How to pass handle of checkbox to another callback

Question

Michael 2012-12-3

0
链接

此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/55504-how-to-pass-handle-of-checkbox-to-another-callback

Hi,

I would like to pass an array of handles to uipushtool 'ClickedCallback'.

when I tried doing that I received the following error message:

??? Undefined function or variable 'handel'.
??? Error while evaluating uipushtool ClickedCallback

This is the code I wrote:

function [  ] = Creat_menu( fig ,im)
%Creat_menu adds push buttons to the import picture.
%The push buttons that are added reprisents the sport type.
%h = figure('ToolBar','none');
% Create the toolbar
th = uitoolbar(fig);
% Add a push tool to the toolbar
tennis = imread('tennis logo 16x16.jpg');%Read the image.
basketball = imread('basketball logo 16x16.jpg');%Read the image.
volleyball = imread('volleyball logo 16x16.jpg');%Read the image.
handel(1) = uicontrol('style','checkbox','units','pixels',...
                  'position',[0,0,80,15],'string','Color_Filter');
handel(2) = uicontrol('style','checkbox','units','pixels',...
                  'position',[0,20,100,15],'string','Variance_Filter'); 
handel(3) = uicontrol('style','checkbox','units','pixels',...
                  'position',[0,40,100,15],'string','User Algoritem');
handel(4) = uicontrol('style','checkbox','units','pixels',...
                  'position',[0,60,100,15],'string','Matlab Algoritem');
tennis_pth = uipushtool(th,'CData',tennis,...
        'TooltipString','tennis',...
             'HandleVisibility','off',...
         'ClickedCallback','SearchForBall(im,handel,''Tennis'')'...
         );  
basketball_pth = uipushtool(th,'CData',basketball,...
        'TooltipString','basketball',...
             'HandleVisibility','off',...
         'ClickedCallback','SearchForBall(im,handel,''Basketball'')'...
               );  
volleyball_pth = uipushtool(th,'CData',volleyball,...
        'TooltipString','volleyball',...
             'HandleVisibility','off',...
         'ClickedCallback','SearchForBall(im,handel,''Volleyball'')'...
               );          
end

Thanks,

Michael

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Answer 1

Walter Roberson 2012-12-3

0
链接

此回答的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/55504-how-to-pass-handle-of-checkbox-to-another-callback#answer_67308

在 MATLAB Online 中打开

You are defining handel within Creat_menu. The handel that appears when you create those callbacks is in string form. Strings for callbacks are evaluated in the context of the base workspace... and in that workspace, handel does not exist.

Define your callbacks as anonymous functions instead, such as

'ClickedCallback', @(im) SearchForBall(im, handel, 'Tennis')