C / C++ / MFC Discussion Boards

Re: How to Associate a File Extension with a Program

Bram van Kampen12-Jul-08 16:08

12-Jul-08 16:08

Hi Mark,

My question was a bit more subtle. I never use the Document Interface, but actually what I was looking for (and since found) was 'CWinapp::RegisterShellFileTypes()'

I am hacking that now in order that my instalation program sets file asociations for rarely used utilities. For example, many european ISP's do not allow DLL's EXE's etc to be send as an e-mail attachment. No Problem, I wrote a utility which converts the binary into a text file, which I gave the extension say '.QXP' I also include in the release, a program that silently (no UI if things go Right) converts the QXP file back. The idea is also that double clicking by the usr on a 'QXP' file should start the conversion back

All this works, and fails gracefully on error. There is one issue remaining, and I'm running out of computers to test it, and that is, what does 'CWinApp::EnableShelOpen()'actually do.( This is subject to another posting).

Regards Smile | :)

Bram van Kampen

why can't I print an icon?

tataxin10-Jul-08 15:33

tataxin

10-Jul-08 15:33

I want to print some icons. Here is my code:

CDC* m_PrintDC;
// attach m_PrintDC with printer success .....

CPoint point(10, 10);
HICON aIcon = AfxGetApp()->LoadIcon(IDI_ICON_CHECKEDBOX);
m_PrintDC->DrawIcon(point, aIcon);

//m_PrintDC->DrawText("xxxxxxxxx", &aRect,DT_SINGLELINE | DT_LEFT);

Here IDI_ICON_CHECKEDBOX is a icon ID that I draw.
But it doesn't work, I don't know why?? I can print some text with DrawText(...).

Anyone know what's wrong here? Thank you in advance.

Re: why can't I print an icon?

Mark Salsbery11-Jul-08 6:34

Mark Salsbery

11-Jul-08 6:34

What's the dpi on the printer DC?

A 32x32 icon will be pretty small on a 1400dpi printer Smile | :)

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: why can't I print an icon?

Bram van Kampen12-Jul-08 16:25

Bram van Kampen

12-Jul-08 16:25

Yes, without other mapping,
about 0.023 inch per side.The final rendering software may pass that off as noise and decide to print a blank page. Smile | :)

Regards

Bram van Kampen

Re: why can't I print an icon?

tataxin13-Jul-08 14:43

tataxin

13-Jul-08 14:43

thank you for your reply!
my printer is HP LaserJet 3052, with 1200dpi.

So do you have any idea what I should do in this case?

Re: why can't I print an icon?

Bram van Kampen15-Jul-08 14:47

Bram van Kampen

15-Jul-08 14:47

Create a New Bitmap of fixed dimensions of your choice, Bitbuild your Icon in it, using stretch mode, and then print this new bitmap.

Regards, Smile | :)

Bram van Kampen

Using getenv

rocktx10-Jul-08 8:17

rocktx

10-Jul-08 8:17

I have a visual c++ program and I am trying to get the value of an environment variable using the getenv function. Seems pretty simple but when i call it in the debugger I get the message "Please enter path for libcpd.pdb." Does anyone know why this happens on this function?

Note: The program compiles and builds witjh no errors. Only when I run it I get the problem

Here are my includes (although I dont think it has anything to do with this):

stdio.h
stdlib.h
iostream.h
cstdlib.h
windows.h

Rock

Re: Using getenv

David Crow10-Jul-08 8:43

David Crow

10-Jul-08 8:43

rocktx wrote:
...I get the message "Please enter path for libcpd.pdb."

See here.

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: Using getenv [modified]

Bram van Kampen12-Jul-08 16:42

Bram van Kampen

12-Jul-08 16:42

What is happening here! Never seen such message using VC 5.00. Missing Libraries? the code would not link! Seems that the latest linker links missing modules to a Mesage Box, leaving an error message to the End User!

That is totally unacceptable behaviour!

Sorry, This is a message given by the Debugger. The error occurred in the Library, but in order to show the window with the Source Code, the Debugger needs the pdb. Just check where this PDB is stored and go to that Directory. Then you'll get a breakpoint at the offending line.

Regards, Dead | X|

Bram van Kampen

modified on Tuesday, July 15, 2008 8:48 PM

get_anchors doesn't return all anchors

Mohammad Tarik10-Jul-08 7:30

Mohammad Tarik

10-Jul-08 7:30

Hello,

I am trying to get all links on an web page. Unfortunately, the "get_anchors" doesn't seem to retrieve all anchor elements. I have pages full of links and all I get are few or none.

I'm using Visual C++ 2003. I have an MFC Dialog application with embedded webbrowser control.

Here's my code: (btw, GetDocument function calls IWebBrowser::get_Document() function and it works fine with things other than getting anchors).

