MakeKeyAndOrderFront

makeKeyAndOrderFront is an instance method in the Cocoa framework for macOS that makes a window the key window and places it in front of other windows in the application. The key window is the one that receives keyboard input, while ordering front moves the window above its siblings in the window stack. If the window is hidden or minimized, invoking this method typically shows or restores it and brings it to the front, then makes it the key window.

Signature and usage: In Objective-C, the method is declared as - (void)makeKeyAndOrderFront:(id)sender;. In Swift, it is called as window.makeKeyAndOrderFront(sender) (or window.makeKeyAndOrderFront(nil) if you have no sender). It is commonly used when presenting a document window, a preferences panel, or any window that should become the active window in response to a user action.

Notes and considerations: This method does not automatically activate the entire application if the app is not currently active; you may need to call NSApp.activateIgnoringOtherApps(true) to bring the application to the foreground before or after making the window key and front. If another window is modal or a sheet is presented, the behavior may be influenced by those states or by window levels.

Related methods: orderFront:, orderFrontRegardless:, makeKeyWindow, and app activation methods such as NSApp.activateIgnoringOtherApps:. Example: [myWindow makeKeyAndOrderFront:nil];.