Re: Bargraphs in VC++ 6.0

Here is a very simple one, using the same code that you posted.

//////////////////////////////////////////////////////////////////////////
// BarChart.h
#pragma once

#include <afxtempl.h>

// CBarChart
typedef CArray <int> IntArray;

class CBarChart : public CStatic
{
 DECLARE_DYNAMIC(CBarChart)

public:
 CBarChart();
 virtual ~CBarChart();

   void SetNumData(int NumData);
   void SetData(int Index,int Value);
protected:
   afx_msg void OnPaint();
 DECLARE_MESSAGE_MAP()

private:
   IntArray m_Array;
};

///////////////////////////////////////////////////////////////////////
// BarChart.cpp : implementation file
//

#include "stdafx.h"
#include "BarChart.h"

// CBarChart

IMPLEMENT_DYNAMIC(CBarChart, CStatic)
CBarChart::CBarChart()
{
}

CBarChart::~CBarChart()
{
}

BEGIN_MESSAGE_MAP(CBarChart, CStatic)
   ON_WM_PAINT()
END_MESSAGE_MAP()

// CBarChart message handlers
void CBarChart::SetNumData(int NumData)
{
   m_Array.SetSize(NumData);
}

void CBarChart::SetData(int Index,int Value)
{
   if (Index < m_Array.GetCount())
   {
      m_Array.SetAt(Index,Value);
   }
}

void CBarChart::OnPaint()
{
   CPaintDC dc(this); // device context for painting

   int SavedDC = dc.SaveDC();

   CRect cr;
   GetClientRect(&cr);

   CBrush GreenBrush(RGB(100,255,100));
   CBrush WhiteBrush(RGB(255,255,255));

   int c=15,b=5;
   int d = (cr.Width()-20)/m_Array.GetCount();

   dc.SelectObject(WhiteBrush);
   dc.Rectangle(0,0,cr.Width(), cr.Height());

   dc.SelectObject(GreenBrush);
   for (b=0; b<m_Array.GetCount(); b++)
   {
      int a = m_Array.GetAt(b);
      dc.Rectangle(c, cr.Height(), c+20, cr.Height()-a);
      c+=d;
   }

   dc.RestoreDC(SavedDC);
}

Put a Static control on your dialog, give an id other than IDC_STATIC. Then
attach a variable to it. Change the variable type from CStatic to
CBarChart. Then call SetNumData and SetData in your OnInitDialog

   m_BarChart.SetNumData(5);
   m_BarChart.SetData(0,10);
   m_BarChart.SetData(1,20);
   m_BarChart.SetData(2,50);
   m_BarChart.SetData(3,100);
   m_BarChart.SetData(4,35);

AliR.

"AliR (VC++ MVP)" <AliR@online.nospam> wrote in message
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