pyobjc_cocoa_macos_window_with_hello_world_label.py

1from Cocoa import (
2    NSApplication,
3    NSApp,
4    NSWindow,
5    NSWindowStyleMaskTitled,
6    NSWindowStyleMaskClosable,
7    NSWindowStyleMaskResizable,
8    NSBackingStoreBuffered,
9    NSRect,
10    NSPoint,
11    NSSize,
12    NSTextField,
13)
14from PyObjCTools import AppHelper
15
16class AppDelegate:
17    def applicationDidFinishLaunching_(self, notification):
18        # Create a window
19        win = NSWindow.alloc().initWithContentRect_styleMask_backing_defer_(
20            NSRect(NSPoint(100, 100), NSSize(300, 200)),
21            NSWindowStyleMaskTitled | NSWindowStyleMaskClosable | NSWindowStyleMaskResizable,
22            NSBackingStoreBuffered,
23            False,
24        )
25        win.setTitle_("PyObjC Quickstart")
26        
27        # Create a text label
28        label = NSTextField.labelWithString_("Hello from PyObjC!")
29        label.setFrameOrigin_(NSPoint(80, 90))
30        
31        win.contentView().addSubview_(label)
32        win.makeKeyAndOrderFront_(None)
33        print("Window should be visible now.")
34
35def main():
36    app = NSApplication.sharedApplication()
37    delegate = AppDelegate()
38    app.setDelegate_(delegate)
39    AppHelper.runEventLoop()
40
41if __name__ == "__main__":
42    main()