Problem with CreateProcess - C / C++ / MFC Discussion Boards

Tara143-Jul-06 3:12

3-Jul-06 3:12

Hi,

I want to add some code when the 'X' button on the top right of a dialog box is pressed. For example if the window size is changed, maximises/minimised we add the code in OnSize() function (WM_SIZE).

Please can you tell me how to know when the 'X ' button is pressed.

Thanks,
Tara

Fortitudine Vincimus!

Re: Processing 'X' buttons message

Don Box3-Jul-06 3:33

Don Box

3-Jul-06 3:33

Handle WM_CLOSE Message.

Jubin Chawda
braindrain1@rediffmail.com
-----------------------------
Come online at:-
fitiyal@yahoo.com

Re: Processing 'X' buttons message

Tara143-Jul-06 3:35

Tara14

3-Jul-06 3:35

Yes, of course!! Silly of me. I did not see properly.

Thank you.

Fortitudine Vincimus!

Re: Processing 'X' buttons message

Hamid_RT3-Jul-06 3:39

Hamid_RT

3-Jul-06 3:39

yes you can useWM_CLOSE if this is your question or you want to write your button instead Close button

whitesky

Re: Processing 'X' buttons message

Tara143-Jul-06 3:43

Tara14

3-Jul-06 3:43

I want a message box to appear asking the user if he wants to save his work when he closes the dialog box.

Fortitudine Vincimus!

Re: Processing 'X' buttons message

Hamid_RT3-Jul-06 3:53

Hamid_RT

3-Jul-06 3:53

int int nIndex=MessageBox("Are your sure to exit,"Question",MB_YESNO); and check return value

whitesky

Re: Processing 'X' buttons message

Tara143-Jul-06 5:01

Tara14

3-Jul-06 5:01

Yes. Thank you.

Fortitudine Vincimus!

Problem with CreateProcess

rajeevktripathi3-Jul-06 2:13

rajeevktripathi

3-Jul-06 2:13

Hi All
I am having a problem in my application, what I am doing is:
Calling a function SaveKeys(TCHAR *) within a loop and this function save the specified registry key to a .reg file,
for this using CreateProcess( ) for calling regedit.exe from command line and WaitForSingleObject( ) function.
code looks like this

<br />
for (int i = 0; i < 10; i++)<br />
{<br />
    // some code here<br />
   SaveKeys(cRegistryKey );  // for specified Registry Key<br />
}<br />
<br />
void MyClass::SaveKeys(TCHAR *cRegistryKey)<br />
{<br />
        STARTUPINFO			StartupInfo;<br />
	PROCESS_INFORMATION ProcessInformation;<br />
  <br />
        CreateProcess(NULL, cCommand,NULL,NULL,FALSE,CREATE_DEFAULT_ERROR_MODE|CREATE_SUSPENDED,NULL, NULL, &StartupInfo, &ProcessInformation);<br />
WaitForSingleObject( ProcessInformation.hProcess, INFINITE );<br />
<br />
}<br />
//e.g. Here cCommand  = regedit /e C:\File.reg HKEY_CURRENT_USER\MyKey<br />

Now what is my problem is that here WaitForSingleObject( ) function is not working. and only a single reg file is created.
and when use Sleep(1000) then all the 10 reg file are created.

So please tell me that how should I overcome this problem.

Please reply
Thanks

Re: Problem with CreateProcess

Garth J Lancaster3-Jul-06 2:23

Garth J Lancaster

3-Jul-06 2:23

why bother shelling an external process when you can use something like

http://www.codeproject.com/system/NtRegistry.asp[^]

to do it directly from your program - if you look under http://www.codeproject.com/system[^] you'll find lots more goodies to help you

'g'

Re: Problem with CreateProcess

Viorel.3-Jul-06 2:30

Viorel.

3-Jul-06 2:30

Uninitialized STARTUPINFO structure is one of the problems of your code. It can be fixed like this:

STARTUPINFO StartupInfo = { sizeof(STARTUPINFO) };

Re: Problem with CreateProcess

Viorel.3-Jul-06 2:47

Viorel.

3-Jul-06 2:47

In addition, it seems that the invoked regedit tools cannot work in multi-instance mode. For example, I cannot start more then one regedit application from Windows menu or command line. That's why only some of your calls work.

