打开一个文件, 如何判断文件是否存在 即 如果文件存在则执行打开操作
------解决方案--------------------------------------------------------
BaflUtils::FileExists()
------解决方案--------------------------------------------------------
ConeUtils::FileExists()
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RFs& fs = CCoeEnv::Static()->FsSession();
TFileName fileName;
fileName.Append(_L("C:\\test\\test.txt"));
RFileWriteStream writeStream;
if(!BaflUtils::FileExists(fs,fileName))
{
User::LeaveIfError(writeStream.Create(fs, fileName, EFileWrite));
}
else{
writeStream.Open(fs, fileName, EFileWrite);
}