Setting a textbox returning error 'Unable to resolve the name'

Question

lewis williamson 2024-1-18

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评论： Walter Roberson 2024-1-20

I have a GUI function that defines a few text boxes under the structure S. When calling to update the value of the text box named 'S.Text_for_display' within a seperate function called 'Speak' I recive the error 'Unable to resolve the name 'S.Text_for_display'.'.

function []=Speak(txt)
set(S.Text_for_display,'String','','LineStyle','none','FontSize',14,'FontName','Comic Sans... MS','FitBoxToText','off');
len=length(txt);
for i=1:len;
    if i<=len;
        Display(txt(1:i));
        pause(.05);
    else 
        Display(txt);
    end
end
end

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Walter Roberson 2024-1-20

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for i=1:len;
    if i<=len;
        Display(txt(1:i));
        pause(.05);
    else 
        Display(txt);
    end

In a for loop that goes 1:len it is certain that i <= len so there is no point in having the if

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Answer 1

Dyuman Joshi 2024-1-18

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编辑：Dyuman Joshi 2024-1-19

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The function does not know what "S" is. You need to pass it as an input.

And the font name 'Comic Sans MS' does not have ellipses (3 dots) in it.

%For cross-check
listfonts
ans = 14×1 cell array
    {'Arial'          }
    {'Arial Black'    }
    {'Arial Narrow'   }
    {'Comic Sans MS'  }
    {'Courier'        }
    {'Courier New'    }
    {'Georgia'        }
    {'Helvetica'      }
    {'Impact'         }
    {'Terminal'       }
    {'Times'          }
    {'Times New Roman'}
    {'Trebuchet MS'   }
    {'Verdana'        }

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lewis williamson 2024-1-19

Ok, I'm still not sure how to parse the acutal textbox into the function here. If i try running your fucntion you have provided It does not recognise the textbox: 'method, property, or field 'Text_for_display' for class 'matlab.graphics.shape.TextBox''