How to update mouse position when button is pressed in gui.
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I'm trying to write a function for a gui, pretty much my own zoom function. I have most of it worked out aside from bounding it to the axis. I start it with an if so that it will only run when the mouse clicks inside the axis. The only problem is that when I press a button or checkbox, the mouse position isn't updated, so it senses the click but thinks that the mouse coordinates are inside the axis and it runs the function again. How can I fix this so that the function will only be run when I click inside the axis.
Akhilesh Thakur on 8 Aug 2017
Edited: Adam on 9 Aug 2017
Yes this problem happens it wont be updated as you are going through the callbacks of the button. The solution to this problem is update your mouse position in the callbacks itself. Also if you want to refer how to retreive the positions manually go through these links https://www.mathworks.com/matlabcentral/answers/142488-matlab-get-function-and-detecting-user-mouse-click https://www.mathworks.com/matlabcentral/newsreader/view_thread/22261
Hope this helps
Jan on 9 Aug 2017
You can try to determine the mouse position by Java:
MouseInfo = java.awt.MouseInfo.getPointerInfo();
Pos = MouseInfo.getLocation();
x = int32(Pos.getX());
y = int32(Pos.getY());
This is in screen coordinates and the conversion to the coordinates of the axes is not trivial. But the problems to identify the clicks on the uicontrol's reveals a general problem with your approach: It seems to be a design mistake, that the zoom function reacts to clicks on buttons. Either zooming is triggered by the ButtonDownFcn of the axes only, or it is unintuitive, because the user cannot know, which parts of the figure are allowed to start the zooming. Think twice if your current approach (using the WindowsButtonDownFcn ?) is really the direct solution of the job.