linecolor.cpp

C++案

// LineColor.cpp : implementation file
//

#include "stdafx.h"
#include "Draw.h"
#include "LineColor.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CLineColor dialog


CLineColor::CLineColor(CWnd* pParent /*=NULL*/)
	: CDialog(CLineColor::IDD, pParent)
{
	//{{AFX_DATA_INIT(CLineColor)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
}


void CLineColor::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CLineColor)
		// NOTE: the ClassWizard will add DDX and DDV calls here
	//}}AFX_DATA_MAP
}


BEGIN_MESSAGE_MAP(CLineColor, CDialog)
	//{{AFX_MSG_MAP(CLineColor)
	ON_BN_CLICKED(IDC_BUTTON1, OnButton1)
	ON_WM_HSCROLL()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CLineColor message handlers

void CLineColor::OnButton1() 
{
	// TODO: Add your control notification handler code here
	CColorDialog dlg;
	if (dlg.DoModal()==IDOK)
	{
		CStatic *pic=(CStatic*)GetDlgItem(IDC_STATIC1);
		CRect rect;
		pic->GetClientRect(rect);
		CDC *dc=pic->GetDC();
		CBrush newbrush,*oldbrush;
		color=dlg.GetColor();
		newbrush.CreateSolidBrush(color);
		oldbrush=dc->SelectObject(&newbrush);
		dc->Rectangle(rect);
		dc->SelectObject(oldbrush);
	}
}

BOOL CLineColor::OnInitDialog() 
{
	CDialog::OnInitDialog();
	
	// TODO: Add extra initialization here
	CScrollBar *s1,*s2,*s3;
	s1=(CScrollBar*)GetDlgItem(IDC_SCROLLBAR1);
    s1->SetScrollRange(0,255);
	s1->SetScrollPos(0);
    s2=(CScrollBar*)GetDlgItem(IDC_SCROLLBAR2);
    s2->SetScrollRange(0,255);
	s2->SetScrollPos(0);
    s3=(CScrollBar*)GetDlgItem(IDC_SCROLLBAR3);
    s3->SetScrollRange(0,255);
	s3->SetScrollPos(0);
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CLineColor::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) 
{
	// TODO: Add your message handler code here and/or call default
	CScrollBar *s1=(CScrollBar*)GetDlgItem(IDC_SCROLLBAR1);
    r=s1->GetScrollPos();
	CScrollBar *s2=(CScrollBar*)GetDlgItem(IDC_SCROLLBAR2);
    g=s2->GetScrollPos();
	CScrollBar *s3=(CScrollBar*)GetDlgItem(IDC_SCROLLBAR3);
    b=s3->GetScrollPos();
	if (pScrollBar->GetDlgCtrlID()==IDC_SCROLLBAR1)
	{
		switch (nSBCode)
		{
		case SB_THUMBTRACK:
			r=nPos;
			break;
		case SB_LINELEFT:
			r-=1;
			break;
		case SB_LINERIGHT:
			r+=1;
			break;
		case SB_PAGELEFT:
			r-=3;
			break;
		case SB_PAGERIGHT:
			r+=3;
			break;
		default:
			break;
		}
		if (r<0)
			r=0;
	    if (r>255)
			r=255;
		s1->SetScrollPos(r);
        color=RGB(r,g,b);
	}
    if (pScrollBar->GetDlgCtrlID()==IDC_SCROLLBAR2)
	{
		switch (nSBCode)
		{
		case SB_THUMBTRACK:
			g=nPos;
			break;
		case SB_LINELEFT:
			g-=1;
			break;
		case SB_LINERIGHT:
			g+=1;
			break;
		case SB_PAGELEFT:
			g-=3;
			break;
		case SB_PAGERIGHT:
			g+=3;
			break;
		default:
			break;
		}
		if (g<0)
			g=0;
	    if (g>255)
			g=255;
		s2->SetScrollPos(g);
        color=RGB(r,g,b);
	}
	if (pScrollBar->GetDlgCtrlID()==IDC_SCROLLBAR3)
	{
		switch (nSBCode)
		{
		case SB_THUMBTRACK:
			b=nPos;
			break;
		case SB_LINELEFT:
			b-=1;
			break;
		case SB_LINERIGHT:
			b+=1;
			break;
		case SB_PAGELEFT:
			b-=3;
			break;
		case SB_PAGERIGHT:
			b+=3;
			break;
		default:
			break;
		}
		if (b<0)
			b=0;
	    if (b>255)
			b=255;
		s3->SetScrollPos(b);
        color=RGB(r,g,b);
	}
    CStatic *pic=(CStatic*)GetDlgItem(IDC_STATIC1);
	CRect rect;
	pic->GetClientRect(rect);
	CDC *dc=pic->GetDC();
	CBrush newbrush,*oldbrush;
	newbrush.CreateSolidBrush(color);
	oldbrush=dc->SelectObject(&newbrush);
	dc->Rectangle(rect);
	dc->SelectObject(oldbrush);
	CDialog::OnHScroll(nSBCode, nPos, pScrollBar);
}