helloworld-qwidget-borderless-custom-window

To Run

• Open it in Visual Studio 2015 and rebuild
  • To run it in visual studio
    • You need Visual studio 2015 (with update 2 or 3) + "C++" component installed with VS
    • You need Qt integration with visual studio
      • package need to be installed
    • you might need Qt 5.7
      • skip the user registeration part.

About App

• Frameless QWidget window with custom title bar and custom buttons.
• Customize by overriding native “resize” , “mouse” and “paint” events.
• Hover or focused border style on custom window/title bar.

GUI:

More Study

• Window frame is an OS specific thing and is not drawn by Qt. Approach is disabling window frame entirely by setting Qt::FramelessWindowHint flag on your widget, and drawing the frame and buttons yourself. This gives you control of the look of the frame, but is also a lot of work, because you need to handle all the windowing behavior like resizing, moving, maximizing or Aero Shake yourself.
• Frameless QMainWindow is resizable its own, but custom window or dialog need to have QSizeGrip to make it resizable.
• Title bar cannot be configured with stylesheet. Title bar is provided by Window Manager.