减小控制台大小

Reducing console size

本文关键字:控制台      更新时间:2023-10-16

我在更改控制台大小时遇到问题。这是我的代码:

BOOL setConsole(int x, int y)
{
hStdin = GetStdHandle(STD_INPUT_HANDLE); 
hStdout = GetStdHandle(STD_OUTPUT_HANDLE); 
if (hStdin == INVALID_HANDLE_VALUE || 
    hStdout == INVALID_HANDLE_VALUE) 
{
    MessageBox(NULL, TEXT("GetStdHandle"),
        TEXT("Console Error"), MB_OK);
    return false;
}

SMALL_RECT windowSize = {0, 0, x-1, y-1};
// Change the console window size:
SetConsoleWindowInfo(hStdout, TRUE, &windowSize);
COORD c = { x, y};
//Change the internal buffer size:
SetConsoleScreenBufferSize(hStdout, c);

SetConsoleDisplayMode(hStdout,CONSOLE_FULLSCREEN_MODE, &c);
return true;
}

当我尝试放大控制台时,它工作得很好。当一个参数小于前一个参数时,没有任何反应。怎么了?

@edit:经过一些测试,我注意到,如果我一次更改一个参数,则可以调整大小(缩小)。示例(假设控制台为 100x100)

 setConsole(90,90); //dosen't work.
 setConsole(90,100);
 setConsole(90,90); // works perfectly

为什么?!

SetConsoleScreenBufferSize更改控制台内部缓冲区的大小。更改它不会影响控制台窗口范围。如果需要对控制台的可见部分(缓冲区)产生影响,请调用SetConsoleWindowInfo

窗口缓冲区不能小于内部缓冲区,减小

它也会减少内部缓冲区,但不是相反。

如果您在坐标中使用非法值调用SetConsoleScreenBufferSize(例如高度/宽度太小),那么您会得到错误,通常87 'invalid argument'.

试试这个代码:

#include <iostream>
#include <windows.h> 
using namespace std;

void SetWindow(int Width, int Height) 
{ 
    _COORD coord; 
    coord.X = Width; 
    coord.Y = Height; 
    _SMALL_RECT Rect; 
    Rect.Top = 0; 
    Rect.Left = 0; 
    Rect.Bottom = Height - 1; 
    Rect.Right = Width - 1; 
    HANDLE Handle = GetStdHandle(STD_OUTPUT_HANDLE);      // Get Handle 
    SetConsoleScreenBufferSize(Handle, coord);            // Set Buffer Size 
    SetConsoleWindowInfo(Handle, TRUE, &Rect);            // Set Window Size 
} 
int main(void) 
{     
    SetWindow(80,40);
    int dx=1,i=5,l=0;
     while(l<5)
     {
        i=i+dx;
        if( (i<1) || (i>10)){ dx=-dx; l++;}
        SetWindow(10*i,5*i);
        Sleep(100);
     }
  cout<<" nPress any key to continuen";
  cin.ignore();
  cin.get();
  return 0;
}  

晚了派对...

就 MSDN 和一些测试而言,屏幕缓冲区不能设置为小于窗口的范围,也不能将窗口的范围设置为大于屏幕缓冲区。

一个技巧是在更改缓冲区大小之前将窗口缩小到最小:

static void
set_console_size(HANDLE screen_buffer, SHORT width, SHORT height)
{
    assert(screen_buffer != NULL);
    assert(width > 0);
    assert(height > 0);
    COORD const size = { width, height };
    BOOL success;
    SMALL_RECT const minimal_window = { 0, 0, 1, 1 };
    success = SetConsoleWindowInfo(screen_buffer, TRUE, &minimal_window);
    CHECK(success);
    success = SetConsoleScreenBufferSize(screen_buffer, size);
    CHECK(success);
    SMALL_RECT const window = { 0, 0, size.X - 1, size.Y - 1 };
    success = SetConsoleWindowInfo(screen_buffer, TRUE, &window);
    CHECK(success);
}

请尝试以下代码:

system("mode 650");  

我在 12 年 10 月 15 日修改了 'Software_Designer' 提供的代码,并创建了一个命令行实用程序来设置控制台大小和滚动缓冲区。

我使用 DEV C++ (http://www.bloodshed.net/devcpp.html) 编译了它。

可执行文件包含在 https://sourceforge.net/projects/wa2l-wintools/中。我希望这有所帮助。

/*
 * consolesize.cpp - set console size and buffer dimensions
 *
 * [00] 02.07.2016 CWa  Initial Version
 *
 * inspired by: http://stackoverflow.com/questions/12900713/reducing-console-size
 *
 */
#include <iostream>
#include <windows.h> 
using namespace std;

// SetWindow(Width,Height,WidthBuffer,HeightBuffer) -- set console size and buffer dimensions
//
void SetWindow(int Width, int Height, int WidthBuffer, int HeightBuffer) { 
    _COORD coord; 
    coord.X = WidthBuffer; 
    coord.Y = HeightBuffer; 
    _SMALL_RECT Rect; 
    Rect.Top = 0; 
    Rect.Left = 0; 
    Rect.Bottom = Height - 1; 
    Rect.Right = Width - 1; 
    HANDLE Handle = GetStdHandle(STD_OUTPUT_HANDLE);      // Get Handle 
    SetConsoleScreenBufferSize(Handle, coord);            // Set Buffer Size 
    SetConsoleWindowInfo(Handle, TRUE, &Rect);            // Set Window Size 
}  // SetWindow

// main(Width,Height,WidthBuffer,HeightBuffer) -- main
//
int main(int argc, char *argv[]) {     
    int width = 80;
    int height = 25;
    int wbuffer = width + 200;
    int hbuffer = height + 1000;
    if ( argc == 5 ){
        width = atoi(argv[1]);
        height = atoi(argv[2]);
        wbuffer = atoi(argv[3]);
        hbuffer = atoi(argv[4]);
    } else if ( argc > 1 ) {
        cout << "Usage: " << argv[0] << " [ width height bufferwidth bufferheight ]" << endl << endl;
        cout << "  Where" << endl;
        cout << "    width            console width" << endl;
        cout << "    height           console height" << endl;
        cout << "    bufferwidth      scroll buffer width" << endl;
        cout << "    bufferheight     scroll buffer height" << endl;
        return 4;
    }    
    SetWindow(width,height,wbuffer,hbuffer);
    return 0;
} 

经过一天左右的研究,我终于破解了这个密码。 发现了一些 MS 文档中没有的内容。 我们很多人都知道,如果控制台窗口缓冲区不够大,对 SetConsoleWindowInfo() 的调用将失败,但还有更多。 请看我的回答 这里.