当前位置: 首页>>代码示例>>C++>>正文

C++ CDC::AlphaBlend方法代码示例

本文整理汇总了C++中CDC::AlphaBlend方法的典型用法代码示例。如果您正苦于以下问题：C++ CDC::AlphaBlend方法的具体用法？C++ CDC::AlphaBlend怎么用？C++ CDC::AlphaBlend使用的例子？那么, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类CDC的用法示例。


在下文中一共展示了CDC::AlphaBlend方法的8个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C++代码示例。

示例1: DrawHorizontalTransition

// 画水平过渡
int DrawHorizontalTransition(CDC &dcDes, CDC &dcSrc, const CRect &rcDes, const CRect &rcSrc, int nBeginTransparent/* = 0*/, int nEndTransparent/* = 100*/)
{
	ASSERT(rcDes.Width() == rcSrc.Width() && rcDes.Height() == rcSrc.Height());

	BOOL bIsDownTransition = TRUE;
	if (nEndTransparent <= nBeginTransparent)
	{
		bIsDownTransition = FALSE;
		int nTemp = nBeginTransparent;
		nBeginTransparent = nEndTransparent;
		nEndTransparent = nTemp;
	}

	BLENDFUNCTION blend;
	memset( &blend, 0, sizeof( blend) );
	blend.BlendOp = AC_SRC_OVER;
	blend.SourceConstantAlpha = 255;

	int nWidth = rcDes.Width();
	int nHeight =  rcDes.Height();

	int nMinTransition = (int)(255 - 255.0 * nBeginTransparent / 100.0);
	int nMaxTransition = (int)(255.0 * (100 - nEndTransparent) / 100.0);
	double dTransition = (nMinTransition - nMaxTransition) / (double)nWidth;

	for (int i = 0; i < nWidth; i++)
	{
		blend.SourceConstantAlpha = (BYTE)(bIsDownTransition ? nMinTransition - (dTransition * i) : nMaxTransition + (dTransition * i)); 
		dcDes.AlphaBlend(rcDes.left + i, rcDes.top , 1, nHeight, &dcSrc, rcSrc.left + i, rcSrc.top, 1, nHeight, blend); 
	}

	return blend.SourceConstantAlpha;
}
开发者ID:LLLiuWeicai，项目名称:webposclient，代码行数:34，代码来源:GlobalFunction.cpp

示例2: DrawRightBottomTransition

// 画右下角过渡
void DrawRightBottomTransition(CDC &dc, CDC &dcTemp, CRect rc, const int nOverRegio, const COLORREF clrBackground)
{
	BLENDFUNCTION blend;
	memset( &blend, 0, sizeof( blend) );
	blend.BlendOp= AC_SRC_OVER;
	blend.SourceConstantAlpha = 255; 

	int nStartX = rc.Width() - nOverRegio;
	int nStartY = rc.Height() - nOverRegio;
	double dRadius = (double)sqrt((double)(nOverRegio * nOverRegio + nOverRegio * nOverRegio));
	double dRadiusTemp = 0.0;

	for (int i = 0; i < nOverRegio; i++)
	{
		for (int j = 0; j < nOverRegio; j++)
		{
			dRadiusTemp  = (double)sqrt((double)(i * i + j * j));
			if (dRadiusTemp > nOverRegio)
			{
				dRadiusTemp = nOverRegio;
			}
			blend.SourceConstantAlpha = (BYTE)(255 - (255.0 / nOverRegio * (dRadiusTemp)));
			dc.AlphaBlend(nStartX + i, nStartY + j, 1, 1, &dcTemp, nStartX + i, nStartY + j, 1, 1, blend);
		} 	
	}
}
开发者ID:LLLiuWeicai，项目名称:webposclient，代码行数:27，代码来源:GlobalFunction.cpp

示例3: DrawVerticalTransition

int CControlBase::DrawVerticalTransition(CDC &dcDes, CDC &dcSrc, const CRect &rc, int nBeginTransparent/* = 0*/, int nEndTransparent/* = 100*/)
{
	BOOL bIsDownTransition = TRUE;
	if (nEndTransparent <= nBeginTransparent)
	{
		bIsDownTransition = FALSE;
		int nTemp = nBeginTransparent;
		nBeginTransparent = nEndTransparent;
		nEndTransparent = nTemp;
	}

