C / C++ / MFC

31-May-09 22:17

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 22:35

31-May-09 22:35

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 23:17

31-May-09 23:17

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 23:23

31-May-09 23:23

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 23:29

31-May-09 23:29

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 23:44

31-May-09 23:44

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 23:57

31-May-09 23:57

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

CPallini1-Jun-09 0:04

CPallini

1-Jun-09 0:04

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 | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

randomrockers1-Jun-09 0:22

1-Jun-09 0:22

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...

tolw1-Jun-09 0:36

1-Jun-09 0:36

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...

tolw1-Jun-09 0:34

1-Jun-09 0:34

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

Refresh Desktop programatically

CPallini31-May-09 22:48

CPallini

31-May-09 22:48

You should send the WM_CLOSE message to the Windows Picture and Fax Viewer main window.
Smile | :)

krishnakumartm31-May-09 22:05

krishnakumartm

31-May-09 22:05

Hi,

I need to refresh the desktop after hiding the elements on desktop.

I am hiding the desktop content but failed to refesh desktop.

if i do right click refresh or simple F5 refresh is happening but how to do this programatically.

Thanks,

----------------------------
KRISHNA KUMAR T M

Re: Refresh Desktop programatically

«_Superman_»31-May-09 22:10

Re: Refresh Desktop programatically

31-May-09 22:10

Did you try UpdateWindow on the desktop window handle.
Take desktop window handle using GetDesktopWindow

«_Superman_»
I love work. It gives me something to do between weekends.

khan++31-May-09 22:59

khan++

31-May-09 22:59

I found this code in one of the forums here:

SHChangeNotify(SHCNE_ASSOCCHANGED, SHCNF_IDLIST, NULL, NULL);

Be sure to include "shlobj.h"

this is this.

String check

pandit8431-May-09 21:55

pandit84

31-May-09 21:55

HI ,
How to check whether a string does not contain any data other that 'A' - 'Z' or '0' - '9'
is there any API available

Re: String check

«_Superman_»31-May-09 22:17

How to retrive console's code page?

31-May-09 22:17

You could use CString::SpanExcluding if you're using MFC.
Otherwise use the strcspn function.

«_Superman_»
I love work. It gives me something to do between weekends.

Re: String check

Nibu babu thomas31-May-09 23:13

Nibu babu thomas

31-May-09 23:13

pandit84 wrote:
How to check whether a string does not contain any data other that 'A' - 'Z' or '0' - '9'

You can use _istalnum, _isalnum function...

bool IsValidAlNumStr( LPCTSTR lpctszStr )
{
  while( *lpctszStr )
  {
     if( !_istalnum(*lpctszStr ))
        return false;

     ++lpctszStr;
  }

  return true;
}

Nibu babu thomas
Microsoft MVP for VC++

Code must be written to be read, not by the compiler, but by another human being.

Programming Blog: http://nibuthomas.wordpress.com

birajendu31-May-09 21:43

birajendu

31-May-09 21:43

Hi,

How can i retrive console's code page information from a c++ application.

I need the similar information as we got from "chcp" command.

Thanks in advance.

birajendu
CyberG India
Delhi
India

Re: How to retrive console's code page?

«_Superman_»31-May-09 22:08

Re: How to retrive console's code page?

31-May-09 22:08

The active code page can be retrieved using GetACP() function.

«_Superman_»
I love work. It gives me something to do between weekends.

birajendu1-Jun-09 2:35

birajendu

1-Jun-09 2:35

Thanks,

still i have some problem.

When i run the application on a japanese XP/Vista the GetACP() gave me 932 whichi is correct.
Than i changed the code page to 437 thru MOD CON CODEPAGE SELECT=437 command. after this command also GetACP() function returns 932 in both XP and Vista machines. Yes i am running the application in same console in which i have changed the code page.. Can you please suggest whre i am doing wrong..?

birajendu
CyberG India
Delhi
India

Re: How to retrive console's code page?

norish1-Jun-09 7:06

norish

1-Jun-09 7:06

Try GetConsoleCP().

Incorrect argc if "\" is not appended by escape character [modified]

s v joshi31-May-09 21:01

s v joshi

31-May-09 21:01

Following CLI resurns me a correct argc as 5 (1 name of exe and 4 parameters)
-targetpath "C:\tmp" -targetserver vm-w23-btk02\sql2k5

but if i add \ after tmp , argc is 3
-targetpath "C:\tmp\" -targetserver vm-w23-btk02\sql2k5

so main function ignores all the parameters after "C:\tmp\" and return always 3
but if i put a escape character as "C:\tmp\\" then argc is correct as 5
but since these command is entered by user on command prompt , it is not advisable to ask user to put escape character at the end so what is a soluation to get correct number of count.

Why \ at then end of c:\tmp ignores rest of the parameters ?
Without putting a escape character as "C:\tmp\\" , How can i get correct argc ?
Also if i removed double quotes , then its returns correct argc , Only if a path include quotes and ends with \ then argc is incorrect.

int cMyclass::Main(int argc, char **argv)
{
return 0
}

-Thanks
Sandeep

modified on Monday, June 1, 2009 2:20 AM

Re: Incorrect argc if "\" is not appended by escape character

«_Superman_»31-May-09 21:18