C / C++ / MFC

Christian Graus28-May-01 19:09

28-May-01 19:09

Actually lauren gave the same response I was going to. If a process is not responding to messages then it is by definition not responding. Windows would tell this by virtue of the fact that it tries to interact with each process, not because it calls on an API function to tell it what it already knows - that it is trying to interact with a child process and it is not replying. This can mean it is busy, or hung. So you need therefore to attempt to interact with the process in question and see if it replies. Is the process of your creation ? The easy way would then be with copydata.

Christian

#include "std_disclaimer.h"

People who love sausage and respect the law should never watch either one being made.

The things that come to those who wait are usually the things left by those who got there first.

Ravi Bhavnani28-May-01 20:12

Ravi Bhavnani

28-May-01 20:12

You could do a SendMessage (you'd need a window handle) in a separate thread, record the "ping" time, and have your checker app's main thread query the worker thread's ping time. If the time is undefined (eg: < 0) after a time "t", you could unsafely assume the target process is compute bound. I think Win9x/NT uses t == 20 seconds.

Hope this helps.

/ravi

"There is always one more bug..."
http://www.ravib.com
ravib@ravib.com

Ravi Bhavnani29-May-01 6:03

Ravi Bhavnani

29-May-01 6:03

Looks like Norm and Andrew have provided a couple of excellent solutions to your problem. Imho, SendMessageTimeout() appears to be the way to go - it's a supported API call that essentially does what I suggested in my hack.

/ravi

NormDroid28-May-01 21:29

NormDroid

28-May-01 21:29

Luaren
The official way according to Matt Pietrek is to get main window of handle of of the application concerned and then call:

where m_nTimeout is usally set around 5000ms

if (!SendMessageTimeout(hWnd,WM_NULL ,0,0,SMTO_ABORTIFHUNG ,m_nTimeout ,&dwResult ))
pTask->SetTaskStatus(TRUE);
else
pTask->SetTaskStatus(FALSE);

Regards
Norm

28-May-01 21:12

Look article http://www.codepile.com/tric2.shtml

PROCESS STATUS

28-May-01 1:52

I M TRYING TO FIND THE CURRENT STAUS OF ANY APPLICATION/PROCESS LIKE MENTIONED IN TASK MANAGER. Confused | :confused:

Re: PROCESS STATUS

Christian Graus28-May-01 2:00

28-May-01 2:00

NO NEED TO YELL ( or post twice ). I'm sorry, I don't know the answer, but I just had to say that. Do you want it for Win2K only ? I only ask because Win95/98 doesn't bring up a process list, I'm not sure if NT4 does ( I've not run it for years ).

Christian

#include "std_disclaimer.h"

People who love sausage and respect the law should never watch either one being made.

The things that come to those who wait are usually the things left by those who got there first.

Re: PROCESS STATUS

#realJSOP29-May-01 0:44

#realJSOP

29-May-01 0:44

Try this code. You must have the hwnd of the process you're checking. The easiest way to get that is to call CreateProcess to spawn the app.

BOOL AppIsFrozen(HWND hWnd)
{
	BOOL bFrozen = FALSE;

	DWORD dwResult;
	LRESULT nResult = ::SendMessageTimeout(hWnd, WM_NULL, 0, 0, 
	                                       SMTO_ABORTIFHUNG | SMTO_BLOCK, 
	                                       5000, 
	                                       &dwResult);
	if (nResult == 0)
	{
		if (dwResult == 0)
		{
			bFrozen = TRUE;
		}
	}
	return bFrozen;
}

PROCESS STATUS

28-May-01 1:52

I M TRYING TO FIND THE CURRENT STAUS OF ANY APPLICATION/PROCESS LIKE MENTIONED IN TASK MANAGER. Confused | :confused:

Re: PROCESS STATUS

Ghazi H. Wadi28-May-01 6:55

Ghazi H. Wadi

28-May-01 6:55

Use EnumProcess () or use ToolHelp 32 functions
for more information see article Q175030

Kindest regards
Alfadhly

<marquee>
It is Illogical to define an inventor by his invention

VB and C++

28-May-01 1:28

I searched the whole MSDN, but I did't find the solution.
I need C++ functions which do the same
as the VB functions:

Trim
RTrim
LTrim
Hex

thanks in advance

Re: VB and C++

Christian Graus28-May-01 1:51

std::cout redirect to socket

28-May-01 1:51

CString::TrimLeft, and CString::TrimRight.

If you're not using MFC, you can always walk through the array, then use strcpy to make a copy of the bit that does not have leading or trailing spaces.

Assuming Hex allows you to specify a number in hex, its 0x, as in 0xFF = 255.

Christian

#include "std_disclaimer.h"

People who love sausage and respect the law should never watch either one being made.

The things that come to those who wait are usually the things left by those who got there first.

ernst.maurer28-May-01 1:07

ernst.maurer

28-May-01 1:07

Hi
Can I use the SetStdHandle(...) function to redirect standard output stream (std::cout) to a windows socket opened by the function socket(...) ?

Thanx.
Ernst

ClistCtrl

28-May-01 1:07

Hello, i need somoene to help me. Confused | :confused:

I have created two dialog boxes, in the first one i have inserted a list ctrl in style report where i put some items with checkboxes associated. I want that when i click in an item that the item selected goes into the second dialog box with always a list ctrl.
i hope that i've explained clearly my problems, tks Confused | :confused:

Re: ClistCtrl

Christian Graus28-May-01 1:37

toolbar in dialog can't be set check state

28-May-01 1:37

Assuming one dialog is the parent of another, use GetParent() to get a pointer to it, and then put a function in the second dialog that inserts the item as you would like, and gets sent the string to insert.

Christian

#include "std_disclaimer.h"

People who love sausage and respect the law should never watch either one being made.

