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：/article/1392144.html

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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》

/article/1392148.html

2. 《Windows界面编程第十篇位图显示特效百叶窗效果》

/article/1392147.html

3. 《Windows界面编程第十一篇位图显示特效随机积木效果》

/article/1392146.html

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》

/article/1392145.html

5. 《Windows界面编程第十三篇位图显示特效合集》

/article/1392144.html

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)》（/article/1392160.html），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/article/1392144.html）。



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：/article/1392144.html

欢迎关注微博：http://weibo.com/MoreWindows