1.1.6-学习Opencv与MFC混合编程之---播放WAV音乐和 alpha融合功能

源代码：http://download.csdn.net/detail/nuptboyzhb/3961698

Alpha融合菜单项

1. 增加alpha融合菜单项，修改相应的属性，建立类向导，编辑消息处理函数。

2. 在消息处理函数中添加如下代码

void CCVMFCView::OnAlphaMix()

{

//TODO: Add your command handler code here

//TODO: Add your command handler code here

IplImage*src1, *src2;

CStringcsAVI="src1 Files(lena.bmp)|*.bmp|";

CString csFilter=csAVI;

CStringcsFilter2="src2 Files(gs76.bmp)|*.bmp|";

CStringname[]={"","bmp",""};

CStringstrFileName;

CStringstrExtension;

CFileDialogFileDlg(true,NULL,NULL,OFN_HIDEREADONLY,csFilter);

if(FileDlg.DoModal()==IDOK ) { // 选择了文件名

strFileName= FileDlg.m_ofn.lpstrFile;

if(FileDlg.m_ofn.nFileExtension == 0) { // 无文件后缀

strExtension= name[FileDlg.m_ofn.nFilterIndex];

strFileName= strFileName + '.' + strExtension;

// 加文件后缀

}

src1=cvLoadImage(strFileName);

if(src1)

{

MessageBox("还需要打开一张图片！");

}

CFileDialog FileDlg(true,NULL,NULL,OFN_HIDEREADONLY,csFilter2);

if(FileDlg.DoModal()==IDOK ) { // 选择了文件名

strFileName= FileDlg.m_ofn.lpstrFile;

if(FileDlg.m_ofn.nFileExtension == 0) { // 无文件后缀

strExtension= name[FileDlg.m_ofn.nFilterIndex];

strFileName= strFileName + '.' + strExtension;

// 加文件后缀

}

src2=cvLoadImage(strFileName);

cvNamedWindow("src1",CV_WINDOW_AUTOSIZE);

cvMoveWindow("src1",300,300);

cvShowImage("src1",src1);

cvNamedWindow("src2",CV_WINDOW_AUTOSIZE);

cvMoveWindow("src2",300+src1->width,300);

cvShowImage("src2",src2);

intx = 112;

int y = 123;

int width =src2->width;

int height =src2->height;

double alpha = 0.5;

double beta = 1-alpha;

cvSetImageROI(src1, cvRect(x,y,width,height));

cvSetImageROI(src2, cvRect(0,0,width,height));

cvAddWeighted(src1, alpha, src2, beta,0.0,src1);

cvResetImageROI(src1);

cvNamedWindow( "Alpha_blend",CV_WINDOW_AUTOSIZE );

cvMoveWindow("Alpha_blend",350+src1->width+src2->width,300);

cvShowImage( "Alpha_blend", src1 );

cvWaitKey(0);

cvReleaseImage(&src1);

cvReleaseImage(&src2);

}

}

}

播放wav音乐

1.插入资源（插入->资源->定制->(输入WAVA））

2.在resources中找到"WAVA"文件，打开有个IDR_WAVA1

3.右键->import->浏览后缀名为.wav的音频文件

4.在CXXXXView的构造函数中添加：

PlaySound(MAKEINTRESOURCE(IDR_TAOBAO_SENT_SOUND),AfxGetResourceHandle(),SND_ASYNC|SND_RESOURCE);

5.在该文件的上方，添加头文件#include"mmsystem.h"

6.工程->设置->连接->库模板添加"winmm.lib"