Question

我在改变控制台尺寸方面遇到了问题。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。有什么问题？

@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？！

Answer 1

SetConsoleScreenBufferSize更改控制台内部缓冲区的大小。更改它对控制台窗口范围没有影响。如果您需要对控制台（缓冲区）的可见部分产生影响，请调用SetConsoleWindowInfo。

窗口缓冲区不能小于内部缓冲区，减小窗口缓冲区也会减少内部缓冲区，但不是相反。

如果你在COORDS中调用SetConsoleScreenBufferSize非法值（例如身高/宽度太少），那么你会得到一个错误，通常是87 'invalid argument'.

试试这段代码：

#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 continue\n";
  cin.ignore();
  cin.get();
  return 0;
}

Answer 2

晚会......

就MSDN和一些测试而言，屏幕缓冲区的设置不能小于窗口的范围，或者窗口的范围要大于屏幕缓冲区。

一个hack是在更改缓冲区大小之前将窗口缩小到最小值：

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);
}

Answer 3

试试这段代码：

system("mode 650");

Answer 4

我在12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）编译它。

https://sourceforge.net/projects/wa2l-wintools/中包含可执行文件。我希望这会有所帮助。

/*
 * 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;
}

减小控制台尺寸

4 个答案: