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I have designed a calculator but need to intercept all keyboard keys
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Shaggy
Sep 29, 1999, 3:00:00 AM9/29/99
to
I have designed a calculator program with 10 keys for the numbers plus
the usual other key for the maths part i used to have a tlabel for the
sum but i thought of having a editbox to use instead so if i press any
of the buttons on the screen it alters the editbox text or if i enter
a number from the keyboard. how can i intercept all keyboard keys from
wherever in the form you have highlighted.
the usual other key for the maths part i used to have a tlabel for the
sum but i thought of having a editbox to use instead so if i press any
of the buttons on the screen it alters the editbox text or if i enter
a number from the keyboard. how can i intercept all keyboard keys from
wherever in the form you have highlighted.
Thanks in Advance
Karl
Ingo Schulz
Sep 29, 1999, 3:00:00 AM9/29/99
to
Hi!
Try using the property KeyPreview := true (I think) from your main form.
It gets all keys from child controls. Just look for this property in the
online-help.
Ingo
grust
Sep 29, 1999, 3:00:00 AM9/29/99
to
Shaggy wrote<8FjxN9IsvOhB5PGfeQqCV754=G...@4ax.com>...
>I have designed a calculator program with 10 keys for the numbers plus
>the usual other key for the maths part i used to have a tlabel for the
>sum but i thought of having a editbox to use instead so if i press any
>of the buttons on the screen it alters the editbox text or if i enter
>a number from the keyboard. how can i intercept all keyboard keys from
>wherever in the form you have highlighted.
Use the form's OnShortCut event.
ged
Sep 29, 1999, 3:00:00 AM9/29/99
to
hi Shaggy
Form1.KeyPreview := true;
procedure TForm1.FormKeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
etc.
you'll need to set your edit box to read only.
hth
__
Ged
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