Special mathematic chars in *.Caption
lazarus / 9-Editor

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Rozky · 2008-04-29 13:01

Hi, I make a calculator and I can't do pi or sqrt like chars (√, π)
into the Button.caption.. It shows me only: ?. What is wrong?

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cyber_python · 2008-04-29 15:31

I don't really know if the following works but give it a try just in
case ....
- Set the font to one that supports those characters
If you still cant set the desired symbols then :
- Open a character map utility (I think there is one in windows under
Start -> Utilities -> Character Map)
- Find the corresponding character code (e.g. 134)
Assign it to Button.Caption like this :
Button.Caption := #134;

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Leledumbo · 2008-04-30 05:35

Just guessing, are those characters part of ASCII? or Unicode? If
Unicode and you're on Windows, then you need to recompile LCL with
-dWindowsUnicodeSupport.

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Rozky · 2008-04-30 12:38

I tried both methods from cyber_python.. Everything goes, BUT!!! only
in memo (memo.text). In Button.caption it dosn't work . I tried all
charset and in my opinion into the Button.caption goes only charset:
Default and symbol_charset, nothing more  Can you help me again?

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cyber_python · 2008-04-30 14:20

You could use a TBitBtn instead of a TButton and set the caption to
nothing and the glyph property to an image that has the desired
symbol.