2024年2月21日发(作者：)

类

CDC *pDC=GetDC();pDC->MoveTo(m_pOrigin);pDC->LineTo(m_pPoint);ReleaseDC(pDC);CPen画笔绘制彩色线条

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000CPen(int nPenStyle,int nWidth,COLORREF crColor);

COLORREF RGB(BYTE bRed,BYTE bGreen,BYTE bBule);

CPen pen(PS_SOLID,1,RGB(255,0,0));0000

CClientDC dc(this);

CPen *pOldPen=Object(&pen);(m_ptOrigin);(point);

000

00 Object(pOldPen);CBrush画刷画图0000

BOOL BitBlt( int x, int y, int nWidth, int nHeight, CDC* pSrcDC, int xSrc, int ySrc,

DWORD dwRop ); 0

BOOL StretchBlt( int x, int y, int nWidth, int nHeight, CDC* pSrcDC, int xSrc,

int ySrc, int nSrcWidth, int nSrcHeight, DWORD dwRop );00

tDC类

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wsDC类00CRect rect;GetClientRect(&rect);//

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000// Center led within an oversized window000

//

if(() >= LED_SIZE && () >= LED_SIZE)

{

}000

00int nWidth = ();int nHeight = ();

+= (nWidth - LED_SIZE)/2; -= (nWidth - LED_SIZE)/2; += (nHeight - LED_SIZE)/2;

-= (nHeight - LED_SIZE)/2;00//0// Prepare temporary DCs and bitmaps//

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CBitmap TransBitmap;0

Bitmap(LED_SIZE,LED_SIZE,1,1,NULL);

CBitmap bitmapTemp;CBitmap* pBitmap = &m_LedBitmap;CDC srcDC;00

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CDC dcMask;00CDC TempDC;

CompatibleDC(pDC);CompatibleDC(pDC);0

CompatibleDC(pDC);000CBitmap* pOldBitmap = Object(pBitmap);CBitmap* pOldMaskbitmap = Object(&TransBitmap);

CompatibleBitmap(pDC,LED_SIZE,LED_SIZE);

//

000// Work with tempDC and bitmapTemp to reduce flickering

0

0//

CBitmap *pOldBitmapTemp = Object(&bitmapTemp);

(0, 0, LED_SIZE, LED_SIZE, pDC, , ,

00SRCCOPY);

//// Create mask//0

0000COLORREF OldBkColor = olor(RGB(255,0,255));

(0, 0, LED_SIZE, LED_SIZE,&srcDC, nMode*LED_SIZE,

nLEDColor+nShape, SRCCOPY);

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olor(OldBkColor);//

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00// Using the IDB_LEDS bitmap, index into the bitmap for the appropriate

// LED. By using the mask color (RGB(255,0,255)) a mask has been

00created

00// so the bitmap will appear transparent.

//

(0, 0, LED_SIZE, LED_SIZE, &srcDC, nMode*LED_SIZE,

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nLEDColor+nShape, SRCINVERT);

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(0, 0, LED_SIZE, LED_SIZE,&dcMask, 0, 0, SRCAND);

(0, 0, LED_SIZE, LED_SIZE, &srcDC, nMode*LED_SIZE,

nLEDColor+nShape, SRCINVERT);

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//0

00// Since the actual minipulation is done to tempDC so there is minimal

// flicker, it is now time to draw the result to the screen.00

//

pDC->BitBlt(, , LED_SIZE, LED_SIZE, &TempDC, 0, 0,

00SRCCOPY);

//// House cleaning0

00//

Object(pOldBitmap);Object(pOldMaskbitmap);Object(pOldBitmapTemp);VERIFY(DC());VERIFY(DC());VERIFY(DC());VERIFY(Object());000

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