RE-use helper function on multiple GUI components

Question

Ryan Martin 2020-8-4

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/575062-re-use-helper-function-on-multiple-gui-components

回答： Cris LaPierre 2020-8-4

I am working on an app that displays information about an image that has been loaded. The user imports an image and it is displayed on an axes component. From there, the user selects 4 ROIs and the app displays some properties of each ROI (pixel count, average value, min and max, std dev) in a panel. Rather than write 4 separate functions for displaying all the information, is there a way I can re-use one function to update each panel? Right now I am looking at replicating this 4 times (r1, r2, r3, and r4):

app.r1PixelsEditField.Value = region.pixel_count;
app.r1AvgCountsEditField.Value = region.count_average;
app.r1MinCountEditField.Value = region.count_min;
app.r1MaxCountEditField.Value = region.count_max;
app.r1StdDevEditField.Value = region.std_dev;

0 个评论
显示 -2更早的评论隐藏 -2更早的评论

请先登录，再进行评论。

请先登录，再回答此问题。

Answer 1

Cris LaPierre 2020-8-4

1
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/575062-re-use-helper-function-on-multiple-gui-components#answer_475150

在 MATLAB Online 中打开

Since the app structure is a structure, you can dynamically set the field names. There are a couple ways you could do it. Here's a simple example I mocked up using your component names.

% Private function created in app designer
function updateEdits(app,r)
    app.(r+"PixelsEditField").Value = 3;
    app.(r+"AvgCountsEditField").Value = 5;
    app.(r+"MinCountEditField").Value = 10;
    app.(r+"MaxCountEditField").Value = 15;
    app.(r+"StdDevEditField").Value = 200;
    
end

I then had a button that, when pressed, would update the values of these 5 edit fields for r1, r2 and r3.

% Button pushed function: Button
function ButtonPushed(app, event)
    updateEdits(app,"r1");
    updateEdits(app,"r2");
    updateEdits(app,"r3");
end