代码.txt

实现图像的淡入淡出效果

		// Getting bitmap size
		/*BITMAP bm;
		GetObject(m_hBitmap, sizeof(BITMAP), &bm);

		// Creating new bitmap and receive pointer to it's bits.
		HBITMAP hTargetBitmap;
		void *pBuffer;

		int nCorrectedWidth = ((bm.bmWidth + 3) / 4 ) * 4;

		// Initialize DIBINFO structure
		DIBINFO  dibInfo;
		dibInfo.bmiHeader.biBitCount = 24;
		dibInfo.bmiHeader.biClrImportant = 0;
		dibInfo.bmiHeader.biClrUsed = 0;
		dibInfo.bmiHeader.biCompression = 0;
		dibInfo.bmiHeader.biHeight = bm.bmHeight;
		dibInfo.bmiHeader.biPlanes = 1;
		dibInfo.bmiHeader.biSize = 40;
		dibInfo.bmiHeader.biSizeImage = nCorrectedWidth*bm.bmHeight*3;
		dibInfo.bmiHeader.biWidth = nCorrectedWidth;
		dibInfo.bmiHeader.biXPelsPerMeter = 3780;
		dibInfo.bmiHeader.biYPelsPerMeter = 3780;
		dibInfo.bmiColors[0].rgbBlue = 0;
		dibInfo.bmiColors[0].rgbGreen = 0;
		dibInfo.bmiColors[0].rgbRed = 0;
		dibInfo.bmiColors[0].rgbReserved = 0;

		// Create bitmap and receive pointer to points into pBuffer
		HDC hDC = ::GetDC(NULL);
		ASSERT(hDC);
		hTargetBitmap = ::CreateDIBSection(
			hDC,
			(const BITMAPINFO*)dibInfo,
			DIB_RGB_COLORS,
			(void**)&pBuffer,
			NULL,
			0);

		::ReleaseDC(NULL, hDC);


		// Copy source bitmap into the target bitmap.

		// Create 2 device contexts 
		HDC hMemDc = ::CreateCompatibleDC(NULL);
		HDC hTargetDc = ::CreateCompatibleDC(NULL);

		// Select source bitmap into one DC, target into another
		HBITMAP hOldBitmap1 = (HBITMAP) ::SelectObject(hMemDc, m_hBitmap);
		HBITMAP hOldBitmap2 = (HBITMAP) ::SelectObject(hTargetDc, hTargetBitmap);

		// Copy source bitmap into the target one
		::BitBlt(hTargetDc, 0, 0, bm.bmWidth, bm.bmHeight, hMemDc, 0, 0, SRCCOPY);

		// Restore device contexts
		::SelectObject(hMemDc, hOldBitmap1);
		::SelectObject(hTargetDc, hOldBitmap2);

		::DeleteDC(hMemDc);
		::DeleteDC(hTargetDc);*/

		BGRColor* pb=new BGRColor(0,0,0);
		SIZE size;
		HBITMAP hResultBitmap;
		//pb=CSTGapiBuffer::GetDIBits(m_hBitmap);

		/*BITMAP bm2;
		GetObject(m_hb, sizeof(BITMAP), &bm2);

		// Creating new bitmap and receive pointer to it's bits.
		HBITMAP hTargetBitmap2;
		void *pBuffer2;

		int nCorrectedWidth2 = ((bm2.bmWidth + 3) / 4 ) * 4;

		// Initialize DIBINFO structure
		DIBINFO  dibInfo2;
		dibInfo2.bmiHeader.biBitCount = 24;
		dibInfo2.bmiHeader.biClrImportant = 0;
		dibInfo2.bmiHeader.biClrUsed = 0;
		dibInfo2.bmiHeader.biCompression = 0;
		dibInfo2.bmiHeader.biHeight = bm2.bmHeight;
		dibInfo2.bmiHeader.biPlanes = 1;
		dibInfo2.bmiHeader.biSize = 40;
		dibInfo2.bmiHeader.biSizeImage = nCorrectedWidth2*bm2.bmHeight*3;
		dibInfo2.bmiHeader.biWidth = nCorrectedWidth2;
		dibInfo2.bmiHeader.biXPelsPerMeter = 3780;
		dibInfo2.bmiHeader.biYPelsPerMeter = 3780;
		dibInfo2.bmiColors[0].rgbBlue = 0;
		dibInfo2.bmiColors[0].rgbGreen = 0;
		dibInfo2.bmiColors[0].rgbRed = 0;
		dibInfo2.bmiColors[0].rgbReserved = 0;

		// Create bitmap and receive pointer to points into pBuffer
		HDC hDC2 = ::GetDC(NULL);
		ASSERT(hDC2);
		hTargetBitmap2 = ::CreateDIBSection(
			hDC2,
			(const BITMAPINFO*)dibInfo2,
			DIB_RGB_COLORS,
			(void**)&pBuffer2,
			NULL,
			0);

		::ReleaseDC(NULL, hDC2);


		// Copy source bitmap into the target bitmap.

		// Create 2 device contexts 
		HDC hMemDc2 = ::CreateCompatibleDC(NULL);
		HDC hTargetDc2 = ::CreateCompatibleDC(NULL);

		// Select source bitmap into one DC, target into another
		HBITMAP hOldBitmap3 = (HBITMAP) ::SelectObject(hMemDc2, m_hb);
		HBITMAP hOldBitmap4 = (HBITMAP) ::SelectObject(hTargetDc2, hTargetBitmap2);

		// Copy source bitmap into the target one
		::BitBlt(hTargetDc2, 0, 0, bm2.bmWidth, bm2.bmHeight, hMemDc2, 0, 0, SRCCOPY);

		// Restore device contexts
		::SelectObject(hMemDc2, hOldBitmap3);
		::SelectObject(hTargetDc2, hOldBitmap4);

		::DeleteDC(hMemDc2);
		::DeleteDC(hTargetDc2);*/