tempAddGlobalCtrlKeyListener - add a global AWT listener trying to detect whether the ctrl key is currently pressed [1034716]

< > BotCompany Repo | #1034716 // tempAddGlobalCtrlKeyListener - add a global AWT listener trying to detect whether the ctrl key is currently pressed

JavaX fragment (include) [tags: use-pretranspiled]

// This works when the ctrl key is pressed/released when a Swing window
// is in focus or the mouse is inside a Swing window.
// If you press ctrl before the program starts and the mouse is never
// inside any of the windows, the key press will not be registered.

static AutoCloseable tempAddGlobalCtrlKeyListener(IVF1<Bool> onStatusChanged) {
  AWTEventListener l = new AWTEventListener {
    Bool status;
    
    public void eventDispatched(AWTEvent evt) {
      if (evt cast InputEvent) {
        Bool b = evt.isControlDown();
        if (!eq(b, status))
          pcallF_typed(onStatusChanged, status = b);
      }
    }
  };
  
  Toolkit.getDefaultToolkit().addAWTEventListener(l,
    AWTEvent.KEY_EVENT_MASK |
    AWTEvent.MOUSE_EVENT_MASK |
    AWTEvent.MOUSE_MOTION_EVENT_MASK);
  ret -> Toolkit.getDefaultToolkit().removeAWTEventListener(l);
}

Author comment

Began life as a copy of #1020885

Travelled to 4 computer(s): bhatertpkbcr, ekrmjmnbrukm, mowyntqkapby, mqqgnosmbjvj

Snippet ID:

#1034716

Snippet name:

tempAddGlobalCtrlKeyListener - add a global AWT listener trying to detect whether the ctrl key is currently pressed

Eternal ID of this version:

#1034716/4

Text MD5:

59236176ea5d42fc583a925e399eaa52

Transpilation MD5:

a92c438ecb587cd2b995d0b568f77fca

Author:

stefan

Category:

javax / gui

Type:

JavaX fragment (include)

Public (visible to everyone):

Yes

Archived (hidden from active list):

Created/modified:

2022-03-07 14:35:01

Source code size:

877 bytes / 24 lines

Pitched / IR pitched:

No / No

Views / Downloads:

403 / 516

Version history:

3 change(s)

Referenced in:

[show references]

1	// This works when the ctrl key is pressed/released when a Swing window
2	// is in focus or the mouse is inside a Swing window.
3	// If you press ctrl before the program starts and the mouse is never
4	// inside any of the windows, the key press will not be registered.
5
6	static AutoCloseable tempAddGlobalCtrlKeyListener(IVF1<Bool> onStatusChanged) {
7	AWTEventListener l = new AWTEventListener {
8	Bool status;
9
10	public void eventDispatched(AWTEvent evt) {
11	if (evt cast InputEvent) {
12	Bool b = evt.isControlDown();
13	if (!eq(b, status))
14	pcallF_typed(onStatusChanged, status = b);
15	}
16	}
17	};
18
19	Toolkit.getDefaultToolkit().addAWTEventListener(l,
20	AWTEvent.KEY_EVENT_MASK \|
21	AWTEvent.MOUSE_EVENT_MASK \|
22	AWTEvent.MOUSE_MOTION_EVENT_MASK);
23	ret -> Toolkit.getDefaultToolkit().removeAWTEventListener(l);
24	}