HRESULT hr;
IHTMLDocument2 * pHtmlDoc = GetDocument();
CStringArray sURLArray;

if (pHtmlDoc != NULL)
{
    IHTMLElementCollection * pColl = NULL;
    hr = pHtmlDoc->get_anchors(&pColl);

    if(SUCCEEDED(hr))
    {
        LONG nElem = 0;
        hr = pColl->get_length(&nElem);

        if(SUCCEEDED(hr))
        {
            for(long i = 0; i < nElem; i++)
            {
                _variant_t vIndex(i);

                IDispatch * pDisp2 = NULL;
                hr = pColl->item(vIndex, vIndex, &pDisp2);
                if(SUCCEEDED(hr))
                {
                    IHTMLAnchorElement * pAnchElem = NULL;
                    hr = pDisp2->QueryInterface(IID_IHTMLAnchorElement, (void**) &pAnchElem);
                    if(SUCCEEDED(hr))
                    {
                        BSTR bstrHref;
                        if(SUCCEEDED(pAnchElem->get_href(&bstrHref)))
                        {
                            CString strLink(bstrHref);
                            if(!strLink.IsEmpty())
                                sURLArray.Add(strLink);
                            SysFreeString(bstrHref);
                        }
                        pAnchElem->Release();
                    }
                    pDisp2->Release();
                }
                MessageBox(sURLArray.GetAt(i));
            }
        }
        pColl->Release();
    }
    pHtmlDoc->Release();
}

Taking a look now at the code. I think that I should have used if(FAILED(...)) return; instead of if(SUCCEEDED(...)) .. it would have been more readable without all these brackets.

Any help is appreciated

Thanks

Re: get_anchors doesn't return all anchors

David Crow10-Jul-08 7:32

David Crow

10-Jul-08 7:32

So the value of nElem is simply less than it should be?

Mohammed Tarik wrote:
I think that I should have used if(FAILED(...)) return; instead of if(SUCCEEDED(...)) .. it would have been more readable without all these brackets.

Since nElem is the culprit, everything below it is superfluous.

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: get_anchors doesn't return all anchors

Mohammad Tarik10-Jul-08 7:35

Mohammad Tarik

10-Jul-08 7:35

Yes, and sometimes it's zero.

Re: get_anchors doesn't return all anchors

David Crow10-Jul-08 7:45

David Crow

10-Jul-08 7:45

What URL are you using? I just tried it with a few and get_length() returned the correct value.

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: get_anchors doesn't return all anchors

Mohammad Tarik10-Jul-08 7:58

Mohammad Tarik

10-Jul-08 7:58

I am testing with "flightcenter.co.uk" and "google.com". The first one returns some URLs while the second doesn't return any !!

Re: get_anchors doesn't return all anchors

David Crow10-Jul-08 8:16

David Crow

10-Jul-08 8:16

Mohammed Tarik wrote:
The first one returns some URLs while the second doesn't return any !!

Do the anchors have a name or id attribute?

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: get_anchors doesn't return all anchors

Mohammad Tarik10-Jul-08 8:37

Mohammad Tarik

10-Jul-08 8:37

No, the URLs returned were strange and I couldn't even find their corresponding anchors. They were like "javascript:submitCJ10.....http://somesite"
As you can see from
hr = pColl->item(vIndex, vIndex, &pDisp2);
I am not trying to put any constraints on the returned URLs.

Re: get_anchors doesn't return all anchors

David Crow10-Jul-08 8:41

David Crow

10-Jul-08 8:41

Mohammed Tarik wrote:
No...

get_anchors() only returns those that do.

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: get_anchors doesn't return all anchors

Mohammad Tarik10-Jul-08 8:51

Mohammad Tarik

10-Jul-08 8:51

So, in order to return all the links on a page regardless of name or id attributes, I have to write my own code? Do you know of any other function that can do this?

Thanks a lot for your help

Re: get_anchors doesn't return all anchors

Mohammad Tarik10-Jul-08 9:20

Mohammad Tarik

10-Jul-08 9:20

I found that get_links can do it.

Thanks again.

Re: get_anchors doesn't return all anchors

David Crow10-Jul-08 10:16

David Crow

10-Jul-08 10:16

Doesn't that return LINK and AREA elements?

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: get_anchors doesn't return all anchors

Mohammad Tarik10-Jul-08 11:04

Mohammad Tarik

10-Jul-08 11:04

Well, at the beginning of my first post, I mentioned that I need to get all links on a web page. I chose get_anchors() because I found a sentence mentioning it in one of CP articles where the author said that it is used to get hyperlinks.
I guess that get_links() would do a better job for me after some processing.
Sorry for the inconvenience. Blush | :O

Disk Info

Fedrer10-Jul-08 7:09

Fedrer

10-Jul-08 7:09

Hi,

How can I get the all connected harddrive to my pc and logical drive name corresponding to physical drive?
I think WMI can help me right?, if yes please help mw with any suitable link.

Re: Disk Info

David Crow10-Jul-08 7:35

David Crow

10-Jul-08 7:35

Fedrer wrote:
How can I get the all connected harddrive to my pc and logical drive name corresponding to physical drive?

Use GetLogicalDriveStrings().

"Love people and use things, not love things and use people." - Unknown

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

How do I load asociated file in application from windows explorer????

AlmodJ10-Jul-08 5:48

AlmodJ

10-Jul-08 5:48

Not quite a newbie, but just how do you have the system shell open your application on right click->open? Confused | :confused:

This of course assumes you already associated that file type to your application.
Someone please enlighten me.

Thanks:

Re: How do I load asociated file in application from windows explorer????

Rajesh R Subramanian10-Jul-08 6:07

Rajesh R Subramanian

10-Jul-08 6:07

I am not sure I understand your question properly. How does it matter if you right click and open a file or you double click and open a file? Confused | :confused:

If I got your question right, do have a look at ShellExecute()[^]

Nobody can give you wiser advice than yourself. - Cicero
.·´¯`·->Rajesh<-·´¯`·.

Microsoft MVP - Visual C++[^]

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