Check status of special keys/de: what changed
Revision 0 to 1. Removed lines have a minus sign; added lines have a plus sign.
Title: Check status of special keys/de
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| 1 | + | Zurück zur Seite [[code examples/de|Code Beispiele]]. | |
| 2 | + | ||
| 3 | + | Dieser Artikel beschäftigt sich mit der Windowsprogrammierung. | |
| 4 | + | ||
| 5 | + | Die Prozeduren ermitteln den Status der Tasten: | |
| 6 | + | ||
| 7 | + | - Caps Lock oder Shift Lock oder Umschaltsperre oder Feststelltaste | |
| 8 | + | - Insert oder Einfügen-Taste | |
| 9 | + | - Num Lock oder Num-Taste oder Num-Lock-Taste | |
| 10 | + | - Scroll Lock oder Rollen-Taste oder Scroll-Lock-Taste | |
| 11 | + | ||
| 12 | + | Beispiel: | |
| 13 | + | ||
| 14 | + | ``` pascal | |
| 15 | + | uses | |
| 16 | + | Windows, ...; | |
| 17 | + | ||
| 18 | + | ... | |
| 19 | + | ||
| 20 | + | function funLowOrderBitSet(intWert: integer): boolean; inline; | |
| 21 | + | begin | |
| 22 | + | Result := (intWert and 1 > 0); | |
| 23 | + | end; | |
| 24 | + | ||
| 25 | + | // ermittelt, ob die Caps-Lock-Taste aktiv ist | |
| 26 | + | function funCapsLock: boolean; | |
| 27 | + | begin | |
| 28 | + | Result := funLowOrderBitSet(GetKeyState(VK_CAPITAL)); | |
| 29 | + | end; | |
| 30 | + | ||
| 31 | + | // ermittelt, ob die Einfügen-Taste aktiv ist | |
| 32 | + | function funInsertOn: boolean; | |
| 33 | + | begin | |
| 34 | + | Result := funLowOrderBitSet(GetKeyState(VK_INSERT)); | |
| 35 | + | end; | |
| 36 | + | ||
| 37 | + | // ermittelt, ob die Num-Lock-Taste aktiv ist | |
| 38 | + | function funNumLock: boolean; | |
| 39 | + | begin | |
| 40 | + | Result := funLowOrderBitSet(GetKeyState(VK_NUMLOCK)); | |
| 41 | + | end; | |
| 42 | + | ||
| 43 | + | // ermittelt, ob die Scoll-Lock-Taste aktiv ist | |
| 44 | + | function funScrollLock: boolean; | |
| 45 | + | begin | |
| 46 | + | Result := funLowOrderBitSet(GetKeyState(VK_SCROLL)); | |
| 47 | + | end; | |
| 48 | + | ||
| 49 | + | ... | |
| 50 | + | ||
| 51 | + | ``` | |
| 52 | + | ||
| 53 | + | --- | |
| 54 | + | *From the Free Pascal wiki, page "Check status of special keys/de", as it stood on 2020-02-10 after a change by Trev, out of the wiki's dump of 2024-05-26. Copyright stays with the author who wrote it, according to the old wiki's [[Licensing]] page. If you have concerns about this material, [message the admin](/wiki-contact).* |
