Lock the window zoom

Question

How can I block the window rise QDialog and QWidget?

For example, in the Skype login window you cannot enlarge the window.

Answer 1

In the builder you can do the following:

setFixedSize(size());

Or still to use recommended size instead of standard:

setFixedSize(sizeHint());

So the maximum and minimum window size will be set to the same value, it will not be resizable.

A better way to do this (which will resize the window if the content changes, but will always make the window ideal for your content) is by using QLayout::SetFixedSize. See the response from C. E. Gesser.

Additionally, you can set the flag Qt::MSWindowsFixedSizeDialogHint which in Windows creates a thin-edged window, visually indicating to the user that it is not resizable.

setWindowFlags(windowFlags() | Qt::MSWindowsFixedSizeDialogHint);

Answer 2

You can use the method setFixedSize(const QSize &) class QWidget to set a fixed size for a window. In practice it sets the maximum and minimum window size for the value that is passed by parameter.

If you want the size to be fixed but based on the window components, use the setSizeConstraint(SizeConstraint) class QLayout, with the parameter SetFixedSize:

layout()->setSizeConstraint(QLayout::SetFixedSize);

Answer 3

You can use the method setFixedSize to do this.

Example:

setFixedSize(this->geometry().width(),this->geometry().height());