如何在Qt中创建类似Textmate的侧面板

Question

How can I create a side panel like the file explorer in Textmate using C++/Qt? To be more precise like the left side panel in the image below:

_{(source: garzaincredible.com )}

The closest thing to my need seems to be QDockWidget , but I still didn't figure out how to use it.

Answer 1

That's called a "Drawer". In Qt, there's a special Qt::WindowFlags flag for this: Qt::Drawer . The intention is to use this flag on a QDockWidget:

QDockWidget* dock = new QDockWidget(parent, Qt::Drawer);

This will create a Cocoa drawer for the dock widget. You don't need to make sure that Qt::Drawer is only used on OS X; that flag is simply ignored on other platforms, so you can specify it unconditionally.