	BLENDFUNCTION blend;
	memset( &blend, 0, sizeof( blend) );
	blend.BlendOp= AC_SRC_OVER;
	blend.SourceConstantAlpha = 255;

	int nStartPosition = rc.top;
	int nWidth = rc.right - rc.left;
	int nHeight =  rc.bottom - rc.top;

	int nMinTransition = 255 - 255.0 * nBeginTransparent / 100.0;
	int nMaxTransition = 255.0 * (100 - nEndTransparent) / 100.0;
	double dTransition = (nMinTransition - nMaxTransition) / (double)nHeight;
	if (bIsDownTransition)
	{
		for (int i = 0; i < nHeight; i++)
		{
			blend.SourceConstantAlpha = nMinTransition/* -  nMaxTransition*/ - (dTransition * i); 
			dcDes.AlphaBlend(rc.left, nStartPosition + i,nWidth , 1, 
				&dcSrc, rc.left, nStartPosition + i, nWidth, 1, blend); 
			//TRACE("%d\n", blend.SourceConstantAlpha);
		}
	}
	else
	{
		for (int i = 0; i < nHeight; i++)
		{
			blend.SourceConstantAlpha = nMaxTransition + (dTransition * i); 
			dcDes.AlphaBlend(rc.left, nStartPosition + i,nWidth , 1, 
				&dcSrc, rc.left, nStartPosition + i, nWidth, 1, blend); 
			//TRACE("\t\t\t\t%d\n", blend.SourceConstantAlpha);
		}
	}
	//TRACE("\n");
	return blend.SourceConstantAlpha;
}
开发者ID:boboding，项目名称:Boboding，代码行数:46，代码来源:ControlBase.cpp

示例4: Draw

void RectAlphaDrawer::Draw(CDC& dc, CRect& rc, BYTE Alpha)
{
	if (m_pDC == NULL)
		CreateInternalDC(&dc);
	BLENDFUNCTION blFunc = {AC_SRC_OVER, 0, Alpha, 0}; 
	dc.AlphaBlend(rc.left, rc.top, rc.Width(), rc.Height(), GetInternalDC(), 0, 0, s_InternalRect.Width(), s_InternalRect.Height(), blFunc);
	if (m_drawOptions & DO_DrawNotAlphaPerigram)
		dc.Draw3dRect(&rc, m_bkColor, m_bkColor);
}
开发者ID:KurzedMetal，项目名称:Jaangle，代码行数:9，代码来源:RectAlphaDrawer.cpp

示例5: Draw

void ToppyFramework::Draw(CDC* pDC)
{
	CDC* pMemDC = GetDC();


	if (NeedsRepaint())
	{
		m_TheState.Draw(pMemDC);

		CDC osdDC;
		osdDC.CreateCompatibleDC(pDC);
		osdDC.SetBkColor(TRANSPARENT_COLOUR);
		CBitmap bmOsd;
		bmOsd.CreateCompatibleBitmap(pDC, 720, 576);
		osdDC.SelectObject(&bmOsd);
		osdDC.FillSolidRect(0,0,720,576,TRANSPARENT_COLOUR);
		if (m_OSDregions.Draw(&osdDC))
		{
			CDC monoDC;
			monoDC.CreateCompatibleDC(pDC);
			CBitmap maskBm;
			maskBm.CreateBitmap(720, 576, 1, 1, NULL);
			monoDC.SelectObject(maskBm);
			osdDC.SetBkColor(TRANSPARENT_COLOUR);
			monoDC.BitBlt(0, 0, 720, 576, &osdDC, 0, 0, SRCCOPY);

			CDC tempDC;
			tempDC.CreateCompatibleDC(pDC);
			CBitmap tempBM;
			tempBM.CreateCompatibleBitmap(pDC, 720, 576);
			tempDC.SelectObject(&tempBM);
			tempDC.BitBlt(0,0, 720, 576, pMemDC, 0, 0, SRCCOPY);

			BLENDFUNCTION bf = {AC_SRC_OVER, 0, 255-(BYTE)(GetConfig()->GetOsdTransparency() * 255/100), 0};
			pMemDC->AlphaBlend(0, 0, 720, 576, &osdDC, 0, 0, 720, 576, bf );
	//
	////		 now contains correct over OSD area, wrong in background
	//
			pMemDC->MaskBlt(0,0, 720, 576, &tempDC, 0, 0, maskBm, 0, 0, MAKEROP4(SRCCOPY, DSTCOPY));
			//memDC.BitBlt(0, 0, 720, 576, &osdDC, 0, 0, SRCCOPY);
		}
	}

	pDC->BitBlt(0,0, 720, 576, pMemDC, 0, 0, SRCCOPY); 
	ReleaseDC();
}
开发者ID:BackupTheBerlios，项目名称:tap-svn，代码行数:46，代码来源:ToppyFramework.cpp

