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Caps lock on/off

Posted on 1998-01-05
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Last Modified: 2010-04-04
How do I turn Caps lock, scroll lock and num lock on or off
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Question by:koger
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5 Comments
 
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Accepted Solution

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ronit051397 earned 80 total points
ID: 1355276
Here is some code:

procedure TForm1.Button1Click(Sender: TObject);
begin
IF GetKeyState(VK_CAPITAL)=0 THEN showmessage('Caps lock is Off');//1=ON
IF GetKeyState(VK_NUMLOCK)=0 THEN showmessage('Num lock is Off');
IF GetKeyState(VK_SCROLL)=0 THEN showmessage('Scroll lock is Off');
//we send key accelerators
keybd_event(VK_CAPITAL,0,0,0);
keybd_event(VK_CAPITAL,0,KEYEVENTF_KEYUP,0);
keybd_event(VK_NUMLOCK,0,0,0);
keybd_event(VK_NUMLOCK,0,KEYEVENTF_KEYUP,0);
keybd_event(VK_SCROLL,0,0,0);
keybd_event(VK_SCROLL,0,KEYEVENTF_KEYUP,0);
end;

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Author Comment

by:koger
ID: 1355277
I don't seem to get the code to work properly in Win95, but under Win NT, it works great, do you have a clue why this doesn't work.
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LVL 5

Expert Comment

by:ronit051397
ID: 1355278
I have also tested it under WinNT. As for Win95 I'll Check.
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LVL 5

Expert Comment

by:ronit051397
ID: 1355279
I checked on win95 and only the numlock didn't work but the others did. I Don't know why this is happening.
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Author Comment

by:koger
ID: 1355280
The same happent to me, guees thats just the Win95 is, I will try asking some Win95 experts, thanks for your help.
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