GUI: Change backround of "Edit text" box using if structure
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Hello! In my GUI I have two inputs and output (they are "Edit text" boxes) and a button which executes a function. As I said, the final output goes to Edit Text box. I want to analyze this output with if structure, and, depending on the value, assign different background color for the box.
I tried using set(hObject,'BackgroundColor','color'), (example below) And it worked..
function box_CreateFcn(hObject, eventdata, handles)
set(hObject,'BackgroundColor','color')
But when it is inside IF structure, MATLAB returns many errors and code doesn't work (see code below)
function box_CreateFcn(hObject, eventdata, handles)
if value <-30
set(hObject,'BackgroundColor','blue');
elseif value>=-30
set(hObject,'BackgroundColor','grey');
elseif value<=100
set(hObject,'BackgroundColor','black');
else
set(hObject,'BackgroundColor','red');
end
What am I doing wrong? :)
댓글 수: 1
Jan
2012년 11월 26일
When ever you mention, that errors appear, it is a good idea to post the messages also.
채택된 답변
Arthur
2012년 11월 26일
Explain 'many errors'. How can we fix many errors with we don't know what they are?? I'm going to make an estimated guess. If your code is exactly as you showed here, than you forgot to get the string of the textbox. Include this above your if.
value = str2double(get(hObject,'String'))
Also, the way you programmed your if's is not going to work; it will never reach the last two options. Note that matlab always goes to the first if that is true, and value will always be <-30 or >=-30....
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추가 답변 (1개)
Image Analyst
2012년 11월 26일
편집: Image Analyst
2012년 11월 26일
Have you tried to use the debugger? Set a breakpoint and see if it actually gets into any of the "if" conditions that you list.
And what is "value" - have you assigned that yet?
And you can try using handles.box instead of hObject.
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