On 21 August 2012 10:01, Mattias Gaertner <nc-gaert...@netcologne.de> wrote: >> > The conversion is done only when entering and exiting the OS / GUI >> > framework >> > calls. I understand this does not happen too often. >> >> I beg to differ. > > Maybe you can name some example.
OK, lets assume I'm under Linux and fpGUI uses UTF-8 internally (ideally I would like fpGUI to use the correct encoding on each platform). TfpgMemo,LoadFromFile(). TfpgMemo uses a TStringList internally, which LoadFromFile maps too. Under Linux, filenames are UTF-8 encoded, so conversion occurs because TStringList uses UTF-16 (as per the FPC 2.7.1 suggestions) for the filename variable, and for all the file access routines. The file contains UTF-8 encoded text. They are now converted to UTF-16 text to be stored internally in the TStringList. fpGUI now needs to display that text, so calls the UTF-8 X11 API's, so another conversion is required. This is a simple example, but look at all the conversions already. Now if UnicodeString uses the correct encoding on each platform, the conversions would be zero! -- Regards, - Graeme - _______________________________________________ fpGUI - a cross-platform Free Pascal GUI toolkit http://fpgui.sourceforge.net _______________________________________________ fpc-devel maillist - fpc-devel@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-devel
