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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 | } |
Began life as a copy of #1020885
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| 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): | No |
| Created/modified: | 2022-03-07 14:35:01 |
| Source code size: | 877 bytes / 24 lines |
| Pitched / IR pitched: | No / No |
| Views / Downloads: | 135 / 199 |
| Version history: | 3 change(s) |
| Referenced in: | [show references] |