MATLAB: How can put or place cursor a tex edit box in GUI without a mouse click

gui text box cursor placement

Hello,

I made a simple GUI . There is 2 text box in edit Style as Username and Password. But When I started GUI, I want to see cursor in Username Text box without any mouse click. regards,I couldn't success this for 2 days. Can you help me please.

Best Answer

Try using uicontrol to set focus to the username text box.

If you are using GUIDE, then in the OpeningFcn just add the line

 uicontrol(handles.edit1);

where edit1 is the handle to the edit text box for the username.

If not using guide, then you should be able to do the same call with the handle to the text box. Something like

 figure;
 hUsername = uicontrol('Style','edit','Position',[2 30 12 2],'Units','characters');
 hPassword = uicontrol('Style','edit','Position',[2 26 12 2],'Units','characters');
 % set focus
 uicontrol(hUsername);

Related Solutions

MATLAB: How to move cursor line within edit box of uicontrol

Your best choice is probably to work at the Java level, taking advantage of some of the information about uicontrol that you can find at http://undocumentedmatlab.com

If you want to stay within MATLAB without taking advantage of the underlying Java, then the way to handle this is to create a uicontrol that is as wide as the largest string you might ever need. Then put that uicontrol inside a uipanel ("inner panel") that is slightly wider still. Then put that inner panel inside of another uipanel ("outer panel") that is the width of the screen area you want to display into, with the outer panel set to clip. Now, arrange your scrolling so that what the scrolling does is set the Position of the inner uipanel relative to the outer uipanel. This is like having a fixed area of clear glass that you are moving a book under.

I do not recommend putting the uicontrol directly inside just one uipanel and then setting the Position of the uicontrol to accomplish the scrolling. Although that would seem to accomplish the same effect, changing the Position of a uicontrol is high overhead because it makes the uicontrol recalculate the drawing of the string. I also have found other problems with using only a single uipanel like that, but I do not recall what they are at the moment.

Notice with this second approach, you never try to change the uicontrol itself -- never try to scroll it for example. The control you have over scrolling a uicontrol at the MATLAB level is pretty weak, unfortunately.

MATLAB: Visibility of an edit text / GUI

First of all, I think you should use a togglebutton, as with a pushbutton the edit box would go invisible as soon as you let go of the mouse button.

for the button callback:

if get(hObject,'Value')
    set(handles.editTag,'Visible','On')
else
    set(handles.editTag,'Visible','Off')
end

Where editTag is the Tag of your edit button (The default is edit1)

Best Answer

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MATLAB: How to move cursor line within edit box of uicontrol

MATLAB: Visibility of an edit text / GUI

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