uisetcolor dialog box may appears partially outside the screen. How to fix this?

In fact it appears where you click. If you create a button with 'uisetcolor' as callback, the dialog box appears near the button. And if the button is near the screen borders, the dialog box is not displayed entirely, making it sometimes impossible to move!

[Adam]

I don't seem to be able to reproduce this behaviour in R2017b. Wherever in a UI I position a button to call uisetcolor it always launches the dialog in the same place: If I am on my main monitor the launched dialog is always within the bounds of my main figure, and seems to always be in the top left corner. If I am on my secondary monitor the uisetcolor dialog seems to always launch right in the centre of my main monitor. e.g. this is for the first case:

I have changed a preference setting to use the better old uisetcolor dialog rather than the rather useless new one that was released around R2017a time, but I don't know if that makes a difference. Which version of the software are you using?

[Luc Masset]

Hi Adam,

it seems that the dialog box on my Matlab 2017b is not the same than yours! Strange!

I do this:

figure('menubar','none','position',[1 1 400 60])

hb=uicontrol('position',[10 10 100 20],'callback','uisetcolor');

then clicking on the button opens the dialog box but partially visible.

I'm on Windows 10 64bits.

[Luc Masset]

BTW, how do you change the uisetcolor preference? I did not manage to find that.

[Adam]

https://uk.mathworks.com/matlabcentral/answers/321269-opening-uisetcolor-extremely-slow-r2016b?s_tid=answers_rc1-2_p2_MLT

As I mentioned, it may be different for that new colour picker, which I rejected. I created my own colour picker in the end, but I still find it useful to have uisetcolor sometimes which is why I set it to use the old version. It is a hidden preference in code rather than a visible one, as described in a comment to the answer in the linked thread.

Answer 1

[Jan]

Not a direct solution of your problem, but maybe it helps to use one of the alternative color choosers: https://undocumentedmatlab.com/blog/color-selection-components

cc = javax.swing.JColorChooser;
[jColorChooser,container] = javacomponent(cc,[1,1,450,325],gcf);
jColorChooser.getColor

Or

cp = com.mathworks.beans.editors.ColorPicker;
[jColorPicker,container] = javacomponent(cp,[1,1,400,200],gcf);

Or:

options = 0;
icon = 0;
cp = com.mathworks.mlwidgets.graphics.ColorPicker(options,icon,'');
[jColorPicker,hContainer] = javacomponent(cp,[10,220,30,20],gcf);

[Luc Masset]

Thx Jan. I know Yair's site. It just seems to be a bug to me. I will use Java ColorPicker if this bug is not fixed soon.

[Jan]

@Luc: Did you write a bug report to MathWorks already? Usually bugs are fixed with new versions and maybe the code of R2018a is not closed yet.