mfcsaverdlg.cpp

书上的关于屏幕保护程序的代码

// MfcSaverDlg.cpp : implementation file
//

#include "StdAfx.h"
#include "MfcSaver.h"
#include "MfcSaverDlg.h"

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

/////////////////////////////////////////////////////////////////////////////

BEGIN_MESSAGE_MAP(CMfcSaverDlg, CB14Dlg)
	//{{AFX_MSG_MAP(CMfcSaverDlg)
	ON_WM_PAINT()
	ON_WM_QUERYDRAGICON()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

CMfcSaverDlg::CMfcSaverDlg()
{
	//{{AFX_DATA_INIT(CMfcSaverDlg)
	//}}AFX_DATA_INIT
}

BOOL CMfcSaverDlg::OnInitDialog()
{
	CB14Dlg::OnInitDialog();

	return TRUE;
}



/////////////////////////////////////////////////////////////////////////////

//
// As with most MFC dialog boxes, the DoDataExchange() is where all the work
// happens.  There's no easy DDX_Trackbar thing to set up the control, so
// we do it ourselves.  See how the SaveOptions() and RestoreOptions() are
// called on the CMfcSaver to keep those options persistent.
//

void CMfcSaverDlg::DoDataExchange(CDataExchange* pDX)
{
	CB14Dlg::DoDataExchange(pDX);
	//{{AFX_DATA_MAP(CMfcSaverDlg)
	//}}AFX_DATA_MAP

	CMfcSaver* pSaver = (CMfcSaver*)AfxGetScreenSaverWnd();
	if (!pSaver)
		return;

	CSliderCtrl* pSlider;
	if (!pDX->m_bSaveAndValidate)
	{
		pSaver->RestoreOptions();

		pSlider = (CSliderCtrl*)GetDlgItem(IDC_SLIDER1);
		pSlider->SetRange(1, 50);
		pSlider->SetPos(pSaver->GetIconCount());

		pSlider = (CSliderCtrl*)GetDlgItem(IDC_SLIDER2);
		pSlider->SetRange(1, 50);
		pSlider->SetPos(pSaver->GetIconSpeed());
	}
	else
	{
		pSlider = (CSliderCtrl*)GetDlgItem(IDC_SLIDER1);
		pSaver->SetIconCount(pSlider->GetPos());

		pSlider = (CSliderCtrl*)GetDlgItem(IDC_SLIDER2);
		pSaver->SetIconSpeed(pSlider->GetPos());

		pSaver->SaveOptions();
	}
}