MATLAB: The figure position returned within the Figure ResizeFcn gives unexpected result.

Why does the figure position return unexpected results when we query for the position from inside figure resize callback functions (ResizeFcn property) on UNIX-based platforms?

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On UNIX-based platforms, when a figure has a ResizeFcn that changes the position of the callback figure (the figure returned by "gcbf"), the results are not always as expected. The unexpected behavior happens when the ResizeFcn is triggered by manually changing the figure's size using the mouse. In this case, the ResizeFcn is fired several times during the manual resize, and is always fired with the final manually-applied position value, but this final call can happen before the mouse button is released. However, MATLAB might not be able to resize a figure while it is being manually resized by the mouse. Unfortunately there is no workaround for this issue.

This behavior differs from the behavior on Windows, where the ResizeFcn is not called during the manual resize, but instead is called one time after the mouse button is released.

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MATLAB: Does the execution of the callback function cause another figure to be opened instead of acting on the GUI in MATLAB

This can occur if you are using GCF in your callback function. GCF is a convenience function that returns the handle of the root object's "CurrentFigure" property. This property can only hold a figure whose handle is visible, i.e. the HandleVisibility is "on" (or "callback" while a callback is executing). If the figure's "HandleVisibility" is "off", then its handle will not be stored in the root object's "CurrentFigure" property. In this case, GCF will return either another figure (whose "HandleVisibility" is "on") or a new figure (if there are no figures with the appropriate "HandleVisibility" value).

Instead of GCF, you should use either GCBF, or the handle of the figure from the "handles" structure. GCBF will return the handle of the figure that contains the current callback object, i.e. the last object interacted with. The "handles" structure should contain the handle for the figure automatically, unless its Tag was modified and can not be used as a fieldname.

For instructions on plotting into axes in your GUI, see the Related Solution listed below:

MATLAB: Is it possible for the ResizeFcn to be called while dragging to resize the window in a MATLAB figure

The ability to execute the ResizeFcn callback continuously during a manual resizing of the figure is not available in MATLAB 7.0 (R14).

If you are using a version of MATLAB prior to MATLAB 7.3 (R2006b), you may work around this issue by turning java figures off using the following command. Please note that this workaround will not be valid after MATLAB 7.3 (R2006b) as this feature will not be available:

feature('javafigures',0);

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MATLAB: Does the execution of the callback function cause another figure to be opened instead of acting on the GUI in MATLAB

MATLAB: Is it possible for the ResizeFcn to be called while dragging to resize the window in a MATLAB figure

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