C++ How to get the window size (width and height)?

Question

I'm trying to create a graph and I need to know the size of the window the user is running the code in. I'm trying to scale the data so the data shows only on the size of the window, without wrapping or scrolling. I'm on windows but I want to use something similar to Linux equivalent

int lines = atoi(getenv("LINES") ;
int cols  = atoi(getenv("COLUMNS") ;

So I can scale numbers and show a graph like this

320 a ============================================================
160 b ==============================
 80 c ===============
 40 d =======
 20 e ===
 10 f =
  5 g 
  2 h 
  1 i 
  2 j 
 17 k ===
 41 l =======
 67 m ============
 97 n ==================
127 o ========================
157 p =============================
191 q ====================================
227 r ===========================================
257 s ================================================
283 t =====================================================
331 u ==============================================================
367 v =====================================================================
373 w ======================================================================
379 x ========================================================================
383 y ========================================================================
389 z ==========================================================================

Is there something that will work on Windows and Linux? I'm using Visual Studio 2012.

[Look here for windows version](http://stackoverflow.com/questions/6812224/getting-terminal-size-in-c-for-windows), for crossplatform you would need a library such as ncurses. — Bartek Banachewicz, Nov 15 '13 at 16:39

score 12 · Answer 1 · answered Nov 15 '13 at 16:43

12

Use GetWindowRect

RECT rect;
if(GetWindowRect(hwnd, &rect))
{
  int width = rect.right - rect.left;
  int height = rect.bottom - rect.top;
}

answered Nov 15 '13 at 16:43

Mr.Geeker

395
3
13

The pixel dimensions returned by GetWindowRect mean nothing if you don't know the font size... – Jongware Nov 15 '13 at 16:46
1

This answers the title, but not the question, which clearly is dealing with console mode. – Ben Voigt Nov 15 '13 at 16:48
1

Does it include the titlebar? – DarkoNaito_09 Aug 04 '20 at 14:33
Yes, this does include the title bar. – Locke Oct 20 '21 at 00:11

Zuu · Answer 2 · 2013-11-15T16:45:36.087

1

Use GetConsoleScreenBufferInfo or one of its siblings. You are interrested in the dzSize field of the "returned" struct. Read documentation here: http://msdn.microsoft.com/en-us/library/windows/desktop/ms683171(v=vs.85).aspx

edited Nov 15 '13 at 16:45

answered Nov 15 '13 at 16:40

Zuu

1,123
5
11

score 0 · Answer 3 · answered Nov 15 '13 at 16:46

You already have a solution for Linux.

On Windows the API call you need is GetConsoleScreenBufferInfo.

This returns a CONSOLE_SCREEN_BUFFER_INFO struct, from which you read out the dwSize member:

A COORD structure that contains the size of the console screen buffer, in character columns and rows.

C++ How to get the window size (width and height)?

3 Answers3

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