Making the console window bigger in C

Question

How can I resize the Windows console window in C?

You need to use SetConsoleScreenBufferSize and then SetConsoleWindowInfo. If you can't get this to work, post the code. — Harry Johnston
– Harry Johnston, Commented Jun 18, 2013 at 4:45
Comment formatting is weird, so I'm just going to edit my post. New stuff in response to @HarryJohnston is up there. — Michael Anthony Leber
– Michael Anthony Leber, Commented Jun 18, 2013 at 5:06
@MichaelAnthonyLeber: generally speaking, anything the original poster wants to add to the question in response to a comment should indeed be made by editing the original post. :-) — Harry Johnston
– Harry Johnston, Commented Jun 18, 2013 at 5:10
@MichaelAnthonyLeber on Windows to change console window we were using registry entry HKCU\Console — qwr
– qwr, Commented Jun 18, 2013 at 5:11

Michael Anthony Leber · Accepted Answer · 2013-06-18 07:59:25Z

4

Alright, after much deliberation, I got the code working.

Using this include:

#include <windows.h>

This struct:

struct SMALL_RECT {
    SHORT Left;
    SHORT Top;
    SHORT Right;
    SHORT Bottom;
};

And this function:

void adjustWindowSize()
{
    struct SMALL_RECT test; 

    HANDLE hStdout;
    COORD coord;
    BOOL ok;

    hStdout = GetStdHandle(STD_OUTPUT_HANDLE);
    coord.X = 100;
    coord.Y = 50;
    ok = SetConsoleScreenBufferSize(hStdout, coord);

    test.Left = 0;
    test.Top = 0;
    test.Right = coord.X-1;
    test.Bottom = coord.Y-1;

    SetConsoleWindowInfo(hStdout, ok, &test);

} //end adjustWindowSize

I successfully adjusted the size of the console window to the values in coord.X and coord.Y

answered Jun 18, 2013 at 7:59

Michael Anthony Leber

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2 Comments

Tamás Szelei Over a year ago

While this probably works, it makes no sense to pass the return value of SetConsoleScreenBufferSize as the bAbsolute parameter of SetConsoleWindowInfo.

user1853517 Over a year ago

I'm unable to get this to work.. I'm on Window 11, using VS 2019 in C mode. SetConsoleScreenBufferSize always returns false. SetConsoleWindowInfo only returns true if test.Left and test.Top = 0. However, it never resizes the console window, no matter what I put in Right and Bottom.

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