Changing properties of menu

Question

David Koenig 2012-2-24

1
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/30209-changing-properties-of-menu

I am trying to increase the font size in the menu. In the script below I am able to do that but it also increases the font size in subsequent plots even though I do reset the font size within the loop. Also, if I click on "quit" I get out of the loop and the final plot has the desired smaller font size. Finally, I always get "MENU: No menu items to choose from." whenever I run this script. Therefore, is it possible to change the font size of the menu entries and then change it back for any plots to follow...and how do I get rid of the "MENU: No menu items to choose from." messages?

Here is the test script:

close all; clear;

ii=1;

while ii==1

    fh=menu;
    set(fh,'ScreenPixelsPerInch', [150]);
    kk=menu('Choose','quit','continue');
    set(menu,'ScreenPixelsPerInch', [96]);
    fh=figure;
    plot(1:10,1:10),grid
    title('Test Plot')
    if kk==1
        break
    end
end

Thanks,

Dave

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Answer 1

Sean de Wolski 2012-2-24

0
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此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/30209-changing-properties-of-menu#answer_38662

在 MATLAB Online 中打开

This line causes the "no items to choose from warning":

fh=menu;

The reason this is working at all is because you are changing the root property (i.e. MATLAB base property) screenpixelsperinch

This happens because

fh = menu

returns 0, the root identifier. To get the behavior you want:

ii=1;
while ii==1
  oldSPPI = get(0,'screenpixelsperinch'); %store old one
  set(0,'screenpixelsperinch',200); %increase - will affect everything
  kk = menu('choose','me','no me!','go home it''s Friday!');
  set(0,'screenpixelsperinch',oldSPPI); %restore
  figure;
  plot(1:10,1:10),grid
  title('Test Plot')
  if kk==1
      break
  end
end

Thus the reason it affects everything, is, well you're changing MATLAB's settings.

If this functionality is really important to you, I suggest you write your own menu function and increase the fontsize of the uicontrols manually. See Matt Fig's demos:

FEX: Matt's Guis

Post a new question if you choose to go this route and need assistance!