C / C++ / MFC

31-May-09 22:41

doubt this will work, try using getPathName() method and ShellExecute or Execute()

Re: reading a .pst file

Stuart Dootson31-May-09 23:11

Stuart Dootson

31-May-09 23:11

Easier said than done, especially if you're new to C++.

The way I'd normally suggest would be to use MAPI - this page[^] has some useful example C++ code, including loading a PST file.

This Codeproject article[^] also has code to extract data out of a PST file - it's written in VB.Net, rather than C++, though.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

opening webcam with MFC

randomrockers31-May-09 21:19

Re: opening webcam with MFC

31-May-09 21:19

Hey guys, I have created a button, called start Camera... Upon clicking the button, the computer will open the webcam(in a new window)...

Do any of u have an idea how do I do that? i know how to open using opencv, however, this is for my project, and my supervisor wants only Visual C++ for the time being, till cascade(which u probably dunno what is it) is completed... and I have to use Visual C++ to open the webcam instead of openCV... got any idea guys??? please help... thanks...

your help will be totally appreciated...
Edit/Delete Message

khan++31-May-09 22:33

khan++

31-May-09 22:33

You will need to study some DirectShow for this.

Here is a simple article which shows a preview from a webcam.

Simultaneous Previewing & Video Capture using DirectShow[^]

this is this.

using ShellExecute to close...

randomrockers31-May-09 21:17

31-May-09 21:17

Hi, i am using ShellExecute to open an image. The image is opened using Windows Picture and Fax Viewer. Now, I have a button, in my dialog(the UI). I want to close the Windows Picture and Fax Viewer, got any idea? here's my code... please help. its kinda urgent... been stuck on this for 3 days... googled it, but nopthing relevant came out.

void CDesignDlg::OnImage()
{
// TODO: Add your control notification handler code here
CFileDialog m_ldFile(TRUE);

{
if ( ! onStart )
{
m_button.SetWindowText("Start Image");
}
else
{
m_button.SetWindowText("Stop Image");
}

onStart ^= 1; // make onStart 0, or 1 respectively

}

if (onStart==0){

if (m_ldFile.DoModal() ==IDOK)
{

CString abc= m_ldFile.GetPathName();
SHELLEXECUTEINFO tiff;
tiff.cbSize = sizeof(SHELLEXECUTEINFO);
tiff.fMask = NULL;
tiff.hwnd = NULL;
tiff.lpVerb = "open";
tiff.lpFile = abc;
tiff.lpParameters= NULL;
tiff.nShow = SW_SHOWNORMAL;
tiff.hInstApp = NULL;
tiff.lpIDList = NULL;
tiff.lpClass = NULL;
tiff.hkeyClass = NULL;
tiff.dwHotKey = NULL;
tiff.hIcon = NULL;
tiff.hProcess = NULL;
tiff.lpDirectory = NULL;
int ReturnCode = ::ShellExecuteEx(&tiff);

UpdateData(TRUE);

}}
else
{
//what should be put here???
}

}

tolw31-May-09 21:35

31-May-09 21:35

I think killing the process might do the trick. To do this you need the process ID. One of the ways to obtain it is:

int ReturnCode = ::ShellExecuteEx(&tiff);
// Get the pid 
DWORD pid = GetProcessID(tiff.hProcess);

....

To kill the process call:

KillProcess( pid );

Let me know if this did the trick Smile | :)

randomrockers31-May-09 22:17

31-May-09 22:17

NOPE... IT DOESNT... i get the following errors
c:\documents and settings\user\my documents\visual studio 2005\projects\design\designdlg.cpp(242) : error C2065: 'GetProcessID' : undeclared identifier
c:\documents and settings\user\my documents\visual studio 2005\projects\design\designdlg.cpp(245) : error C2065: 'KillProcess' : undeclared identifier

maybe you like to see the results... http://yfrog.com/11picture2mzjpx[^]

stop does go back to start when i click it, but picture doesnt close

tolw31-May-09 22:23

31-May-09 22:23

Do you have the proper include's? Try:

#include Windows.h

#include Winbase.h

Also as CPallini suggests below, you can try sending a WM_CLOSE to the window... Yo get the handle from the ShellExecuteEx method (in tiff.hwnd)

randomrockers31-May-09 22:29

31-May-09 22:29

WM_CLOSE to window.. for example? I tried, but keep getting different error, went to the library of SHELLEXECUTE, all said is optional for hwnd... so i cannot get any example... yup. i do have the proper includes...

tolw31-May-09 22:44

31-May-09 22:44

Foret the hwnd - I was wrong anyway Big Grin | :-D

Getting back to GetProcessID:

Try reading about the function in MSDN - all the info is there.
If your includes are ok maybe you're missing a lib?
Did you link to Kernel32.dll?

Select your project propertied, go to Linker -> Input -> Additional Dependencies
And type in Kernel32.dll.

randomrockers31-May-09 22:57

31-May-09 22:57

yup i know about the site... I am using Visual C++6 there is no additional dependencies there... Frown | :(

i try puting it in object modules, but an error came out saying cannot open Kernel32.dll

CPallini31-May-09 23:04

CPallini

31-May-09 23:04

tolw wrote:
If your includes are ok maybe you're missing a lib?

Are you kidding? AFAIK "undeclared identifier" error has nothing to do with the linker.
Smile | :)

randomrockers31-May-09 23:22

31-May-09 23:22

hmm... alright... i trying to call hWnd as a handle... and trying other methods... so once i get something, i let u guys know... but, if you guys got any idea, let me know too.. thanks...

tolw31-May-09 23:36

31-May-09 23:36

Check out this thread also:

http://www.codeproject.com/Forums/1647/C-Cplusplus-MFC.aspx?fid=1647&select=2972272&fr=7846#xx2972272xx[^]

Apperantly people have had problems getting it to work before...

tolw31-May-09 23:34

31-May-09 23:34

whoops - right you are - sorry about that - juggling between CP and my own projects can do that to you Blush | :O