Function VConsolePrint

PresentMon/Console.cpp:92–162

}

static void VConsolePrint(wchar_t const* format, va_list val, bool newLine)
{
    wchar_t buffer[256];
    uint32_t numChars = VPrint(buffer, _countof(buffer), format, val);

    HANDLE console = GetStdHandle(STD_OUTPUT_HANDLE);

    CONSOLE_SCREEN_BUFFER_INFO info = {};
    GetConsoleScreenBufferInfo(console, &info);
    if (info.dwSize.X == 0) {
        return;
    }

    COORD endPosition;
    endPosition.Y = gWritePosition.Y + (SHORT) ((numChars + gWritePosition.X) / info.dwSize.X);
    endPosition.X = (numChars + gWritePosition.X) % info.dwSize.X;

    SHORT finalY = endPosition.Y + (newLine ? 1 : 0);
    if (finalY >= info.dwSize.Y) {
        SHORT deltaY = finalY - info.dwSize.Y + 1;

        SMALL_RECT rect;
        rect.Left   = 0;
        rect.Top    = deltaY;
        rect.Right  = info.dwSize.X - 1;
        rect.Bottom = info.dwSize.Y - deltaY - 1;

        COORD dstPos;
        dstPos.X = 0;
        dstPos.Y = 0;

        CHAR_INFO fill;
        fill.Char.UnicodeChar = L' ';
        fill.Attributes = info.wAttributes;

        ScrollConsoleScreenBufferW(console, &rect, nullptr, dstPos, &fill);

        info.dwCursorPosition.Y -= deltaY;
        gWritePosition.Y        -= deltaY;
        endPosition.Y           -= deltaY;

        SetConsoleCursorPosition(console, info.dwCursorPosition);
    }

    if (info.dwCursorPosition.Y >= info.srWindow.Top &&
        info.dwCursorPosition.Y <= info.srWindow.Bottom &&
        finalY > info.srWindow.Bottom) {
        SHORT deltaY = finalY - info.srWindow.Bottom;

        SMALL_RECT rect;
        rect.Left   = 0;
        rect.Top    = deltaY;
        rect.Right  = 0;
        rect.Bottom = deltaY;

        SetConsoleWindowInfo(console, FALSE, &rect);
    }