C / C++ / MFC

Re: Window Message Problem

15-Sep-08 2:25

Did you check WM_KEYDOWN/UP?

Dhiraj kumar Saini15-Sep-08 3:01

Dhiraj kumar Saini

15-Sep-08 3:01

No but the control for which i want the window message is CListCtrl. So i think it should be something with LVS or LVN.

Re: Window Message Problem

Hamid_RT15-Sep-08 3:16

Re: WaitForMultipleObjects

15-Sep-08 3:16

Like LVN_KEYDOWN?

WaitForMultipleObjects

_AnsHUMAN_ 15-Sep-08 1:44

_AnsHUMAN_

15-Sep-08 1:44

Greetings all,
While coding for a certain logic, I encountered an error (application crash-not often reproducible) which arose due to the fact that an object of a class was still being accessed by one or more threads. Now the proposed solution is to signal the thread and wait for its completion. What I have is only the thread id.
Is it possible to get the handle to the thread using it's id(I can't do this at the time of thread creation as it is already implemented and I can't change the way it is done) so that I can use WaitForMultipleObjects and wait for the threads to finish their processing before objects of the class are destroyed?
Any help / pointers : appreciated.

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

CPallini15-Sep-08 1:52

CPallini

15-Sep-08 1:52

Do you intend this [^]?
Smile | :)

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set / call two different timmer/ handlers respectively

ptr_Electron15-Sep-08 1:40

ptr_Electron

15-Sep-08 1:40

How can I set two different timmers and , I want to call two different timmer handlers respectively

Re: set / call two different timmer/ handlers respectively

C^hris L^osinger15-Sep-08 1:45

C^hris L^osinger

15-Sep-08 1:45

the first parameter of SetTimer is an ID, which you define. so, you just give each of your timers a different ID:

SetTimer(1, 200);
SetTimer(2, 2000);

...

and then you check the timer ID in OnTimer, to see which timer has fired.

void CMyWnd::OnTimer(UINT nEventID)
{
  switch (nEventID)
  {
     case 1: .... break;
     case 2: .... break;
  }
}

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Re: set / call two different timmer/ handlers respectively

CPallini15-Sep-08 1:48

CPallini

15-Sep-08 1:48

If I got you:

ptr_Electron wrote:
How can I set two different timmers

Call two times the SetTimer function.

ptr_Electron wrote:
I want to call two different timmer handlers respectively

provide two different callbacks as arguments of the above SetTimer calls.

For instance:

UINT_PTR iTimer1 =  SetTimer( hMyWnd, nIDEvent1, uElapse1, lpCallback1);
UINT_PTR iTimer2 =  SetTimer( hMyWnd, nIDEvent2, uElapse2, lpCallback2);
);

Re: set / call two different timmer/ handlers respectively

Hamid_RT15-Sep-08 2:03

Little Splitter problem !

15-Sep-08 2:03

Its simple you can calll two different SetTimer. Smile | :)

CrocodileBuck15-Sep-08 1:03

CrocodileBuck

15-Sep-08 1:03

Hi,

i coded a sdi project with 3 horizonta splitters, no problem.
But now i want a vertical Splitter in the first pane,

********************
*------*-----------*
*------*-----------*
********************
*------------------*
*------------------*
*------------------*
********************
*------------------*
*------------------*
*------------------*
********************

but this doesn't wotk D'Oh! | :doh:

I don't get an error, but the chilsSplitter isn't shown !

Here is my code:

BOOL CMainFrame::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext) 
{
	CRect cr; 
	GetClientRect(&cr);
	
	m_Splitter_Main.CreateStatic(this, 3, 1);
	m_Splitter_Main.CreateView(0, 0, RUNTIME_CLASS(CTest_01View), CSize(cr.Width(), cr.Height()/3), pContext); 
	m_Splitter_Main.CreateView(1, 0, RUNTIME_CLASS(CTest_01View), CSize(cr.Width(), cr.Height()/3), pContext);  
	m_Splitter_Main.CreateView(2, 0, RUNTIME_CLASS(CTest_01View), CSize(cr.Width(), cr.Height()/3), pContext);
	
	m_Splitter_Child_1.CreateStatic(&m_Splitter_Main, 1, 2, WS_CHILD | WS_VISIBLE, m_Splitter_Main.IdFromRowCol(0, 0));
	m_Splitter_Child_1.CreateView(0, 0, RUNTIME_CLASS(CTest_01View), CSize(100, 0), pContext);
 	m_Splitter_Child_1.CreateView(0, 1, RUNTIME_CLASS(CTest_01View), CSize(0, 0), pContext);
	
	return TRUE;	
}

Many, many thanx for your help !
Best regards
Croc

Re: Little Splitter problem !

