Comments by the vacuum

the vacuum 7-May-14 5:44am View

Thanks for your reply?, Sorry, I'm new in MFC, I couldn't get what you explained?
Did you mean to use splitter window?
If so.. for example I have splitted the window to two part with two columns and one row ie Pan(0, 0) & Pan(0, 1).
Then if I need to display first opening image file(using CDocument::OnOpenDocument) in Splitter Pan(0, 1), how can I do this? where I specify to display it in second splitter pan(0,1)?
I'm using CView::OnDraw to display the image. The image have been copy to a memory dc before writing to the window. Can I use this handle to do..?
What I understanding that each splitter pan in splitter window has a handle & I can map the image file or memory dc to that handle. Is it right? If so how can I get the handle of a particular splitter pan?
Also, I have implemented facility for zooming and panning image. For its calculations I'm using size of frame that displaying particular image file. So I have to get size of the window(splitter) pan where a particular image is displayed for zooming and panning it individually?

the vacuum 29-Apr-14 3:45am View

how can extend the application window to second monitor?

the vacuum 27-Mar-14 1:07am View

Thank you very much for the solution...
Sorry for the inconvenience I couldn't understand what you mean by the statement
"If you want to shift the origin, than you have also to change the x and y by the difference divided by zoom factor."
Do you mean x & y of the source(xSrc & ySrc parameters in StretchBlt) or the destination window (x & y parameters)?
another doubt is
what you mean by "difference" difference between which values?

Currently my program working properly except this requirement. I had analyzed image processing libraries like CxImage on the starting, but as i application is simple one I don't need them.
My doubt about StretchBlt is about the mapping of image to destination window while it varies. For example my image size is 100 x 100 and my destination window size is 50 x 70 then In to which pixel of the destination rectangle the image pixel(50, 50) will be displayed?
Also if the destination rectangle size changes to (500 x 600) then to where the image pixel(50, 50)will be mapped to?.
I expect, if find a solution to calculate the mapping between the image pixels to the destination pixel, the image pixels can be relocated to any pixel in window coordinates.

My understanding is that the CSrollView::GetScrollPosition method gives the documents width & height point in left top position of scroll window. Like that have any function available in CView?

the vacuum 26-Mar-14 2:08am View

Anyway I avoided CSrollView and used CView ...
Thanks for helps..........

the vacuum 20-Mar-14 5:00am View

I tried that, but the mouse click event in toolbar is not forwarding to my view class..

the vacuum 17-Mar-14 0:18am View

thank you for your support............

the vacuum 14-Mar-14 6:33am View

I got two solutions from the link
http://stackoverflow.com/questions/6691292/create-cimage-from-byte-array
I have checked both of them and are working...

the vacuum 14-Mar-14 2:59am View

Unfortunately above code not working, it only creating a black Image in CImage object. Can I use memory DC in CreateDIBSection function?.
Or
if use CImage::Create method how can set the image byte array values?

the vacuum 14-Mar-14 0:41am View

Deleted

Unfortunately above code not working, it only creating a black Image in CImage object. Can I use memory DC in CreateDIBSection function?.
Or
if I use CImage::Create method hoe I can set the image bite?

the vacuum 13-Mar-14 12:32pm View

Deleted

Unfortunately above code not working, it only creating a black Image in CImage object. Can I use memory DC in CreateDIBSection function?.

the vacuum 13-Mar-14 12:29pm View

Deleted

can I use memory dc in CreateDIBSection?

the vacuum 13-Mar-14 12:26pm View

Deleted

unfortunately, this not working, it creating a black document only

the vacuum 12-Mar-14 1:44am View

BOOL CDCMImage::LoadFromFile(LPCTSTR pszFileName)
{
m_oeImgType = IMG_NONE;
if(TRUE != m_CImage.IsNull())
m_CImage.Destroy();
CDicomImage oCDicomImage;
CString cstrfilename= pszFileName;
cstrfilename.Replace(_T('\\'), _T('//'));
char achfilename [200]= "";
USES_CONVERSION;
strcpy(achfilename,T2A(cstrfilename));
if(TRUE == oCDicomImage.OpenDCMFile((const char*)achfilename))
{
m_oeImgType = IMG_DCM;
void *pvDibData = NULL;
CSize ImgSize(0, 0);
ImgSize = oCDicomImage.DCMImageDIBData(pvDibData);

if((ImgSize != CSize(-1, -1)) && (pvDibData != NULL))
{
BITMAPINFO oBMI;
oBMI.bmiHeader.biSize = sizeof(oBMI);
oBMI.bmiHeader.biWidth = ImgSize.cx;
oBMI.bmiHeader.biHeight = -ImgSize.cy;
oBMI.bmiHeader.biPlanes = 1;
oBMI.bmiHeader.biBitCount = 24;
oBMI.bmiHeader.biCompression = BI_RGB;
oBMI.bmiHeader.biSizeImage = 0;
// hbmp Should destroy after use

m_hbmpDCM = CreateDIBSection(NULL, &oBMI, DIB_RGB_COLORS, (void**)&pvDibData, NULL, NULL);
if(m_hbmpDCM)
{
m_CImage.Attach(m_hbmpDCM);
}
if(pvDibData)
{
delete pvDibData;
pvDibData = NULL;
return true;
}
}
}
else
return false;
}

Given code is part of my program for reading a DICOM file from directory and to attach the dicom image data as a CImage type member of my class "CDCMImage". The pixel data of the reading DICOM image will get at "pvDibData" by call to function "oCDicomImage.DCMImageDIBData(pvDibData)" and . Upto that part part is correct I have already verified it. My problem is in remaining part which create CImage using the pixel data. Issue is how to create a CImage from the pixel data and other image details(image size, bit count etc.)which I already have?.
As you can view in code, I used "CreateDIBSection" windows function with HDC parameter (first parameter )as creating CImage. I'm not sure whether it is correct. Can I use it like that?

the vacuum 10-Oct-13 2:02am View

Only need low frequency signals, so 11KHZ sampling frequency & 16 bit resolution is enough.My plan is to do it as part by part so I first implemented part to capture the sound from mic and to record it with required quality as .wav file, it's working. Now my main issue is to transfer it to the destination system through serial COM port within my transmission limits(100 Kbps) without any loss of data. I gone through serial comm related articles, my understanding is that.. have to do comm buffer management & flow control mechanisms for the effective transfer(and for playing it real time at the destination PC).

Comments by the vacuum (Top 14 by date)