button.Resize not functional about fyne HOT 5 CLOSED

You are putting the button in a container with layout (GridWrapLayout). The Resize function on button will be called by the layout to manage the size and position. If you want to manually resize widgets using Resize, you must put them in a container without a layout (container.NewWithoutLayout) and then you need to manually manage the size and position. Or more likely what you want is a different layout that allows the buttons to be bigger.

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I want make the logo become bigger, using container.NewWithoutLayout is make the size bigger, but not the logo size

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The size of the logo is managed by the button widget and is set to a standard size. If you need the icon to be bigger, you will need to use a custom widget, or open a feature request (not a bug report) for allowing the button icons to scale up if the button itself is larger.

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can you give me an example of custom widget?

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https://docs.fyne.io/extend/custom-widget

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