如何根据Qt5中的窗口大小更改为Qlabel启用自动调整大小？

Question

I am beginning with a Qt5 programming. I am working on an image crop application. the Qlabel which is holding the loaded image is of a fixed size. I need the Qlabel to auto resize in accordance with the main window size changes

Default screen

resized screen

Answer 1

Try using different QLayouts. The entire purpose of Qlayouts is the take of responsibility of sizing and positioning from you. That's something that Qt dose very well, in comparison to other UI frameworks.

Read this http://doc.qt.io/qt-5/layout.html

mentioned in the comment, here's a solution I did in 20mins. http://www.pilypala.com/sites/default/files/resizing.zip