How to tell it's a text file or a rich text file in CRichEditView?

[davilism]

Hi, all, I want to read text files for processing in my CRichEditView text editor. If I don't set the attribute m_bRTF to FALSE when loading, it can't read other text files besides my own. How to test for other text files?

[Bill Wilson]

rtf files are, of course, text files. There is nothing absolutely definitive. There are some 99.9999% tests you can use. Here is a sample of an rtf file. (it contains a string of 10 "a" characters. you could check for some of the first chars maybe "{\rtf" would be specific enough and yet general enough for all versions. I don't know if there are files with {\rft0 or {\rtf2.

{\rtf1\ansi\ansicpg1252\uc1 \deff0\deflang1033\deflangfe1033{\fonttbl{\f0\froman\fcharset0\fprq2{\*\panose 02020603050405020304}Times New Roman{\*\falt Times};}{\f55\froman\fcharset238\fprq2 Times New Roman CE{\*\falt Times};}
{\f56\froman\fcharset204\fprq2 Times New Roman Cyr{\*\falt Times};}{\f58\froman\fcharset161\fprq2 Times New Roman Greek{\*\falt Times};}{\f59\froman\fcharset162\fprq2 Times New Roman Tur{\*\falt Times};}
{\f60\froman\fcharset186\fprq2 Times New Roman Baltic{\*\falt Times};}}{\colortbl;\red0\green0\blue0;\red0\green0\blue255;\red0\green255\blue255;\red0\green255\blue0;\red255\green0\blue255;\red255\green0\blue0;\red255\green255\blue0;
\red255\green255\blue255;\red0\green0\blue128;\red0\green128\blue128;\red0\green128\blue0;\red128\green0\blue128;\red128\green0\blue0;\red128\green128\blue0;\red128\green128\blue128;\red192\green192\blue192;}{\stylesheet{
\nowidctlpar\widctlpar\adjustright \fs20\cgrid \snext0 Normal;}{\*\cs10 \additive Default Paragraph Font;}}{\info{\title sfdsdfsdsdfsdff}{\author WilsonB5}{\operator WilsonB5}{\creatim\yr2001\mo12\dy12\hr15\min41}{\revtim\yr2001\mo12\dy12\hr15\min42}
{\version2}{\edmins0}{\nofpages1}{\nofwords0}{\nofchars0}{\*\company }{\nofcharsws0}{\vern71}}\widowctrl\ftnbj\aenddoc\formshade\viewkind4\viewscale110\pgbrdrhead\pgbrdrfoot \fet0\sectd \linex0\endnhere\sectdefaultcl {\*\pnseclvl1
\pnucrm\pnstart1\pnindent720\pnhang{\pntxta .}}{\*\pnseclvl2\pnucltr\pnstart1\pnindent720\pnhang{\pntxta .}}{\*\pnseclvl3\pndec\pnstart1\pnindent720\pnhang{\pntxta .}}{\*\pnseclvl4\pnlcltr\pnstart1\pnindent720\pnhang{\pntxta )}}{\*\pnseclvl5
\pndec\pnstart1\pnindent720\pnhang{\pntxtb (}{\pntxta )}}{\*\pnseclvl6\pnlcltr\pnstart1\pnindent720\pnhang{\pntxtb (}{\pntxta )}}{\*\pnseclvl7\pnlcrm\pnstart1\pnindent720\pnhang{\pntxtb (}{\pntxta )}}{\*\pnseclvl8\pnlcltr\pnstart1\pnindent720\pnhang
{\pntxtb (}{\pntxta )}}{\*\pnseclvl9\pnlcrm\pnstart1\pnindent720\pnhang{\pntxtb (}{\pntxta )}}\pard\plain \nowidctlpar\widctlpar\adjustright \fs20\cgrid {aaaaaaaaaa
\par }}

Hope this helps, Bill