Change the check box value of a Matlab Tree Node Check Box via code

Question

Tom 2023-2-14

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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/1912140-change-the-check-box-value-of-a-matlab-tree-node-check-box-via-code

编辑： Are Mjaavatten 2024-1-16

Dear mathworks community,

I am currently developing a Matlab GUI and my main element is a Matlab Tree (Check Box) in the Matlab App Designer.

As there are potentially more than 30 Nodes aavalaible to select, I want to add a "SELECT ALL" check box to the gui, that changes the value of all check boxes of the Tree Node to checked or unchecked. Is there a way to do so? Is there a command to change the value of the check box of the node?

If there is no easy way to do it, can you imagine a workaround?

Thanks in advance for your help!

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Answer 1

Cameron 2023-2-14

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https://ww2.mathworks.cn/matlabcentral/answers/1912140-change-the-check-box-value-of-a-matlab-tree-node-check-box-via-code#answer_1171210

在 MATLAB Online 中打开

Can you not make them second level nodes?

fig = uifigure;
cbt = uitree(fig,'checkbox','Position',[20 20 150 150]);
% First level nodes
category1 = uitreenode(cbt,'Text','All','NodeData',[]);
% Second level nodes.
p1 = uitreenode(category1,'Text','Option 1');
p2 = uitreenode(category1,'Text','Option 2');
p3 = uitreenode(category1,'Text','Option 3');
p4 = uitreenode(category1,'Text','Option 4');
p5 = uitreenode(category1,'Text','Option 5');

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Cameron 2023-2-14

在 MATLAB Online 中打开

fig = uifigure;
cbt = uitree(fig,'checkbox','Position',[20 20 150 150]);
% Second level nodes.
p1 = uitreenode(cbt,'Text','Option 1');
p2 = uitreenode(cbt,'Text','Option 2');
p3 = uitreenode(cbt,'Text','Option 3');
p4 = uitreenode(cbt,'Text','Option 4');
p5 = uitreenode(cbt,'Text','Option 5');
%if you don't run this next line, none of the boxes will be checked.
cbt.CheckedNodes = cbt.Children;

Are Mjaavatten 2024-1-16

编辑：Are Mjaavatten 2024-1-16

在 MATLAB Online 中打开

I needed to start with all boxes checked. This function does this for two levels.

function checkbox_tree_check_all(tree)
topNodes = tree.Children;
allNodes = topNodes;
for i = 1:numel(topNodes)
    allNodes = [allNodes;topNodes(i).Children];
end
tree.CheckedNodes = allNodes;
end