示例6: DrawRectangle

// 画过渡圆角矩加
void DrawRectangle(CDC &dc, const CRect &rc, BOOL bUp/* = TRUE*/, int nBeginTransparent/* = 50*/, int nEndTransparent/* = 90*/)
{
	int nWidth = rc.Width();
	int nHeight = rc.Height();
	int nDesStartX = rc.left;
	int nDesStartY = rc.top;	

	CDC TempDC;
	TempDC.CreateCompatibleDC(&dc);

	CBitmap memBmp;
	memBmp.CreateCompatibleBitmap(&dc, nWidth, nHeight);
	CBitmap *pOldmap =  TempDC.SelectObject(&memBmp);

	TempDC.FillSolidRect(0, 0, nWidth, nHeight, RGB(0, 0, 0));
	TempDC.FillSolidRect(1, 1, nWidth - 2, nHeight - 2, RGB(255, 255, 255));

	// 中间
	CRect rcSrc;
	CRect rcDes;
	if(bUp)
	{
		rcSrc.SetRect(1, 1, nWidth - 1, nHeight / 2);
		rcDes.SetRect(nDesStartX + 1, nDesStartY + 1, nDesStartX + nWidth - 1, nDesStartY + nHeight / 2);
	}
	else
	{
		rcSrc.SetRect(1, nHeight / 2, nWidth - 1, nHeight - 1);
		rcDes.SetRect(nDesStartX + 1, nDesStartY + nHeight / 2, nDesStartX + nWidth - 1, nDesStartY + nHeight - 1);		
	}

	DrawVerticalTransition(dc, TempDC, rcDes, rcSrc, nBeginTransparent, nEndTransparent);

	// 边框
	BLENDFUNCTION blend;
	memset( &blend, 0, sizeof( blend) );
	blend.BlendOp= AC_SRC_OVER;
	blend.SourceConstantAlpha = 100;
	// 左
	dc.AlphaBlend(nDesStartX, nDesStartY + 1, 2, nHeight - 2, &TempDC, 0, 1, 2, nHeight - 2, blend);
	// 上
	dc.AlphaBlend(nDesStartX + 1, nDesStartY, nWidth - 2, 2, &TempDC, 1, 0, nWidth - 2, 2, blend);
	// 右
	dc.AlphaBlend(nDesStartX + nWidth - 2, nDesStartY + 1, 2, nHeight - 2, &TempDC, nWidth - 2, 1, 2, nHeight - 2, blend);
	// 下
	dc.AlphaBlend(nDesStartX + 1, rc.bottom - 2, nWidth - 2, 2, &TempDC, 1, nHeight - 2, nWidth - 2, 2, blend);

	blend.SourceConstantAlpha = 12;
	// 左上
	dc.AlphaBlend(nDesStartX, nDesStartY, 2, 2, &TempDC, 0, 0, 1, 1, blend);
	// 右上
	dc.AlphaBlend(nDesStartX + nWidth, nDesStartY, 2, 2, &TempDC, 0, 0, 1, 1, blend);
	// 右下
	dc.AlphaBlend(nDesStartX + nWidth, nDesStartY + nHeight, 2, 2, &TempDC, 0, 0, 1, 1, blend);
	// 左下
	dc.AlphaBlend(nDesStartX , nDesStartY + nHeight, 2, 2, &TempDC, 0, 0, 1, 1, blend);

	TempDC.SelectObject(pOldmap);
	memBmp.DeleteObject();
	TempDC.DeleteDC();
}
开发者ID:LLLiuWeicai，项目名称:webposclient，代码行数:62，代码来源:GlobalFunction.cpp

示例7: DrawWindow

void CWndPopup::DrawWindow()
{
	CRect rcClient;
	GetClientRect(&rcClient);

	CDC *pDC = GetDC();
	CDC MemDC;
	MemDC.CreateCompatibleDC(pDC);

	CBitmap memBit;
	memBit.CreateCompatibleBitmap(pDC, rcClient.Width(), rcClient.Height());

	CBitmap *pOldBit = MemDC.SelectObject(&memBit);

	MemDC.SetBkMode(TRANSPARENT);
	if(m_pImage)
	{
		Graphics graphics(MemDC);
		DrawImageFrame(graphics, m_pImage, rcClient,0, 0, m_sizeBKImage.cx, m_sizeBKImage.cy, 32);
	}
	else
	{
		MemDC.FillSolidRect(rcClient.left, rcClient.top, rcClient.Width(), rcClient.Height(), RGB(0, 147, 209));
		MemDC.FillSolidRect(rcClient.left + 1, rcClient.top + 1, rcClient.Width() - 2, rcClient.Height() - 2, RGB(255, 255, 255));
	}

