Qt Widget Pos - Qt空间位置

To get Qt widget position,we can call function such as:

 geometry(),pos(),x(),y(),width(),height()

The difference between geometry() with pos(),x(),y(),width(),height() below:

when we call geometry(),this will return a QRect,it indicates the widget position exclude window frame,but size with them(designed in QtDesigner).

when we call x(),y(),they will return the widget x-coordinate and y-coordinate include window frame.

when we call pos(),this will return the widget position within its parent.

when we call width(),height(),exclude the window frame.

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  but pay attention:all these functions will return value relative to their parent,so,to QMainWindow,these functions will return its postion relative to the desktop,but to other sub-widgets ,these functions always return the value relative to their parent widget

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the diagram below: