LayoutRect rect(0, 0, 100, 50); // creates a new LayoutRect with x=0, y=0, width=100, height=50 rect.setWidth(200); // sets the width of the rect to 200
LayoutRect rect; rect.setWidth(50);In this example, we create a new LayoutRect object using the default constructor, then we use the setWidth function to set its width to 50. Overall, the setWidth function is a useful tool for developers working with the Qt library to define or modify the attributes of LayoutRect objects.