expose.cpp

The project demonstrates many Windows common controls, including the extensive use of image lists. T

// expose.cpp : implementation file
//

#include "stdafx.h"
#include "DooDads.h"
#include "expose.h"

#ifdef _DEBUG
#undef THIS_FILE
static char BASED_CODE THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CExposureDialog dialog


CExposureDialog::CExposureDialog(CWnd* pParent /*=NULL*/)
	: CDialog(CExposureDialog::IDD, pParent)
{
	//{{AFX_DATA_INIT(CExposureDialog)
		// NOTE: the ClassWizard will add member initialization here
	//}}AFX_DATA_INIT
	m_nShutter = 0;
	m_nAperture = 0;
}


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


	CSliderCtrl* pAperture = (CSliderCtrl*) GetDlgItem(IDC_APERTURE);
	CSliderCtrl* pShutter = (CSliderCtrl*) GetDlgItem(IDC_SHUTTER);

	if (pDX->m_bSaveAndValidate)
	{
		m_nShutter = pShutter->GetPos();
		m_nAperture = pShutter->GetPos();
	}
	else
	{
		pShutter->SetPos(m_nShutter);
		pShutter->SetPos(m_nAperture);		
	}
}


BEGIN_MESSAGE_MAP(CExposureDialog, CDialog)
	//{{AFX_MSG_MAP(CExposureDialog)
	ON_WM_HSCROLL()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()


/////////////////////////////////////////////////////////////////////////////
// CExposureDialog message handlers

LPCTSTR pstrAperture[] = {
	_T("1.8"),
	_T("2.8"),
	_T("3.5"),
	_T("4"),
	_T("5.8"),
	_T("8"),
	_T("11"),
	_T("16"),
	_T("22"),
};

LPCTSTR pstrShutter[] = {
	_T("1/2000"),
	_T("1/1000"),
	_T("1/500"),
	_T("1/250"),
	_T("1/125"),
	_T("1/60"),
	_T("1/30"),
	_T("1/15"),
	_T("1/8"),
	_T("1/4"),
	_T("1/2"),
	_T("1"),
	_T("2"),
	_T("4"),
	_T("8"),
	_T("15"),
	_T("30"),
};

BOOL CExposureDialog::OnInitDialog() 
{
	CDialog::OnInitDialog();
	CSliderCtrl* pAperture = (CSliderCtrl*) GetDlgItem(IDC_APERTURE);
	CSliderCtrl* pShutter = (CSliderCtrl*) GetDlgItem(IDC_SHUTTER);

	pAperture->SetRange(0, ELEMENTS(pstrAperture)-1);
	pShutter->SetRange(0, ELEMENTS(pstrShutter)-1);

	pAperture->ClearTics(TRUE);
	int nIndex;
	for (nIndex = 0; nIndex < ELEMENTS(pstrAperture); nIndex++)
		pAperture->SetTic(nIndex);

	SetDlgItemText(IDC_FSTOP, pstrAperture[0]);
	SetDlgItemText(IDC_SPEED, pstrShutter[0]);
	return TRUE;  // return TRUE unless you set the focus to a control
	              // EXCEPTION: OCX Property Pages should return FALSE
}

void CExposureDialog::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) 
{
	int nPosition;
	int nControl = pScrollBar->GetDlgCtrlID();
	CSliderCtrl* pControl = (CSliderCtrl*) GetDlgItem(nControl);

	switch (nControl)
	{
		case IDC_APERTURE:
			ASSERT(pControl != NULL);
			nPosition = pControl->GetPos();
			GetDlgItem(IDC_FSTOP)->SetWindowText(pstrAperture[nPosition]);
			break;

		case IDC_SHUTTER:
			ASSERT(pControl != NULL);
			nPosition = pControl->GetPos();
			GetDlgItem(IDC_SPEED)->SetWindowText(pstrShutter[nPosition]);
			break;

		default:
			CDialog::OnHScroll(nSBCode, nPos, pScrollBar);
			break;
	}

	return;
}