RichTextBox use to retrieve Text property in C++

Question

I am using a hidden RichTextBox to retrieve Text property from a RichEditCtrl. rtb->Text; returns the text portion of either English of national languages – just great!

But I need this text in \u12232? \u32232? instead of national characters and symbols. to work with my db and RichEditCtrl. Any idea how to get from “пассажирским поездом Невский” to “\u12415?\u12395?\u23554?\u20219?\u30456?\u35527?\u21729? (where each national character is represented as “\u23232?”

If you have, that would be great. I am using visual studio 2008 C++ combination of MFC and managed code.

Cheers and have a wonderful weekend

Answer 1

If you need a System::String as an output as well, then something like this would do it:

String^ s = rtb->Text;
StringBuilder^ sb = gcnew StringBuilder(s->Length);
for (int i = 0; i < s->Length; ++i) {
    sb->AppendFormat("\u{0:D5}?", (int)s[i]);
}
String^ result = s->ToString();

By the way, are you sure the format is as described? \u is a traditional Escape sequence for a hexadecimal Unicode codepoint, exactly 4 hex digits long, e.g. \u0F3A. It's also not normally followed by ?. If you actually want that, format specifier {0:X4} should do the trick.

Answer 2

You don't need to use escaping to put formatted Unicode in a RichText control. You can use UTF-8. See my answer here: Unicode RTF text in RichEdit.

I'm not sure what your restrictions are on your database, but maybe you can use UTF-8 there too.