C#在运行时修改控制台字体、字体大小？

Question

我正在创建rougelike 并确保我的游戏正确显示，我想在运行时更改控制台字体和字体大小。

我对编程和 c# 非常陌生，所以我希望可以用我或其他任何人都可以轻松实现的方式来解释这一点。

resource 列出了 CONSOLE_FONT_INFOEX 结构的完整语法：

typedef struct _CONSOLE_FONT_INFOEX {
  ULONG cbSize;
  DWORD nFont;
  COORD dwFontSize;
  UINT  FontFamily;
  UINT  FontWeight;
  WCHAR FaceName[LF_FACESIZE];
} CONSOLE_FONT_INFOEX, *PCONSOLE_FONT_INFOEX;

具体来说，我想在运行时将控制台字体更改为 NSimSum 并将字体大小更改为 32。

编辑 1：我能否解释一下如何使用来自 this 帖子的 SetCurrentConsoleFontEx function。我不明白该函数需要处于什么上下文中。我尝试了Console.SetCurrentConsoleFontEx，但 vs 没有给我任何选项。

编辑 2：this 论坛帖子似乎详细介绍了一种更改字体大小的简单方法，但它是特定于 c++ 的吗？

void setFontSize(int FontSize)
{
    CONSOLE_FONT_INFOEX info = {0};
    info.cbSize       = sizeof(info);
    info.dwFontSize.Y = FontSize; // leave X as zero
    info.FontWeight   = FW_NORMAL;
    wcscpy(info.FaceName, L"Lucida Console");
    SetCurrentConsoleFontEx(GetStdHandle(STD_OUTPUT_HANDLE), NULL, &info);
}

Answer 1

你试过了吗

using System;
using System.Runtime.InteropServices;

public class Example
{
   [DllImport("kernel32.dll", SetLastError = true)]
   static extern IntPtr GetStdHandle(int nStdHandle);

   [DllImport("kernel32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
   static extern bool GetCurrentConsoleFontEx(
          IntPtr consoleOutput, 
          bool maximumWindow,
          ref CONSOLE_FONT_INFO_EX lpConsoleCurrentFontEx);

   [DllImport("kernel32.dll", SetLastError = true)]
   static extern bool SetCurrentConsoleFontEx(
          IntPtr consoleOutput, 
          bool maximumWindow,
          CONSOLE_FONT_INFO_EX consoleCurrentFontEx);

   private const int STD_OUTPUT_HANDLE = -11;
   private const int TMPF_TRUETYPE = 4;
   private const int LF_FACESIZE = 32;
   private static IntPtr INVALID_HANDLE_VALUE = new IntPtr(-1);

   public static unsafe void Main()
   {
      string fontName = "Lucida Console";
      IntPtr hnd = GetStdHandle(STD_OUTPUT_HANDLE);
      if (hnd != INVALID_HANDLE_VALUE) {
         CONSOLE_FONT_INFO_EX info = new CONSOLE_FONT_INFO_EX();
         info.cbSize = (uint) Marshal.SizeOf(info);
         bool tt = false;
         // First determine whether there's already a TrueType font.
         if (GetCurrentConsoleFontEx(hnd, false, ref info)) {
            tt = (info.FontFamily & TMPF_TRUETYPE) == TMPF_TRUETYPE;
            if (tt) {
               Console.WriteLine("The console already is using a TrueType font.");
               return;
            }
            // Set console font to Lucida Console.
            CONSOLE_FONT_INFO_EX newInfo = new CONSOLE_FONT_INFO_EX();
            newInfo.cbSize = (uint) Marshal.SizeOf(newInfo);          
            newInfo.FontFamily = TMPF_TRUETYPE;
            IntPtr ptr = new IntPtr(newInfo.FaceName);
            Marshal.Copy(fontName.ToCharArray(), 0, ptr, fontName.Length);
            // Get some settings from current font.
            newInfo.dwFontSize = new COORD(info.dwFontSize.X, info.dwFontSize.Y);
            newInfo.FontWeight = info.FontWeight;
            SetCurrentConsoleFontEx(hnd, false, newInfo);
         }
      }    
    }

   [StructLayout(LayoutKind.Sequential)]
   internal struct COORD
   {
      internal short X;
      internal short Y;

      internal COORD(short x, short y)
      {
         X = x;
         Y = y;
      }
   }

   [StructLayout(LayoutKind.Sequential)]
   internal unsafe struct CONSOLE_FONT_INFO_EX 
   {
      internal uint cbSize;
      internal uint nFont;
      internal COORD dwFontSize;
      internal int FontFamily;
      internal int FontWeight;
      internal fixed char FaceName[LF_FACESIZE];
   } 
}

更多详情请参考https://msdn.microsoft.com/en-us/library/system.console(v=vs.110).aspx

Answer 2

您可能会考虑的另一种选择是创建一个 winforms 应用程序并改用 RichTextBox。我想这取决于您需要多少依赖任何内置控制台功能。

请注意使用一些自定义函数来更轻松地编写彩色文本。

你可以试试这样的：

public partial class Form1 : Form
{
    public Form1()
    {
        InitializeComponent();
    }

    RichTextBox console = new RichTextBox();

    private void Form1_Load(object sender, EventArgs e)
    {
        console.Size = this.ClientSize;
        console.Top = 0;
        console.Left = 0;
        console.BackColor = Color.Black;
        console.ForeColor = Color.White;
        console.WordWrap = false;
        console.Font = new Font("Consolas", 12);            

        this.Controls.Add(console);
        this.Resize += Form1_Resize;

        DrawDiagram();
    }

    private void DrawDiagram()
    {
        WriteLine("The djinni speaks. \"I am in your debt. I will grant one wish!\"--More--\n");
        Dot(7);
        Diamond(2);
        WriteLine("....╔═══════╗..╔═╗");
        Dot(8);
        Diamond(2);
        WriteLine("...║..|....║..║.╠══════╦══════╗");
        Dot(9);
        Diamond(2);
        Write("..║.|.....║..║.║      ║.");
        Write('&', Color.DarkRed);
        Dot(4);
        WriteLine("║");
    }

    private void Dot(int qty)
    {
        Write('.', qty);
    }

    private void WriteLine(string text)
    {
        Write($"{text}\n");
    }

    private void Diamond(int qty)
    {
        Write('♦', qty, Color.Blue);
    }

    private void Write(char character, Color color)
    {
        Write(character, 1, color);
    }

    private void Write(char character, int qty)
    {
        Write(character, qty, Color.White);
    }

    private void Write(char character, int qty, Color color)
    {
        Write(new string(character, qty), color);
    }

    private void Write(string text)
    {
        Write(text, Color.White);
    }

    private void Write(string text, Color color)
    {
        var originalColor = console.SelectionColor;
        console.SelectionColor = color;
        console.AppendText(text);
        console.SelectionColor = originalColor;
    }

    private void Form1_Resize(object sender, EventArgs e)
    {
        console.Size = this.ClientSize;
    }
}

输出