c++ - 在 C++ 中为指定的字符着色

Question

我有一个扫雷主机游戏，我想让它更漂亮一点。我从互联网上找到了一些着色库。并使用它们。图书馆是：

// ConsoleColor.h

#pragma once
#include <iostream>
#include <windows.h>

inline std::ostream& blue(std::ostream &s)
{
    HANDLE hStdout = GetStdHandle(STD_OUTPUT_HANDLE); 
    SetConsoleTextAttribute(hStdout, FOREGROUND_BLUE
              |FOREGROUND_GREEN|FOREGROUND_INTENSITY);
    return s;
}

inline std::ostream& red(std::ostream &s)
{
    HANDLE hStdout = GetStdHandle(STD_OUTPUT_HANDLE); 
    SetConsoleTextAttribute(hStdout, 
                FOREGROUND_RED|FOREGROUND_INTENSITY);
    return s;
}

inline std::ostream& green(std::ostream &s)
{
    HANDLE hStdout = GetStdHandle(STD_OUTPUT_HANDLE); 
    SetConsoleTextAttribute(hStdout, 
              FOREGROUND_GREEN|FOREGROUND_INTENSITY);
    return s;
}

inline std::ostream& yellow(std::ostream &s)
{
    HANDLE hStdout = GetStdHandle(STD_OUTPUT_HANDLE); 
    SetConsoleTextAttribute(hStdout, 
         FOREGROUND_GREEN|FOREGROUND_RED|FOREGROUND_INTENSITY);
    return s;
}

inline std::ostream& white(std::ostream &s)
{
    HANDLE hStdout = GetStdHandle(STD_OUTPUT_HANDLE); 
    SetConsoleTextAttribute(hStdout, 
       FOREGROUND_RED|FOREGROUND_GREEN|FOREGROUND_BLUE);
    return s;
}

struct color {
    color(WORD attribute):m_color(attribute){};
    WORD m_color;
};

template <class _Elem, class _Traits>
std::basic_ostream<_Elem,_Traits>& 
      operator<<(std::basic_ostream<_Elem,_Traits>& i, color& c)
{
    HANDLE hStdout=GetStdHandle(STD_OUTPUT_HANDLE); 
    SetConsoleTextAttribute(hStdout,c.m_color);
    return i;
}

它工作正常，但我有一个问题。反正有没有给cpp中的字符着色？例如，我想将我的程序的所有“X”打印为红色。有可能吗？谢谢你的帮助

标签： c++winapi

Answer 1

是的，您所要求的完全有可能，尽管似乎只有少数人对图书馆的适用部分了解很多。使用操纵器设置高光颜色会增加一些工作量，但不是很多。代码可能如下所示：

#include <iostream>
#include <windows.h>

class attribute { 
    DWORD attrib;
public:
    attribute(DWORD attrib) : attrib(attrib) {}
    DWORD operator()() const { return attrib; }
};

class outbuf : public std::streambuf {
    HANDLE h;
    DWORD default_color = FOREGROUND_RED|FOREGROUND_GREEN|FOREGROUND_BLUE;
    DWORD highlight_color = FOREGROUND_GREEN;  
public:
    outbuf(HANDLE h) : h(h) {
        SetConsoleTextAttribute(h, default_color);
    }

    void set_highlight(DWORD color) { highlight_color = color; }

protected:
    virtual int_type overflow(int_type c) override {
        if (c != EOF) {
            if (c == 'x') {
                SetConsoleTextAttribute(h, highlight_color);
                DWORD written;
                WriteConsole(h, &c, 1, &written, nullptr);
                SetConsoleTextAttribute(h, default_color);
            }
            else {
                DWORD written;
                WriteConsole(h, &c, 1, &written, nullptr);
            }
        }
        return c;
    }
};

std::ostream &operator<<(std::ostream &os, attribute a) { 
    outbuf *out = dynamic_cast<outbuf *>(os.rdbuf());
    if (out) {
        out->set_highlight(a());
    }
    return os;
}

int main() { 
    outbuf buf(GetStdHandle(STD_OUTPUT_HANDLE));

    attribute red{FOREGROUND_RED};
    attribute blue{FOREGROUND_BLUE | FOREGROUND_INTENSITY};

    std::cout.rdbuf(&buf);
    std::cout << "oxen\n" << red << "axis\n" << blue << "waxy";
}

结果：