Windows界面编程第十三篇 位图显示特效合集

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转载请标明出处，原文地址：http://blog.csdn.net/morewindows/article/details/8696730

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Windows界面编程之位图显示特效系列目录：

1. 《Windows界面编程第九篇位图显示特效交错效果》

http://blog.csdn.net/morewindows/article/details/8696720

2. 《Windows界面编程第十篇位图显示特效百叶窗效果》

http://blog.csdn.net/morewindows/article/details/8696722

3. 《Windows界面编程第十一篇位图显示特效随机积木效果》

http://blog.csdn.net/morewindows/article/details/8696724

4. 《Windows界面编程第十二篇位图显示特效飞入效果与伸展效果》

http://blog.csdn.net/morewindows/article/details/8696726

5. 《Windows界面编程第十三篇位图显示特效合集》

http://blog.csdn.net/morewindows/article/details/8696730

前面的四篇已经介绍了位图的交错效果、百叶窗效果、随机积木效果、飞入效果与伸展效果。下面用一个程序将展示这些效果。这里给出主要代码（下载地址见：http://download.csdn.net/detail/morewindows/5177047）。代码中的DragAcceptFiles可以参考《Windows界面编程第七篇文件拖拽(文件拖放)》（http://blog.csdn.net/morewindows/article/details/8634451），主要是为了能将位图文件拖入到窗口中。

LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	static int   s_nShow;
	static HDC   s_hdcMem;
	static int   s_nWidth, s_nHeight;

	switch (message)
	{
	case WM_CREATE:
		{
			DragAcceptFiles(hwnd, TRUE);   
			// 加载位图
			HBITMAP hBitmap;  
			hBitmap = (HBITMAP)LoadImage(NULL, "107.bmp", IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE | LR_CREATEDIBSECTION);  
			if (hBitmap == NULL)  
			{  
				MessageBox(hwnd, "LoadImage failed", "Error", MB_ICONERROR);  
				exit(0);  
			}
			// 位图HDC
			HDC hdc = GetDC(hwnd);
			s_hdcMem = CreateCompatibleDC(hdc);
			SelectObject(s_hdcMem, hBitmap);
			ReleaseDC(hwnd, hdc);

			// 计算位图宽高
			BITMAP bm;
			GetObject(hBitmap, sizeof(bm), &bm);
			s_nWidth = bm.bmWidth;
			s_nHeight = bm.bmHeight;
			

			s_nShow = 0;
		}
		return 0;


    case WM_KEYDOWN:   
        switch (wParam)  
        {  
        case VK_ESCAPE: //按下Esc键时退出   
            SendMessage(hwnd, WM_DESTROY, 0, 0);  
            return 0;  
        }  
        break; 

	case WM_PAINT:
		{
			HDC             hdc;  
			PAINTSTRUCT     ps;  
			hdc = BeginPaint(hwnd, &ps);
			switch (s_nShow)
			{
			case 0:
				BitBlt(hdc, 0, 0, s_nWidth, s_nHeight, s_hdcMem, 0, 0, SRCCOPY);
				break;
			
				// 水平交错
			case 1:
				AnimateDraw_StaggeredHorizontal(hdc, s_hdcMem, s_nWidth, s_nHeight);
				break;
				// 垂直交错
			case 2:
				AnimateDraw_StaggeredVertical(hdc, s_hdcMem, s_nWidth, s_nHeight);
				break;
				
				// 水平百叶窗
			case 3:
				AnimateDraw_JalousieHorizontal(hdc, s_hdcMem, s_nWidth, s_nHeight);
				break;
				// 垂直百叶窗
			case 4:
				AnimateDraw_JalousieVertical(hdc, s_hdcMem, s_nWidth, s_nHeight);
				break;
				
				// 随机积木
			case 5:
				AnimateDraw_RandomBlocks(hdc, s_hdcMem, s_nWidth, s_nHeight);
				break;
				
