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Key parameter in OnKeyUp is wrong

Posted on 2002-06-24
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Last Modified: 2012-05-04
In a delphi OnKeyUp event, when I press the ';' on the keyboard the 'Key' parameter is set as 186 which corresponds to the character: 'º'. I have also noticed discrepencies with the ',' key. What's going on and how can I get find out accurately which key has been pressed?
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Question by:Siband
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LVL 27

Expert Comment

by:kretzschmar
ID: 7103663
i guess that could
depend on the keyboardlayout- and/or countrysetting
of the os

do you have a special keyboardlayout and/or country setting?
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LVL 27

Expert Comment

by:kretzschmar
ID: 7103689
next guess :-)

subtract just 127 from your value,
there may a flag set (bit 8?),
don't know the meaning at the moment
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Author Comment

by:Siband
ID: 7103730
Subtracting 127 works for the ';' key but it doesn't work for the ',' key. A comma should be 44 but the value of Key is 188 in this case! I am not using a special keyboard as far as I know and my windows keyboard setting is 'English (United Kingdom)' which is correct.
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Accepted Solution

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robert_marquardt earned 150 total points
ID: 7103886
This is the Scancode not the ASCII-Key. You will have to compare to the VK_ constants. They only correspond with ASCII for the alphanumeric keys.
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Author Comment

by:Siband
ID: 7104019
Thanks, That cirtainly answered the question. I have only given a B grading because I still don't know where to find a comprehensive list of the VK_ constants. I had to poke around to find a few in the Windows.pas file but it was cirtainly not comprehensive and didn't contain the ones for ';' and ','. I thank you for pointing me in the right direction however.
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