VBA-like "with" function ? + get(0,'ScreenSize')

I have just installed Matlab R2015a with the new object-oriented syntax to get/set graphic object properties e.g.:

   h_quit.Enable = 'On'

instead of:

   set(h_quit,'enable','on')

Very good. But is there a "with" function similar to the one in VBA, that could allow us in some cases to save characters in program ? That way, we could write:

With data.UsedByGuiData_m

       .TagPanel(2).Visible = 'off'
       .TagPanel(3).Visible = 'off'
       .TagPanel(4).Visible = 'off'
       .TagPanel(5).Visible = 'off' 

endwith

instead of:

data.UsedByGuiData_m.TagPanel(2).Visible = 'off';
data.UsedByGuiData_m.TagPanel(3).Visible = 'off';
data.UsedByGuiData_m.TagPanel(4).Visible = 'off';
data.UsedByGuiData_m.TagPanel(5).Visible = 'off';

Another question related to this new syntax:

to retrieve the resolution of my computer screen, I use:

get(0,'ScreenSize')

I have tried the new syntax:

0.ScreenSize

But it doesn't work, I get the following error message:

Parse error at ScreenSize: usage might be invalid Matlab syntax.

Is it normal ?

Answer 1

[Titus Edelhofer]

Hi Luis,

not really. What you can do is to assign to an intermediate variable, something like

lTagPanel = data.UsedByGuiData_m.TagPanel;
lTagPanel(2).Visible = 'off'
lTagPanel(3).Visible = 'off'
lTagPanel(4).Visible = 'off'
lTagPanel(5).Visible = 'off'

or use multiple assignments at once:

[data.UsedByGuiData_m.TagPanel(2:5).Visible] = deal('off')

although I guess easier readable would be the "set" notation in this case

set(data.UsedByGuiData_m.TagPanel(2:5), 'visible', 'off')

Regarding the question on 0: you need to create a variable

r = groot;
r.SreenSize

Since groot is a function, groot.ScreenSize does not work ...

Titus

[Luis Vieira da Silva]

Hi Titus,

Everything is clear. Thank you !

Luis