This probably means that you cannot do multi-threaded export using regedit tool.

Re: Problem with CreateProcess

valikac3-Jul-06 6:44

valikac

3-Jul-06 6:44

CREATE_SUSPENDED

ResumeThread()

Kuphryn

about timer

happy_ram3-Jul-06 1:53

happy_ram

3-Jul-06 1:53

iam calling the function from another class.in that function i have SetTimer(0,1000,NULL).
but it will no work.
ONTimer is not calling.
ram.

Re: about timer

Maximilien3-Jul-06 1:57

Maximilien

3-Jul-06 1:57

do you have an HANDLER ( ON_WM_TIMER ) for the timer ?

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: about timer

happy_ram3-Jul-06 2:00

happy_ram

3-Jul-06 2:00

yah

void CMPEGPlayerDlg::OnPlay() 
{

	// TODO: Add your control notification handler code here


     
	 Onstop();
	
	  int k = m_list7.GetCurSel();
	
	  	 m_list7.GetText(k,m_SongName);
		if(!m_SongName.IsEmpty()) 
	 {
			  OpenNew(m_SongName);
			 MessageBox(m_SongName);
	 }
	 if(m_Player.PlayerMode() == pmReady) 
	 {
	  MessageBox("bye");
		 m_Player.Play();
	 }
			SetTimer(0, 1000, NULL);
}

here it is working because it is in the same class
where as

void CMPEGPlayerDlg::OnPlay(CString string)
{
Onstop();
	
	/*  int k = m_list7.GetCurSel();
	  CString str;
	  str.Format("%d",k);
	  MessageBox(str);
	  	 m_list7.GetText(k,m_SongName);*/
	 m_SongName=string;
		if(!m_SongName.IsEmpty()) 
	 {
			  OpenNew(m_SongName);
			  MessageBox(m_SongName);
	 }
	 if(m_Player.PlayerMode() == pmReady) 
	 {
	  MessageBox("hi");
		 m_Player.Play();
	 }	
SetTimer(ID_TIMER, 1000,NULL);
	
}

herer not working because this fuction is calling from different class.
ram

Re: about timer

see me3-Jul-06 2:02

see me

3-Jul-06 2:02

How did you call settimer???

Smile | :)

"Dream bigger...Do bigger...Expect smaller"
aji

Re: about timer

happy_ram3-Jul-06 2:18

happy_ram

3-Jul-06 2:18

thank u for ur reply,
what i cann't get u,
ram.

Re: about timer

Viorel.3-Jul-06 2:03

Viorel.

3-Jul-06 2:03

Perhaps it does not work because of first parameter, which is zero. According to documentation, it must be a non-zero identifier.

Try something like this:

SetTimer(1, 1000, NULL);

I hope it works.

Re: about timer

happy_ram3-Jul-06 2:17

happy_ram

3-Jul-06 2:17

not working.

Re: about timer

Hamid_RT3-Jul-06 3:14

Hamid_RT

3-Jul-06 3:14

How to declare WM_TIMER? and How to use settimer in another class

whitesky

how can i debug my project !

jalsa G3-Jul-06 1:52

jalsa G

3-Jul-06 1:52

i completed my project in release mode. But when i compiled it in debug i am unable to run because of assertion failures,and mfc errors etc.,

please tell me the solution

Regards
Venu g

venu

Re: how can i debug my project !

Maximilien3-Jul-06 1:55

Maximilien

3-Jul-06 1:55

well, when you see an ASSERT, just press the "Break" button, and check the line where the ASSERT happens, and fix the errors that provoked the ASSERT.

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: how can i debug my project !

jalsa G3-Jul-06 2:07

jalsa G

3-Jul-06 2:07

thans for your suggestion Maximilien,

but at the same time i am getting mfc send report error when i press that complete application is closing

thanks
venu

venu

Re: how can i debug my project !

jalsa G3-Jul-06 2:21

jalsa G

3-Jul-06 2:21

i am getting following error !

hPrevInstance unused and expression can't be evaluated

plz help me
venu

venu

Picture & Bitmap

Diglu3-Jul-06 1:34

Diglu

3-Jul-06 1:34

Hi all,
What is the difference between Picture and Bitmap?
Thanks to all.

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