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Creating and converting icons
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Icons are bitmaps that may contain transparency information. Under X, icons are
usually created from XPM files, which may be loaded from a file or created from
data embedded in a C++ source file.< P >
Under Windows, icon files (extension .ico) may contain multiple icons for different sizes and colour
depths, and can be loaded from a file or loaded from the Windows resources compiled
into the executable.< P >
You can decide to use only XPMs on Windows and Unix, or you could use XPMs on Unix and
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Windows icons under Windows -- the latter will require some #ifdefs in your code or use of the wxICON macro.< P >
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If you are using a compiler such as Borland C++, Visual C++ or Watcom C++, you
can use the provided icon editor. However, if using Cygwin or Mingw32, there
is no icon editor so you must obtain one separately, such as < a href = "http://hotfiles.zdnet.com/cgi-bin/texis/swlib/hotfiles/info.html?fcode=00165P" > IconEdit32< / a > .< P >
To convert from XPM to BMP (which can be loaded or pasted into an icon editor to save as an ICO file),
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you can use Vadim Zeitlin's < a href = "ftp://biolpc22.york.ac.uk/pub/support/xpm2bmp.exe" > xpm2bmp.exe< / a > utility.
To convert from BMP to XPM, you can use < a href = "ftp://biolpc22.york.ac.uk/pub/support/bmp2xpm.exe" > bmp2xpm.exe< / a >
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which is actually the old wxWidgets 1.68 utility, xpmshow. You will have to edit the resulting
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file since the full path is used as the variable name, plus you may wish to specify a transparent colour e.g.:< P >
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" s None c None",
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This will indicate that the space character will be taken as the transparent colour throughout the image.< P >
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