//?3DMeterCtrl.cpp?:?implementation?file
//

#include?“stdafx.h“
#include?“math.h“?
#include?“3DMeterCtrl.h“
#include?“MemDC.h“
#ifdef?_DEBUG
#define?new?DEBUG_NEW
#undef?THIS_FILE
static?char?THIS_FILE[]?=?__FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
//?C3DMeterCtrl

C3DMeterCtrl::C3DMeterCtrl（）
{
	m_dCurrentValue??=??0.0?;
	m_dMaxValue??????=??5.0?;
	m_dMinValue??????=?-5.0?;

	m_nScaleDecimals?=?1?;
	m_nValueDecimals?=?3?;

	m_strUnits.Format（“Volts“）?;

	m_colorNeedle?=?RGB（255?0?0）?;

}

C3DMeterCtrl::~C3DMeterCtrl（）
{
	if?（（m_pBitmapOldBackground）?&&?
		??（m_bitmapBackground.GetSafeHandle（））?&&?
			（m_dcBackground.GetSafeHdc（）））
		m_dcBackground.Selectobject（m_pBitmapOldBackground）;
}


BEGIN_MESSAGE_MAP（C3DMeterCtrl?CStatic）
	//{{AFX_MSG_MAP（C3DMeterCtrl）
	ON_WM_PAINT（）
	ON_WM_SIZE（）
	//}}AFX_MSG_MAP
END_MESSAGE_MAP（）

/////////////////////////////////////////////////////////////////////////////
//?C3DMeterCtrl?message?handlers

void?C3DMeterCtrl::OnPaint（）?
{
	CPaintDC?dc（this）;?//?device?context?for?painting
		
	//?Find?out?how?big?we?are
	GetClientRect?（&m_rectCtrl）?;

	//?make?a?memory?dc
	CMemDC?memDC（&dc?&m_rectCtrl）;

	//?set?up?a?memory?dc?for?the?background?stuff?
	//?if?one?isn‘t?being?used
	if?（（m_dcBackground.GetSafeHdc（）?==?NULL）?||?（m_bitmapBackground.m_hobject?==?NULL））
	{
		m_dcBackground.CreateCompatibleDC（&dc）?;
		m_bitmapBackground.CreateCompatibleBitmap（&dc?m_rectCtrl.Width（）?
																							m_rectCtrl.Height（））?;
		m_pBitmapOldBackground?=?m_dcBackground.Selectobject（&m_bitmapBackground）?;

		//?Fill?this?bitmap?with?the?background.

		//?Note:?This?requires?some?serious?drawing?and?calculating?
		//?therefore?it?is?drawn?“once“?to?a?bitmap?and?
		//?the?bitmap?is?stored?and?blt‘d?when?needed.
		DrawMeterBackground（&m_dcBackground?m_rectCtrl）?;
						
	}

	//?drop?in?the?background
	memDC.BitBlt（0?0?m_rectCtrl.Width（）?m_rectCtrl.Height（）?
			???????????&m_dcBackground?0?0?SRCCOPY）?;

	//?add?the?needle?to?the?background
	DrawNeedle（&memDC）?;

	//?add?the?value?to?the?background
	DrawValue（&memDC）?;

}

void?C3DMeterCtrl::DrawValue（CDC?*pDC）
{
	CFont?*pFontOld?;
	CString?strTemp?;

	//?Pick?up?the?font.
	//?Note:?the?font?was?determined?in?the?drawing
	//?of?the?background
??pFontOld?=?pDC->Selectobject（&m_fontValue）?;

	//?set?the?colors?based?on?the?system?colors
	pDC->SetTextColor（m_colorText）?;
	pDC->SetBkColor（m_colorButton）?;

	//?draw?the?text?in?the?recessed?rectangle
	pDC->SetTextAlign（TA_CENTER|TA_baseLINE）?;
	strTemp.Format（“%.*f“?m_nValueDecimals?m_dCurrentValue）?;
	pDC->TextOut（m_nValueCenter?m_nValuebaseline?strTemp）?;

	//?restore?the?color?and?the?font
	pDC->SetBkColor（m_colorWindow）?;
??pDC->Selectobject（pFontOld）?;

}

void?C3DMeterCtrl::UpdateNeedle（double?dValue）
{
	m_dCurrentValue?=?dValue?;
	Invalidate（）?;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件??????15555??2010-05-28?09:38??ZhangPengCheng\3DMeterCtrl.cpp

?????文件???????2452??2010-05-28?09:38??ZhangPengCheng\3DMeterCtrl.h

?????文件???????7991??2010-05-28?14:27??ZhangPengCheng\Compass.cpp

?????文件???????1834??2010-05-28?14:27??ZhangPengCheng\Compass.h

?????文件??????46704??2010-06-20?10:34??ZhangPengCheng\Debug\3DMeterCtrl.obj

?????文件??????????0??2010-06-20?10:34??ZhangPengCheng\Debug\3DMeterCtrl.sbr

?????文件??????24913??2010-06-20?10:34??ZhangPengCheng\Debug\Compass.obj

?????文件??????????0??2010-06-20?10:34??ZhangPengCheng\Debug\Compass.sbr

?????文件??????22492??2010-06-20?10:34??ZhangPengCheng\Debug\DynamicLED.obj

?????文件??????????0??2010-06-20?10:34??ZhangPengCheng\Debug\DynamicLED.sbr

?????文件??????57390??2010-06-20?10:34??ZhangPengCheng\Debug\Meter.obj

?????文件??????????0??2010-06-20?10:34??ZhangPengCheng\Debug\Meter.sbr

?????文件???????4782??2010-06-20?10:34??ZhangPengCheng\Debug\PIDControl.obj

?????文件??????????0??2010-06-20?10:34??ZhangPengCheng\Debug\PIDControl.sbr

?????文件??????78061??2010-06-20?10:34??ZhangPengCheng\Debug\RoundSliderCtrl.obj

?????文件??????????0??2010-06-20?10:34??ZhangPengCheng\Debug\RoundSliderCtrl.sbr

?????文件??????43265??2010-06-20?10:35??ZhangPengCheng\Debug\ScaleUnit.obj

?????文件??????????0??2010-06-20?10:35??ZhangPengCheng\Debug\ScaleUnit.sbr

?????文件??????37050??2010-06-20?10:34??ZhangPengCheng\Debug\StaticTime.obj

?????文件??????????0??2010-06-20?10:34??ZhangPengCheng\Debug\StaticTime.sbr

?????文件?????106080??2010-06-20?10:34??ZhangPengCheng\Debug\StdAfx.obj

?????文件????1374958??2010-06-20?10:34??ZhangPengCheng\Debug\StdAfx.sbr

?????文件??????16654??2010-06-20?10:34??ZhangPengCheng\Debug\SwitchStatic.obj

?????文件??????????0??2010-06-20?10:34??ZhangPengCheng\Debug\SwitchStatic.sbr

?????文件?????238592??2010-06-20?10:40??ZhangPengCheng\Debug\vc60.idb

?????文件?????380928??2010-06-20?10:39??ZhangPengCheng\Debug\vc60.pdb

?????文件????5481472??2010-06-20?10:39??ZhangPengCheng\Debug\ZhangPengCheng.bsc

?????文件?????315493??2010-06-20?10:39??ZhangPengCheng\Debug\ZhangPengCheng.exe

?????文件?????513652??2010-06-20?10:39??ZhangPengCheng\Debug\ZhangPengCheng.ilk

?????文件??????19453??2010-06-20?10:35??ZhangPengCheng\Debug\ZhangPengCheng.obj

............此處省略58個文件信息