The Qt Subwindow is embedded in the parent window (no border with show)

Sometimes it is necessary to embed a child window into the parent window.

We can do this.

1. Create a new subclass of Qwidget or Qdialog ClassA (parent class is CLASSB)

2. Add the Settings window property in the new class's constructor

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1. Setwindowflags (qt::customizewindowhint| Qt::framelesswindowhint);

Closes the default window caption prompt and a window without Borders.

3. Called in the parent window.

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1. ClassA *a;
2. A = New ClassA (this);
3. A->show ();

Show it where it's going to show.

Reference: http://blog.csdn.net/kfbyj/article/details/8841525

The Qt Subwindow is embedded in the parent window (no border with show)