Function ImTextCharToUtf8

src/imgui/imgui.cpp:2606–2611

}

int ImTextCharToUtf8(char out_buf[5], unsigned int c)
{
    int count = ImTextCharToUtf8_inline(out_buf, 5, c);
    out_buf[count] = 0;
    return count;
}

// Not optimal but we very rarely use this function.
int ImTextCountUtf8BytesFromChar(const char* in_text, const char* in_text_end)