				// 飞入 从上往下
			case 6:
				AnimateDraw_FlyingTopToBottom(hdc, s_hdcMem, s_nWidth, s_nHeight, 2, FALSE);
				break;
				// 飞入 从下往上
			case 7:
				AnimateDraw_FlyingBottomToTop(hdc, s_hdcMem, s_nWidth, s_nHeight, 2, FALSE);
				break;
				// 飞入 从左往右		
			case 8:
				AnimateDraw_FlyingLeftToRight(hdc, s_hdcMem, s_nWidth, s_nHeight, 2, FALSE);
				break;
				// 飞入 从右往左
			case 9:
				AnimateDraw_FlyingRightToLeft(hdc, s_hdcMem, s_nWidth, s_nHeight, 2, FALSE);
				break;

				// 伸展 从上往下
			case 10:
				AnimateDraw_FlyingTopToBottom(hdc, s_hdcMem, s_nWidth, s_nHeight);
				break;
				// 伸展 从下往上
			case 11:
				AnimateDraw_FlyingBottomToTop(hdc, s_hdcMem, s_nWidth, s_nHeight);
				break;
				// 伸展 从左往右		
			case 12:
				AnimateDraw_FlyingLeftToRight(hdc, s_hdcMem, s_nWidth, s_nHeight);
				break;
				// 伸展 从右往左
			case 13:
				AnimateDraw_FlyingRightToLeft(hdc, s_hdcMem, s_nWidth, s_nHeight);
				break;
			}
			if (s_nShow != 0)
			{
				s_nShow = 0;
				InvalidateRect(hwnd, NULL, FALSE);
			}
			EndPaint(hwnd, &ps);
		}
		return 0;


	case WM_COMMAND:
		if (LOWORD(wParam) >= 40001 && LOWORD(wParam) <= 40013)
		{
			s_nShow = LOWORD(wParam) - 40000;
			InvalidateRect(hwnd, NULL, TRUE);
			return 0;
		}
		break;


		// 文件拖拽第三步 DragQueryFile and DragQueryFile
	case WM_DROPFILES:
		{
			HDROP hDrop = (HDROP)wParam;
			UINT nFileNum = DragQueryFile(hDrop, 0xFFFFFFFF, NULL, 0); // 拖拽文件个数
			char strFileName[MAX_PATH];
			DragQueryFile(hDrop, 0, strFileName, MAX_PATH);//获得拖曳的文件名
			DragFinish(hDrop);      //释放hDrop

			DeleteDC(s_hdcMem);
			// 加载位图
			HBITMAP hBitmap;  
			hBitmap = (HBITMAP)LoadImage(NULL, strFileName, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE | LR_CREATEDIBSECTION);  
			// 位图HDC
			HDC hdc = GetDC(hwnd);
			s_hdcMem = CreateCompatibleDC(hdc);
			SelectObject(s_hdcMem, hBitmap);
			ReleaseDC(hwnd, hdc);
			
			// 计算位图宽高
			BITMAP bm;
			GetObject(hBitmap, sizeof(bm), &bm);
			s_nWidth = bm.bmWidth;
			s_nHeight = bm.bmHeight;
			
			InvalidateRect(hwnd, NULL, TRUE);
		}
		return 0; 


	case WM_DESTROY:
		DeleteDC(s_hdcMem);
		PostQuitMessage(0);
		return 0;
	}
	return DefWindowProc(hwnd, message, wParam, lParam);
}

下面是程序所展示的一种显示效果（图片不能打开，请访问http://blog.csdn.net/morewindows/article/details/8696730）。

更多显示效果可以参考前面的交错效果、百叶窗效果、随机积木效果、飞入效果与伸展效果博客中的示例。

本文配套程序下载地址为：http://download.csdn.net/detail/morewindows/5177047

转载请标明出处，原文地址：http://blog.csdn.net/morewindows/article/details/8696730

欢迎关注微博：http://weibo.com/MoreWindows