The things that come to those who wait are usually the things left by those who got there first.

Re: ClistCtrl

28-May-01 4:27

I'm sorry but i'm just a beginner and i don't understand everything.to get the pointer to the parent dialog must i do like that :
m_panier.GetParent();
But if it i did is right how can i now put a fonction in the second dialog that gets the item, and gets sent the string to insert

Here a piece of my code which allows to display the index item selected (in the first dialog) in another Edit box (in the second dialog)

void CDThin::OnItemchangedListthin(NMHDR* pNMHDR, LRESULT* pResult)
{
NM_LISTVIEW* pNMListView = (NM_LISTVIEW*)pNMHDR;
// TODO: Add your control notification handler code here
CString strText;
CListedeprixApp* h_myApp = (CListedeprixApp *)AfxGetApp();

strText.Format(TEXT("Item index: %d\r\n "), pNMListView->iItem);
UpdateData();
m_Log3+=strText;
h_myApp->ListeDePrix() += strText;

UpdateData(FALSE);
*pResult = 0;
}

BOOL CDPanier::OnInitDialog()
{
CDialog::OnInitDialog();

// TODO: Add extra initialization here
CListedeprixApp* h_myApp = (CListedeprixApp *)AfxGetApp();
m_panier = h_myApp->ListeDePrix();
}

Confused | :confused:

julia28-May-01 0:58

julia

28-May-01 0:58

in my dialog,i added a toolbar on it,and one button(ID_MYBUTTON) with code:
CMyDilog::OnMyButton()
{
m_bFlag=!m_bFlag;
}
CMyDialog::OnUpdateMyButton(CCmdUI *pCmdUI)
{
pCmdUI->SetCheck(m_bFlag);
}

but why can't the button's state be changed between pressed_state and unpressed_state?
Thanks in advance. Confused | :confused:

Re: toolbar in dialog can't be set check state

Christian Graus28-May-01 1:57

28-May-01 1:57

I don't recall how this works, but it's in PRetranslateMEssage. If you download my article "GDI+ Brushes and Matricies", I know for sure I had to impliment the fix you want there. The problem is that your OnUpdate function is not actually called.

I've just checked the code, and I put this in pretranslatemessage, before the call to PTM:

UpdateDialogControls( this, TRUE );

and this function as well:

LRESULT CGDIPlusBrushesDlg::OnKickIdle(WPARAM, LPARAM)
{
CMenu* pMainMenu = GetMenu();
CCmdUI cmdUI;
for (UINT n = 0; n < pMainMenu->GetMenuItemCount(); ++n)
{
CMenu* pSubMenu = pMainMenu->GetSubMenu(n);
cmdUI.m_nIndexMax = pSubMenu->GetMenuItemCount();
for (UINT i = 0; i < cmdUI.m_nIndexMax;++i)
{
cmdUI.m_nIndex = i;
cmdUI.m_nID = pSubMenu->GetMenuItemID(i);
cmdUI.m_pMenu = pSubMenu;
cmdUI.DoUpdate(this, FALSE);
}
}
return TRUE;
}

This means you need to put

ON_MESSAGE(WM_KICKIDLE, OnKickIdle)

in the messagemap of your CPP file ( it's near the top ), and

afx_msg LRESULT OnKickIdle(WPARAM, LPARAM);

with the rest of the generated message map funtions in the header file. I think that's all, if not, I'll have another look. So you don't need to download my article after all. Don't feel that not downloading it means you can't give me a five when voting starts for the .Net competition though Smile | :)

Christian

#include "std_disclaimer.h"

People who love sausage and respect the law should never watch either one being made.

The things that come to those who wait are usually the things left by those who got there first.

Time display II

27-May-01 21:47

thank you for the people who replied to my question but i will state again my problem together with my code

"I have this Date and Time display in my window. Im using the Ontimer() / SetTimer() routine to update it...
but the problem is the "second" display's interval is not consistent.
It is not actually noticeable but when you compare it with the computers clock you can see it
ticking ahead sometimes. what can i do to solve this? "

here is how my program looks like

LONG xxxxxx::OnPageChange(UINT lPageNo, LONG lValue)
{
.
.
//Timer
SetTimer(1, 400, NULL);
.
.
}

void xxxxxx::OnTimer(UINT nIDEvent)
{
TimeDisplay();
CWnd::OnTimer(nIDEvent);
}

void xxxxxx::TimeDisplay()
{
SYSTEMTIME osTime;
GetLocalTime(&osTime);

//YEAR
.
.
//MONTH
.
.
//DAY
//HOUR
//MINUTE

//SECOND
if(oldtime[5] != osTime.wSecond){
oldtime[5] = osTime.wSecond;
//Display second here//
}
}

i tried making a new thread and call TimeDisplay().I created a while loop inside the TimeDisplay to repeat the process of displaying the clock until the thread ends. Thats the only i know to update the clock(since i cant use the WM_TIMER here or i can?) i just dont know how. The bad thing is that the CPU resources being used reached 100%.

whats the problem with my program? or what can be done to fix this? thanks to everyone who replied and will reply to this question. sorry for taking your time... i really appreciate your help....

Rachel

Tomasz Sowinski28-May-01 1:11

Tomasz Sowinski

28-May-01 1:11

You don't need to create any threads just for displaying time. Just handle WM_TIMER message, read system time and display it as string.

Tomasz Sowinski -- http://www.shooltz.com.pl

28-May-01 13:56

thats basically what im doing but my time display is sometimes not synchronous with the clock display of the computer.

Tomasz Sowinski29-May-01 0:45

Tomasz Sowinski

29-May-01 0:45

What's the difference (in seconds) between the time you're displaying and clock and the one displayed in the system tray?

Tomasz Sowinski -- http://www.shooltz.com.pl