pyobjc_cocoa_hello_world_window_with_label.py

1from Cocoa import (
2    NSApplication,
3    NSApp,
4    NSWindow,
5    NSWindowStyleMaskTitled,
6    NSWindowStyleMaskClosable,
7    NSWindowStyleMaskResizable,
8    NSBackingStoreBuffered,
9    NSTextField,
10    NSRect,
11    NSPoint,
12    NSSize,
13)
14from PyObjCTools import AppHelper
15
16
17class AppDelegate:
18    def applicationDidFinishLaunching_(self, notification):
19        # Create a window
20        rect = NSRect(NSPoint(100, 100), NSSize(300, 200))
21        mask = (
22            NSWindowStyleMaskTitled
23            | NSWindowStyleMaskClosable
24            | NSWindowStyleMaskResizable
25        )
26        self.window = NSWindow.alloc().initWithContentRect_styleMask_backing_defer_(
27            rect, mask, NSBackingStoreBuffered, False
28        )
29
30        # Create a label
31        label = NSTextField.labelWithString_("Hello World")
32        label.setFrameOrigin_(NSPoint(100, 90))
33
34        # Add label to window and display
35        self.window.contentView().addSubview_(label)
36        self.window.makeKeyAndOrderFront_(None)
37        print("Window should be visible now.")
38
39
40def main():
41    app = NSApplication.sharedApplication()
42    delegate = AppDelegate()
43    app.setDelegate_(delegate)
44    AppHelper.runEventLoop()
45
46
47if __name__ == "__main__":
48    main()