Chad Johnson wrote:
I can't figure out how to change the background color of a range of
text. I've tried and tried and tried and tried and tried and it just
does not work at all. Could somebody give me an example of how to do
this or if it's not possible just tell me.
I really need a response.
While it sounds like you are having a rough time, it would help if you
gave some context... what approaches have you tried, what *did* happen
even if they didn't work the way you want, etc.
As it happens, I can see that you made a "Scintilla Feature Request"
that is presumably talking about this too.
Anyway, offhand (and assuming you are not writing or working with a
lexer), the way I would do this would be pretty much like setting up
Scintilla to work with a lexer: define the display and font attributes
of a style or styles using SCI_STYLESETFORE, SCI_STYLESETBACK,
SCI_STYLESETBOLD, etc. Then just do a SCI_STARTSTYLING followed by
some number of SCI_SETSTYLING calls using "styles" you have defined
above.
I have not tried doing "raw" use of the styling machinery like this,
but this is about what it should look like. A refinement if you are
going to define more than a couple of styles would be to define
"common" attributes for the "magic" STYLE_DEFAULT, and then do a
SCI_STYLECLEARALL to set all styles to these values - then use the
"SCI_STYLESET*" calls to set the differences.
Robert Roessler
[EMAIL PROTECTED]
http://www.rftp.com
I forgot to set it so I receive the e-mails, so I didn't see the
response till I visited the site - so that's why this is in a new thread.
So I was trying to figure out how to change the background color of a
range of text in a scintilla text control - namely the wxStyledTextCtrl
for wxWidgets. I'm making a Bible program and I want to highlight
specified verses.
Today I tried the following:
StyleSetBackground(0, wxColour(255, 255, 0);
StartStyling(10, 0);
SetStyling(5, 0);
to style 5 characters starting at position 10 in yellow. However, all
text became yellow (but the background of the control stayed white).
I also tried using SCI_STYLESETBACK directly with no luck.
I even tried defining my own styles using style indexes above and below 32:
StyleSetBackground(5, wxColour(255, 255, 0);
StartStyling(10, 0);
SetStyling(5, 5);
and
StyleSetBackground(100, wxColour(255, 255, 0);
StartStyling(10, 0);
SetStyling(5, 100);
to no avail. It just does not work. I'm lost and I really want this to
work - if I can't get this to work I basically have to scrap my
application - http://aletheia.sourceforge.net. Can you give me some
example code please? I'll try what Robert suggested in the meantime.
OK, a few more details: the "styleset*" stuff is setting attributes of
"styles", which are really just integer ids of collections of...
drawing attributes - fonts, colors, etc. :)
These integers are what goes into the style bytes that are paired with
every text byte in a Scintilla buffer. So, a typical "coloring"
operation might be (AFTER your style(s) are defined with the styleset*
calls):
1) do a SCI_STARTSTYLING with the POSITION of the first char you want
to color and the MASK specifying which style bits you want to allow to
change - for you, this should probably ALWAYS be 31 (or 0x1f).
2) do a SCI_SETSTYLING with the COUNT of chars to color and the STYLE
to set this number of style bytes to
3) ... choose a new position and style and go back to 1) ... that's it
It is IMPORTANT to NOT set the mask to 0 - since that will not allow
ANY style info to change. :)
Note that in real life, there are times when the styling mask will be
something other than 31 (0x1f)... but that is for another day.
Robert Roessler
[EMAIL PROTECTED]
http://www.rftp.com
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