	CDC TempMemDC;
	TempMemDC.CreateCompatibleDC(&MemDC);
	TempMemDC.SetBkMode(TRANSPARENT);

	CBitmap TempMemBit;
	TempMemBit.CreateCompatibleBitmap(&MemDC, rcClient.Width(), rcClient.Height());

	CBitmap *pTempOldBit = TempMemDC.SelectObject(&TempMemBit);

	TempMemDC.FillSolidRect(0, 0, rcClient.Width(), rcClient.Height(), RGB(255, 0, 255));

	DrawWindow(TempMemDC, rcClient);

	DWORD dwSize = TempMemBit.GetBitmapBits(0,NULL);
	unsigned char *lpBuffer = new unsigned char[dwSize];
	TempMemBit.GetBitmapBits(dwSize,lpBuffer);
	for( int i = 0 ; i+3 < dwSize ; i+=4 )
	{
		if(lpBuffer[i] == 255 && lpBuffer[i + 1] == 0 && lpBuffer[i + 2] == 255)
		{
			lpBuffer[i] = 0;
			lpBuffer[i + 1] = 0;
			lpBuffer[i + 2] = 0;
		}
		else 			
		{
			if(lpBuffer[i] == 0 && lpBuffer[i + 1] == 0 && lpBuffer[i + 2] == 0) lpBuffer[i] = 1;
			lpBuffer[i+3] = 255;
		}
	}
	TempMemBit.SetBitmapBits(dwSize, lpBuffer);
	delete[] lpBuffer;

	BLENDFUNCTION blendTemp = {AC_SRC_OVER,0,255,AC_SRC_ALPHA};
	MemDC.AlphaBlend(0, 0, rcClient.Width(), rcClient.Height(), &TempMemDC, 0, 0, rcClient.Width(), rcClient.Height(), blendTemp);

	TempMemDC.SelectObject(pTempOldBit);
	TempMemBit.DeleteObject();
	TempMemDC.DeleteDC();

	DrawWindowEx(MemDC, rcClient);
 	DWORD dwSizeMen = memBit.GetBitmapBits(0,NULL);
 	unsigned char *lpBufferMen = new unsigned char[dwSize];
 	memBit.GetBitmapBits(dwSizeMen,lpBufferMen);
 	for( int i = 0 ; i+3 < dwSizeMen ; i+=4 )
 	{
 		if(lpBufferMen[i] == 0 && lpBufferMen[i + 1] == 0 && lpBufferMen[i + 2] == 0) lpBufferMen[i] = 1;
 	}
 	memBit.SetBitmapBits(dwSizeMen, lpBufferMen);
 	delete[] lpBufferMen;


	ClientToScreen(&rcClient);
	POINT pointDes;
	pointDes.x = rcClient.left;
	pointDes.y = rcClient.top;
	POINT pointSrc;
	pointSrc.x = 0;
	pointSrc.y = 0;
	SIZE sizeDes;
	sizeDes.cx = rcClient.Width();
	sizeDes.cy = rcClient.Height();

	BLENDFUNCTION blend;
	memset( &blend, 0, sizeof( blend) );
	blend.AlphaFormat = AC_SRC_ALPHA ;
	blend.SourceConstantAlpha = 255;

	HWND hWnd = GetSafeHwnd();
	SetWindowLong(hWnd,GWL_EXSTYLE, GetWindowLong(hWnd, GWL_EXSTYLE) | WS_EX_LAYERED);
	UpdateLayeredWindow(pDC, &pointDes, &sizeDes, &MemDC, &pointSrc, 0, &blend,m_pImage ? ULW_ALPHA : ULW_COLORKEY);

	MemDC.SelectObject(pOldBit);
	memBit.DeleteObject();
//.........这里部分代码省略.........
开发者ID:guomin，项目名称:MyQQ，代码行数:101，代码来源:WndPopup.cpp

示例8: DrawTransitionSpace

int CControlBase::DrawTransitionSpace(CDC &dcDes, const CRect &rc, int nBeginTransparent/* = 0*/, int nEndTransparent/* = 100*/)
{
	CRect rcClientTemp = rc;
	CDC TempDC;
	TempDC.CreateCompatibleDC(&dcDes);

	CBitmap memBmp;
	memBmp.CreateCompatibleBitmap(&dcDes, rc.right, rc.bottom);
	CBitmap* pOldBitmap = TempDC.SelectObject(&memBmp);

