxtPane.setCaretPosition( numel(txt) );

et voila :-)

share|improve this answer

answered Mar 8 at 10:57

HokiHoki

9,17411536

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thank you very much. Another solution could be to use jTxtPane.getDocument.getLength in place of numel(txt) but requires to add a pause(0.1) just before.
  
  – Guuk
  Mar 8 at 15:20
  

  
  
  
  

add a comment | 

There is no pure MATLAB way of doing so, but it is perfectly possible, using undocummented methods, manipulating the underlaying java components.

The first thing needed is the utility findjobj from Matlab central. You need to download this function and have it accessible in your MATLAB path. This function will retrieve the handle of the java object underlying the MATLAB text box.

Once you have access to the java methods of the textbox, moving the caret to the end of the text is trivial, you just need to call one of the component method: setCaretPosition(positionIndex).

Once you have the function findjobj in your MATLAB path, just add this code after your example code:

% Get the handle of the jave edit box
jtxtBox = findjobj(txHandle) ;
% Get the handle of the jave "panel" component
jTxtPane = jtxtBox.getComponent(0).getComponent(0) ;
% move the caret to the end of the text
jTxtPane.setCaretPosition( numel(txt) );

et voila :-)

share|improve this answer

answered Mar 8 at 10:57

HokiHoki

9,17411536

% Get the handle of the jave edit box
jtxtBox = findjobj(txHandle) ;
% Get the handle of the jave "panel" component
jTxtPane = jtxtBox.getComponent(0).getComponent(0) ;
% move the caret to the end of the text
jTxtPane.setCaretPosition( numel(txt) );

share|improve this answer

answered Mar 8 at 10:57

HokiHoki

9,17411536

answered Mar 8 at 10:57

HokiHoki

9,17411536

answered Mar 8 at 10:57

HokiHoki

9,17411536