CvvImage was a highgui class that was removed from OpenCV from ver. 2.2.
It had 2 methods relevant to drawing in a Win32/MFC application.
#if defined WIN32 || defined _WIN32
/* draw part of image to the specified DC */
virtual void Show( HDC dc, int x, int y, int width, int height,
int from_x = 0, int from_y = 0 );
/* draw the current image ROI to the specified rectangle of the destination DC */
virtual void DrawToHDC( HDC hDCDst, RECT* pDstRect );
#endif
Unfortunately, if you don't use the HighGui windows, then after you grab the frame you'll have to display it yourself using the Windows APIs (e.g. Win32 or MFC).
The relevant Win32/MFC functions to do this are ::SetDIBitsToDevice or ::StretchDIBits.
You can refer to c:\OpenCV_install_folder\modules\highgui\src\window_w32.cpp to see how it's done there.
What is CvvImage?? Please note, that OpenCV has its own method for displaying images, here is sample code http://answers.opencv.org/question/279/ . But if you want to use any other GUI framework, you have to do it by yourself.
CvvImage::DrawTOHDC was available before OpenCV 2.2.
You could retrieve some old code from somewhere
Anyway you can check my own class PkMatToGDI that uses same principle of DrawTOHDC http://www.pklab.net/?&id=390&lang=EN...
An interesting implementation is here: http://www.codeproject.com/Tips/81521... The author creates a namedWindow as child of MFC Dialog over a Dialog ctrol. After this he uses cv::imshow
Asked: 2012-08-06 02:48:42 -0600
Seen: 1,686 times
Last updated: May 06 '15
