Use wxBitmapBundle in wxGtkImage and select the appropriately-sized bitmaps depending on DPI in wxGTK wxToolBar. See https://github.com/wxWidgets/wxWidgets/pull/2547
Use wxBitmapBundle in wxGtkImage and select the appropriately-sized bitmaps depending on DPI in wxGTK wxToolBar. See https://github.com/wxWidgets/wxWidgets/pull/2547