David Crow15-Sep-08 5:01

David Crow

15-Sep-08 5:01

You might also need:

void CMainFrame::OnSize(UINT nType, int cx, int cy) 
{    
    if(::IsWindow(m_Splitter_Main.m_hWnd) && ::IsWindow(m_Splitter_Child_1.m_hWnd))
    {
        m_Splitter_Main.SetRowInfo(0, cy/3, 10);
        m_Splitter_Main.SetRowInfo(1, cy/3, 10);
        m_Splitter_Main.SetRowInfo(2, cy/3, 10);
 
        m_Splitter_Child_1.SetColumnInfo(0, cx/2, 10);
        m_Splitter_Child_1.SetColumnInfo(1, cx/2, 10);
 
        RecalcLayout();
    }
}

You could probably call SetRowInfo() and SetColumnInfo() at the end of OnCreateClient(), but I did not try.

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

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

Re: Little Splitter problem !

CrocodileBuck15-Sep-08 8:21

CrocodileBuck

15-Sep-08 8:21

Thx very much ! Big Grin | :-D

Now it works !

Best regards
Croc ! Big Grin | :-D

how to know that we have reached end of file?

kapardhi15-Sep-08 0:59

15-Sep-08 0:59

hai!

i am reading the contents of a text file
the text file contains
"
vicky
vizzy
madan

ganesh

jyothi
"
actually i am taking a loop of 100
i am reading each line at once?
what i need is i want to run loop exactly the no of lines within a file.
As i read the whole line as one string.
i tried this way i used to find the length of string currently read, add the length to the loop variable, but still it counts spaces, is there any concept of End of File or EOF.

thanks!

toxcct15-Sep-08 1:31

toxcct

15-Sep-08 1:31

kapardhi wrote:
i am reading the contents of a text file

how are you doing this ?

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

kapardhi15-Sep-08 1:43

15-Sep-08 1:43

CStdioFile cFileObj;
cFileObj.Open (mstrFilePath, CFile::modeRead))

int nFileLen = (int) cFileObj.GetLength ();
for(i = 0; i<nfilelen;i>{
cFileObj.ReadString (strCurrString); // reads whole line at once
i += strCurrString.GetLength();
}

David Crow15-Sep-08 5:08

David Crow

15-Sep-08 5:08

I'm curious how you knew that ReadString() existed yet did not know what it returned. Confused | :confused:

while (cFileObj.ReadString(strCurrString))
{
    // do something with strCurrString
}

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

"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch

toxcct15-Sep-08 5:42

toxcct

15-Sep-08 5:42

personnally, at that point, I gave up D'Oh! | :doh:

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

kapardhi15-Sep-08 19:03

15-Sep-08 19:03

Thanks!
i couldn't think this silly logic!
i was just wandering if any funtion exist to show end of file !
anyway thankyou!

Sarath C15-Sep-08 1:36

Sarath C

15-Sep-08 1:36

There are several methods to read a file. You can use C functions like fopen, fread, etc.. alternatively you can use file streams of C++ and also you can use Windows APIs

If you're using Windows APIs please check the following sample

ReadFile Sample[^]

-Sarath.
"Great hopes make everything great possible" - Benjamin Franklin

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_AnsHUMAN_ 15-Sep-08 1:54

_AnsHUMAN_

15-Sep-08 1:54

int _eof( 
   int fd 
);

_eof returns 1 if the current position is end of file, or 0 if it is not. A return value of –1 indicates an error;

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

kapardhi15-Sep-08 2:37

15-Sep-08 2:37

CStdioFile cFileObj;
CString strFilePath;
strFilePath = "C:\\Documents and Settings\\Desktop\\Test.txt";

// Open the selected file in Read mode
cFileObj.Open (mstrFilePath, CFile::modeRead))

now tell me how to use _eof

Hamid_RT15-Sep-08 2:41

15-Sep-08 2:41

Like MSDN:_eof[^]. Smile | :)