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How to use get and set to remove the last value of a string in a text uicontrol?

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theblueeyeswhitedragon
theblueeyeswhitedragon 2018 年 4 月 11 日
回答済み: Walter Roberson 2018 年 4 月 11 日
function script4()
fig = figure('units', 'pix', 'position', [300, 300, 300, 300], 'menubar','none','resize', 'off');
pushbuttonh = uicontrol('style', 'pushbutton', 'unit', 'normalized', 'position', [0.3, 0.075, 0.4, 0.1], 'string', 'Clear one character', 'Callback', @pushbuttonh_Callback);
edittexth = uicontrol('style', 'text', 'unit', 'normalized', 'position', [0.1, 0.3, 0.8, 0.5], 'string', 'This is the string');
function pushbuttonh_Callback(source, event)
currentChar = get(edittexth, 'String');
if ~isempty(currentChar)
set(edittexth, 'String', edittexth(1:end-1));
else
set(editexth, 'String', 'There is nothing to delete');
end
end
end

回答 (1 件)

Walter Roberson
Walter Roberson 2018 年 4 月 11 日
You should be subscripting the current characters not the handle.

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