Plotting a graph in C++ window

Question

I want to plot a graph out of simple functions/set of coordinates in a window. I know the c++ win32 basics and I can make a simple window with buttons and other control objects. But which is the fastest and easiest library to plot a graph to my program?

rkosegi · Accepted Answer · 2012-03-10 10:09:41Z

2

I expect you are using Win32 API (not CLR).

Theory is easy, you need to obain device context withing WM_PAINT message. You can use main window or any child window (control - static, button) inside main window.

Here are some usefull links: http://www.codeproject.com/Articles/2078/Guide-to-WIN32-Paint-for-Intermediates

http://www.codeproject.com/Articles/66250/BeginPaint-EndPaint-or-GetDC-ReleaseDC.aspx

eg:

case WM_PAINT:
    BeginPaint(hWnd, &ps);
    LineTo(ps.hDC, 30,30);
    EndPaint(hWnd, &ps);
return 0;

This will draw line from 0,0 to 30,30

answered Mar 10, 2012 at 10:09

rkosegi

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2 Comments

Janman Over a year ago

Thanks for the quick and helpful answer! I made it work. Now I just have to find a way to make a rectangle where the line is drawn.

rkosegi Over a year ago

Hi @Janman, no problem, take a look here : msdn.microsoft.com/en-us/library/dd162898%28v=vs.85%29.aspx use it as follows inside BeginPaint and EndPaint : Rectangle(ps.hDC, 0, 0, 30, 30)

Flot2011 · Accepted Answer · 2012-03-10 10:15:11Z

2

Here is the light, easy to use library: http://www.codeproject.com/Articles/1546/Plot-Graphic-Library

answered Mar 10, 2012 at 10:15

Flot2011

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