How to evaluate calback function in edit text uicontrol?
조회 수: 9 (최근 30일)
이전 댓글 표시
I have just started to learn about low-level GUI programing.
Is this the right way to write code. I need my variable b to change every time i hit new entry into edit text but I'm not geting that.
Am I missing evaluate function somewhere?
This is a simple example
fig_h=figure;
callb=['b=get(a,''string'')']
a=uicontrol(fig_h,'Position',[ .5 .5 .08 .06],'Style','edit','CallBack','callb','String','0','Units','normalized');
Thanks
댓글 수: 0
채택된 답변
Matt Fig
2012년 10월 19일
편집: Matt Fig
2012년 10월 19일
Please do not program callback using strings. Use function handles instead. Save this in an M-file then run the file to see how it works.
function [] = my_gui()
fig_h=figure;
a = uicontrol(fig_h, 'Style','edit',...
'Units','normalized',...
'Position',[.5 .5 .08 .06],...
'CallBack',@callb,...
'String','0');
function [] = callb(H,E)
a = get(H,'string');
disp(['The string in the editbox is: ',a])
Here is a tutorial that starts basic and builds up to more advanced GUIS. I encourage you to work through it.
댓글 수: 0
추가 답변 (2개)
Walter Roberson
2012년 10월 19일
Callbacks that are given as strings are executed in the context of the base workspace, so look for b there.
댓글 수: 0
참고 항목
카테고리
Help Center 및 File Exchange에서 Migrate GUIDE Apps에 대해 자세히 알아보기
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!