[Qt&MFC] 各种方式的图像读取（OpenCv、Halcon）

void CQRCodeDemoDlg::OnBnClickedOpenImage()//打开图像
{
   CImage img;
   img.Load( _T("C:\Users\Aministrator\Desktop\111.jpg"));
   CWnd *pWnd = GetDlgItem(IDC_PIC);
   //获得当前窗口(IDC_PIC)的DC,传给一个CDC类的指针,因为画图往往是在DC中画的,这样获得当前窗口的DC就能在内存中绘图了
   CDC *pDC = pWnd->GetDC();
   RECT rect;
   //获得当前窗口的客户区域
   pWnd->GetClientRect(&rect);
   //自适应显示
   SetStretchBltMode(pdc->m_hDC,STRETCH_HALFTONE); 
   img.Draw(pDC->m_hDC,rect);
   ReleaseDC(pDC);
}

void CQRCodeDemoDlg::OnBnClickedOpenImage()//打开图像
{
	Invalidate();    //刷新窗口,以便清除上一次显示的图片
	int width, height;
	CImage  image;
	CRect   rect;
	//创建打开图片的文件路径对话框
	CFileDialog dlg(TRUE, NULL, NULL, 0, _T("All Files (*.*)|*.*|BMP (*.bmp)|*.bmp|DIB (*.dib)|*.dib|EMF (*.emf)|*.emf|GIF (*.gif)|*.gif|ICO (*.ico)|*.ico|JPG (*.jpg)|*.jpg|WMF (*.wmf)|*.wmf||"), NULL);
	if (dlg.DoModal() == IDOK)
	{		
		CString FilePathName = dlg.GetPathName();
		image.Load(FilePathName);
		CDC* pDC = GetDlgItem(IDC_STATIC_PIC)->GetDC();//获取picture的DC  
		HDC hDC = pDC->GetSafeHdc();// 获取 HDC(设备句柄) 来进行绘图操作
		GetDlgItem(IDC_STATIC_PIC)->GetClientRect(&rect);//获取Picture Control控件的大小
		//获取图片的宽 高度  
		width = image.GetWidth();
		height = image.GetHeight();
		// 求出picture control的宽和高
		int rect_w = rect.Width();
		int rect_h = rect.Height();
		//当图片比绘图区域小
		if (width  rect_h)
		{
			double scale = (double)rect_h / (double)height; //缩放的比例因子
			int tx = (int)(rect_w - width*scale) / 2;
			int ty = 0;
			SetRect(rect, tx, ty, tx + width*scale, rect_h); //设置新的矩阵区域
			image.Draw(hDC, rect);//将图片绘制到picture表示的区域内  
			ReleaseDC(pDC);
		}
	}
}

namedWindow("view",WINDOW_AUTOSIZE);
//设置依附关系, 将cv窗口嵌入MFC主要是下述代码起作用了.
HWND hWnd = (HWND)cvGetWindowHandle("view");
HWND hParent = ::GetParent(hWnd);
::SetParent(hWnd,GetDlgItem(IDC_RECT1)->m_hWnd);
::ShowWindow(hParent,SW_HIDE);

void CQRCodeDemoDlg::OnBnClickedOpenImage()//打开图像
{
	// TODO: 在此添加控件通知处理程序代码
    CString picPath;   //定义图片路径变量服务器托管网  
	CFileDialog dlg(TRUE, NULL, NULL, OFN_HIDEREADONLY | 
		OFN_OVERWRITEPROMPT|OFN_ALLOWMULTISELECT,   NULL, this);   //选择文件对话框  
 
	if(dlg.DoModal() == IDOK)  
	{  
		picPath= dlg.GetPathName();  //获取图片路径  
	}  
	//CString to string  使用这个方法记得字符集选用“使用多字节字符”，不然会报错  
	string picpath=picPath.GetBuffer(0);    	
	org=imread(picpath);     
    imagedst;  
	//以下操作获取图形控件尺寸并以此改变图片尺寸  
	CRect rect;  
	//使用GetDlgItem函数来访问对话框中的控件
	GetDlgItem(IDC_RECT1)->GetClientRect(&rect); 
	//Rect dst(rect.left,rect.top,rect.right,rect.bottom);  
	resize(org,imagedst,cv::Size(rect.Width(),rect.Height()));   
	imshow("view",imagedst);
}

void CQRCodeDemoDlg::OnBnClickedOpenImage()//打开图像
{
    HObject  ho_Image;
    HTuple HWindowID;
    CRect Rect;
    HTuple m_HWindowID;
    HTuple m_ImageWidth,m_ImageHeight;
    //显示静态图片
    ReadImage(&ho_Image, "C:/Users/lenovo/Desktop/test.jpg");
    CWnd * pWnd = GetDlgItem( IDC_STATIC);
    HWindowID = (Hlong)pWnd->m_hWnd;//获取父窗口句柄
    pWnd->GetWindowRect(&Rect);
    OpenWindow(0,0,Rect.Width(),Rect.Height(),HWindowID,"visible","",&m_HWindowID );    
    GetImageSize(ho_Image, &m_ImageWidth, &m_ImageHeight);
    SetPart(m_HWindowID,0,0,m_ImageHeight-1,m_ImageWidth-1);
    DispObj(ho_Image, m_HWindowID);
}

#include "qfiledialog.h"

void MF服务器托管网_Vision_TestForm::slot_setImage()
{
	HObject mImage;	
	HTuple ho_width, ho_height;
	QFileDialog fileDlg(this);
	fileDlg.setWindowTitle("Choose Pictures");
	QStringList qstrFilters;//设置文件过滤器的list
	qstrFilters fromUnicode(pathList[0]).data();
		HTuple FileName;
		FileName = HTuple(name.c_str());   //QString转QByteArray的方法 Latin道标ASCII
		ReadImage(&mImage, FileName);
	}
}