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HDCHDC 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 DragQueryFilecase 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hDropDeleteDC(s_hdcMem);// 加载位图HBITMAP hBitmap; hBitmap = (HBITMAP)LoadImage(NULL, strFileName, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE | LR_CREATEDIBSECTION); // 位图HDCHDC 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
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