	TempDC.FillSolidRect(&rcClientTemp, RGB(0, 0, 0));

	rcClientTemp.left++;
	rcClientTemp.top++;
	rcClientTemp.right--;
	rcClientTemp.bottom--;
	TempDC.FillSolidRect(&rcClientTemp, RGB(255, 255, 255));

	if (nBeginTransparent <= nEndTransparent)
	{
		rcClientTemp.bottom = rcClientTemp.top + rc.Height() / 2;
		DrawVerticalTransition(dcDes, TempDC, rcClientTemp, nBeginTransparent ,nEndTransparent);

		rcClientTemp.top = rcClientTemp.bottom;
		rcClientTemp.bottom = rc.bottom - 1;
		DrawVerticalTransition(dcDes, TempDC, rcClientTemp, 90 ,90);
	}
	else
	{
		rcClientTemp.bottom = rcClientTemp.top + rc.Height() / 2;
		DrawVerticalTransition(dcDes, TempDC, rcClientTemp, 90 ,90);

		rcClientTemp.top = rcClientTemp.bottom;
		rcClientTemp.bottom = rc.bottom - 1;
		DrawVerticalTransition(dcDes, TempDC, rcClientTemp, nBeginTransparent ,nEndTransparent);
	}


	BLENDFUNCTION blend;
	memset( &blend, 0, sizeof( blend) );
	blend.BlendOp= AC_SRC_OVER;
	blend.SourceConstantAlpha = 96; // 透明度	
 	//左
 	dcDes.AlphaBlend(rc.left, rc.top + 2, 2, rc.Height() - 4, &TempDC, rc.left, rc.top + 2, 2, rc.Height() - 4, blend);
  	//上中
  	dcDes.AlphaBlend(rc.left + 2, rc.top, rc.Width() - 4, 2, &TempDC, rc.left + 2, rc.top, rc.Width() - 4, 2, blend);
  	//右
  	dcDes.AlphaBlend(rc.right - 2, rc.top + 2, 2, rc.Height() - 4, &TempDC, rc.right - 2, rc.top + 2, 2, rc.Height() - 4, blend);
  	//下
  	dcDes.AlphaBlend(rc.left + 2, rc.bottom - 2, rc.Width() - 4, 2, &TempDC, rc.left + 2, rc.bottom - 2, rc.Width() - 4, 2, blend);


	blend.SourceConstantAlpha = 32;
 	//左上	
 	dcDes.AlphaBlend(rc.left, rc.top, 1, 1, &TempDC, rc.left, rc.top, 1, 1, blend);

  	//右上
  	dcDes.AlphaBlend(rc.right - 1, rc.top, 1, 1, &TempDC, rc.right - 1, rc.top, 1, 1, blend);
 
  	//左下
  	dcDes.AlphaBlend(rc.left, rc.bottom - 1, 1, 1, &TempDC, rc.left, rc.bottom - 1, 1, 1, blend);

  	//右下
  	dcDes.AlphaBlend(rc.right - 1, rc.bottom - 1, 1, 1, &TempDC, rc.right - 1, rc.bottom - 1, 1, 1, blend);
  

	blend.SourceConstantAlpha = 64;
	//左上	
	dcDes.AlphaBlend(rc.left, rc.top + 1, 1, 1, &TempDC, rc.left, rc.top + 1, 1, 1, blend);
	dcDes.AlphaBlend(rc.left + 1, rc.top, 1, 1, &TempDC, rc.left + 1, rc.top, 1, 1, blend);

	//右上
	dcDes.AlphaBlend(rc.right - 1, rc.top + 1, 1, 1, &TempDC, rc.right - 1, rc.top + 1, 1, 1, blend);
	dcDes.AlphaBlend(rc.right - 2, rc.top, 1, 1, &TempDC, rc.right - 2, rc.top, 1, 1, blend);

	//左下
	dcDes.AlphaBlend(rc.left, rc.bottom - 2, 1, 1, &TempDC, rc.left, rc.bottom - 2, 1, 1, blend);
	dcDes.AlphaBlend(rc.left + 1, rc.bottom - 1, 1, 1, &TempDC, rc.left + 1, rc.bottom - 1, 1, 1, blend);

	//右下
	dcDes.AlphaBlend(rc.right - 2, rc.bottom - 1, 1, 1, &TempDC, rc.right - 2, rc.bottom - 1, 1, 1, blend);
	dcDes.AlphaBlend(rc.right - 1, rc.bottom - 2, 1, 1, &TempDC, rc.right - 1, rc.bottom - 2, 1, 1, blend);
	return 0;
}
开发者ID:boboding，项目名称:Boboding，代码行数:84，代码来源:ControlBase.cpp


注：本文中的CDC::AlphaBlend方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。