需要帮助来设置 RichEdit

Question

I'm trying to set the following text in RichEdit (v2.0 I guess, as I use "Riched20.dll" library):

{\\rtf1Привет!\\par{ \\i This } is super {\\b text}.\\par}

The first problem is wrong symbols instead of non-latin text Привет , the second problem is bold text section {\\\\b text} , which is rendered as non bold. Here is the screenshot:

Visual Studio set up to "Use Unicode Character Set" (the app I'm working on is already setuped this way, and I'm still quiet bad in how Win encodings work). I use ordinar (eg not wide char) std::string, as wide char classes don't work for my code - that was my previous question .

Here is the code snippet:

    DWORD CALLBACK EditStreamInCallback(DWORD_PTR dwCookie, LPBYTE pbBuff, LONG cb, LONG* pcb)
    {
        std::stringstream* rtf = (std::stringstream*)dwCookie;
        *pcb                   = rtf->readsome((char*)pbBuff, cb);
        return 0;
    }

    // ...
    auto hwndEdit = CreateRichEdit(hWnd, 100, 100, 300, 300, hInstance);
    std::stringstream rtf("{\\rtf1Привет!\\par{ \\i This } is super {\\b text}.\\par}");

    EDITSTREAM es  = { 0 };
    es.dwCookie    = (DWORD_PTR)&rtf;
    es.pfnCallback = &EditStreamInCallback;

    SendMessage(hwndEdit, EM_STREAMIN, SF_RTF, (LPARAM)&es);

Update: The end goal is: get some RTF-string (which may consists of unicode(?) text, links, etc.) from JSON like:

{
    "text": "{\\rtf1Привет!\\par{ \\i This } is super {\\b text}.\\par}"
}

, show it, handle clicks at hyperlinks, and almost certainly to modify specific symbols (the specific symbol is custom symbol that replaces original symbol in our own modified .ttf font). I didn't read the RTF documentation yet and used given string just to check out how RichEdit contol and corresponding winapi work.

The final RTF-text would be formed in RTF-editor, I suppose. Almost certainly, the WordPad.

Answer 1

Convert your text according the RTF format specification:

std::string rtf("{\\rtf1\\deff1{\\fonttbl{\\f0\\fcharset0 Times New Roman;}{\\f1\\fcharset0 Segoe UI;}}{\\lang1033{\\f1{\\ltrch\\u1055?\\u1088?\\u1080?\\u1074?\\u1077?\\u1090?!}\\li0\\ri0\\sa0\\sb0\\fi0\\ql\\par}{\\f1{\\i\\ltrch This }{\\ltrch is super }{\\b\\ltrch text}{\\ltrch .}\\li0\\ri0\\sa0\\sb0\\fi0\\ql\\par}}}");

std::stringstream ss(rtf);
EDITSTREAM es = { 0 };
es.dwCookie = (DWORD_PTR)&ss;
es.pfnCallback = &EditStreamInCallback;
SendMessage(richedit, EM_STREAMIN, SF_RTF, (LPARAM)&es);

This rtf string produces the following text:

List of main control words used in the rtf string above (according the Rich Text Format (RTF) Version 1.5 Specification):

• \\rtf1
  The RTF document Specification version is 1.

• \\deffN
  The \\deff control word specified the default font number.

• \\fonttbl
  The \\fonttbl control word introduces the font table group.

• \\lang1033
  Applies a language to a character. N is a number corresponding to a language.

In the project settings you can define Character Set as Use Unicode character , Use Multi-Byte Character or Not Set , does not matter for this case.