Slider not moving, any suggestions?
in [Matlab]
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From: Eli on 7 Apr 2010 16:00 Hi, I writing a GUI that contains couple of sliders. I've set the SliderStep properties, and it works fine when clicking the arrows on sides of the slider, but when I click on the trough - nothing. The slider is not moving. Does anyone has any idea why this is happening? Thank You Rachel
From: ImageAnalyst on 7 Apr 2010 16:48 On Apr 7, 4:00 pm, "Eli " <racheli.ma...(a)gmail.com> wrote: > Hi, > > I writing a GUI that contains couple of sliders. > I've set the SliderStep properties, and it works fine when clicking the arrows on sides of the slider, but when I click on the trough - nothing. The slider is not moving. > Does anyone has any idea why this is happening? > > Thank You > Rachel --------------------------------------------------------- Maybe your large step size is so large that it would put the thumbbar beyond the max of min end of your slider.
From: Steven Lord on 7 Apr 2010 16:56 "Eli " <racheli.magid(a)gmail.com> wrote in message news:hpio8q$4jf$1(a)fred.mathworks.com... > Hi, > > I writing a GUI that contains couple of sliders. I've set the SliderStep > properties, and it works fine when clicking the arrows on sides of the > slider, but when I click on the trough - nothing. The slider is not > moving. > Does anyone has any idea why this is happening? That depends. What value did you use to set the SliderStep property? http://www.mathworks.com/access/helpdesk/help/techdoc/ref/uicontrol_props.html#SliderStep I could see this behavior if you set it to something like [0.01, 0]: h = uicontrol('Style', 'slider', 'Min', 0, 'Max', 1, 'Value', 0, ... 'SliderStep', [0.01 0], ... 'Callback', 'fprintf(''%g\n'', get(gcbo, ''value''));'); Note that when you click on this slider's trough, the Callback triggers but the slider doesn't move. That's because the Value is changing by 0% of the length (Max-Min) of the slider. -- Steve Lord slord(a)mathworks.com comp.soft-sys.matlab (CSSM) FAQ: http://matlabwiki.mathworks.com/MATLAB_FAQ
From: Eli on 8 Apr 2010 02:19 Thanks for the answer, but I don't think this is the problem. I've set the SliderStep to [0.05 0.25], which is probably OK. I think the problem is that clicking in the trough does not activates any callback function. Do I need to define a special callback for the trough clicking, other than the default callback? Does ButtonDown function has anything to do with it? Thank you Rachel
From: Eli on 8 Apr 2010 02:20 Thanks for the answer, but I don't think this is the problem. I've set the SliderStep to [0.05 0.25], which is probably OK. I think the problem is that clicking in the trough does not activates any callback function. Do I need to define a special callback for the trough clicking, other than the default callback? Does ButtonDown function has anything to do with it? Thank you Rachel
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