The first one created will be designated the default menu bar and will be used whenever a default menu bar is needed. However, you can create a different default menu bar by creating a parentless QMenuBar. The default menu bar on Qt is an empty menu bar. If all else fails, a default menu bar will be created. These tests are followed all the way up the parent window chain until one of the above rules is satisifed. If the window has no parent, then the default menu bar is used (as documented below).If no menu bar is specified, then a default menu bar is used (as documented below). If the window is modal, then its menu bar is used.If the window has a QMenuBar, then it is used.However, if you have special needs, the Qt implementation currently selects a menu bar by starting at the active window (for example, QGuiApplication::focusWindow()) and applying the following tests: Fitting this into existing Qt applications is normally automatic. Qt detects menu bars and turns them into Mac native menu bars. This is the most common use of right mouse clicks, and maps to a control-click with the macOS one-button mouse support. This will map to a context menu event, for example, a menu that will display a pop-up selection. The QContextMenuEvent class provides right mouse click support for macOS applications. Also it is impossible to paint outside of a paint event so Qt::WA_PaintOutsidePaintEvent has no effect either. MacOS always double buffers the screen, therefore, the Qt::WA_PaintOnScreen attribute has no effect. QMainWindow::unifiedTitleAndToolBarOnMac. The following lists a set of useful attributes that can be used to tweak applications on macOS: The Macintosh Style Widget Gallery page contains sample images of widgets using the macOS platform theme. More documentation about Aqua is found at the macOS Human Interface Guidelines. In other words, we use Apple's own APIs for doing the rendering. Qt's widgets use HIThemes to implement the look and feel. As with Cocoa and Carbon, Qt provides widgets that look like those described in the Human Interface Descriptions. AquaĪqua is an essential part of the macOS platform. macOS terminologies and specific processes are found at. This page outlines the main issues regarding macOS support in Qt.
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