Purpose of sizeHint() and minimumSizeHint() ? (solved)

[houmingc]

What is the purpose of sizeHint() and minimumSizeHint() ?
I see it often in widget class
QSize LED ::sizeHint() const{
return QSize(diamX_ , diamY_);
}

QSize LED ::minimumSizeHint() const {
return QSize(diamX_, diamY_);
}

[mrjj]

sizeHint : const QSize
This property holds the recommended size for the widget.

minimumSizeHint : const QSize
This property holds the recommended minimum size for the widget.

[houmingc]

So which function takes precedence? sizeHint or minimumSizeHint
Or user have to explicitly call either function?

[mrjj]

@houmingc

hi
Both are used
When the widget is created the system uses sizeHint for how to big to make at start.
When the widget is resized ( by layout, by user dragging) the minimumSizeHint is used to
make sure it never becomes smaller than that.