of classes. Its type parameters encode the information about each
QtWidgets is the "older" way of writing Qt applications.
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The biggest downside to laser printers is typically a lower level of detail, particularly when mixing colors, so you’ll want to opt for something else if you plan on printing full color photos. Because they use heat to bond the toner with the paper, they may melt paper with plastic in it, like windowed envelopes or sticker sheets, so you’ll want to avoid them if anything but matte paper and cardstock are in the cards for you.