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Hi All,
I am facing problem of handle leak in my Application.
While using AfxBegin thread creating a worker thread in suspended mode and then resuming the thread using resumethread.
During above process 7 Handles are getting created but when I am exactly closing the thread using PostThreadMessage(WM_QUIT, NULL, NULL) only 5 handles are getting closed. Two handles are not being closed.
The details is like This:
m_pControlThread = AfxBeginThread (
ControlThreadLoop,
( LPVOID )this, THREAD_PRIORITY_NORMAL,
0, CREATE_SUSPENDED
);
m_pControlThread->ResumeThread();
from above 7 handles are getting opened.
In Destructor Closing like this:
if (m_pControlThread)
{
m_pControlThread->PostThreadMessage(WM_QUIT, NULL, NULL);
WaitForSingleObject( m_pControlThread->m_hThread,
_MESSAGE_TIMEOUT );
delete m_pControlThread;
}
Here only 5 Handles are getting closed...
Where remaining 2 handles are missing .... I am not getting any Idea..
Please suggest..
Thanks,
Jokhan
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That could be normal behaviour. Windows likes to keep some handles around to be reused later. The way to check if this is the case is to run and stop your thread multiple times. If the total handle count does not keep climbing you are ok, if it does climb you have a problem.
ie: handle count is 0...7...2...7...2...7...2...7... etc OK
" " " 0...7...2...9...4...11...6...etc Error
"You're obviously a superstar." - Christian Graus about me - 12 Feb '03
"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04
Within you lies the power for good - Use it!
Honoured as one of The Most Helpful Members of 2004
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Hello Arends,
Thanks for your suggestion.
You are right but In my case the total ( after few iteration of start and stop) number of handles are increasing. And it is 2 handles per iteration.
And As I have written in posting: while quiting the thread only 5 handles are getting closed though each time 7 handles are getting opened.
Please suggest!!
Thanks,
Jokhan
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i trying to disable mouse wheel in comboBox , i try to find this option in propertise but i dont find this option .
In comboBOx control i also can`t find this option.
Someone can Help me ??
How can i do it ??
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A very nasty trick  would be to derive a class from the combobox control, use it in place of your combobox control, capture the mousewheel messages WM_MOUSEWHEEL and then don't forward them to the base class...
~RaGE();
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I can't figure out why the arrays dip_array,azim_array aren't yielding the proper values:
<br />
<br />
#include <math><br />
#include "stdafx.h"<br />
#include <iostream><br />
using namespace std;<br />
<br />
double theta, phi, t, p;
double lambda1 = 0.5;<br />
double lambda2 = 2;<br />
double a11,a12,a21,a22,d11,d13,d31,d33;<br />
const double pi = 3.142857;<br />
const int rows = 3;<br />
const int cols = 3;<br />
<br />
double a(double p)<br />
{<br />
d11 = cos((p*pi)/180);<br />
return d11;<br />
}<br />
<br />
double b(double p)<br />
{<br />
d13 = -1*sin((p*pi)/180);<br />
return d13;<br />
}<br />
<br />
double c(double p)<br />
{<br />
d31 = sin((p*pi)/180);<br />
return d31;<br />
}<br />
<br />
double d(double p)<br />
{<br />
d33 = cos((p*pi)/180);<br />
return d33;<br />
}<br />
<br />
<br />
double e(double t)<br />
{<br />
a11 = sin((t*pi)/180);<br />
return a11;<br />
}<br />
<br />
double f(double t)<br />
{<br />
a12 = cos((t*pi)/180);<br />
return a12;<br />
}<br />
<br />
double g(double t)<br />
{<br />
a21 = -1*cos((t*pi)/180);<br />
return a21;<br />
}<br />
<br />
double h(double t)<br />
{<br />
a22 = sin((t*pi)/180);<br />
return a22;<br />
}<br />
<br />
double dip_array [3][3] = {{a(p),0,d13},{0,1,0},{d31,0,d33}}; <br />
<br />
double azim_array [3][3] = {{a11,a12,0},{a21,a22,0},{0,0,1}}; <br />
<br />
double lambda_array [3][3] = {{lambda1,0,0},{0,1,0},{0,0,lambda2}}; <br />
<br />
double r_array [3][1] = {4,8,3.94};<br />
<br />
<br />
void printarray (double arg[][3]) <br />
{<br />
for (int i=0; i<3; i++)
{<br />
for (int j=0; j<3; j++)
cout << arg[i][j] << " ";<br />
cout << "\n";<br />
}<br />
}<br />
<br />
<br />
int main(int argc, char* argv[])<br />
{<br />
<br />
cout<<"ANISOTROPY MODELLING.\n";<br />
cout<<"Please enter a real number between 0 and 360 for the azimuth angle, theta, then press the 'Enter' key.\n\n";<br />
cin>>t;<br />
<br />
cout<<"Please enter a real number between 0 and 360 for the dip angle, phi, then press the 'Enter' key.\n\n";<br />
cin>>p;<br />
<br />
a(p);<br />
b(p);<br />
c(p);<br />
d(p);<br />
e(t);<br />
f(t);<br />
g(t);<br />
h(t);<br />
<br />
printarray(dip_array);"\n.";<br />
printarray(azim_array);<br />
printarray(lambda_array);<br />
<br />
return 0;<br />
}<br />
<br /> Please help
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your global variables are not initialized when you initialize your arrays. Then your arrays are initialized on the stack before your main function is called. Inside of your code, you never assign any values to the arrays afterwards.
What you should do, is simply move your array initialization after you call all of your functions a-h, then values will be assigned into your arrays.
Good luck
Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!
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Thank you, Paul. This worked perfectly.
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New Problem: Now I'm doing the multiplication, where I'm trying to multiply the arrays in this order:
<br />
lambda_array*dip_array*azim_array*r_array<br />
what am i doing wrong? all my values in the final range array, fr_array are all zero, which shouldn't be the case...
Here's the code.
<br />
<br />
#include <math><br />
#include "stdafx.h"<br />
#include <iostream><br />
using namespace std;<br />
<br />
double theta, phi, t, p;
double lambda1 = 0.5;<br />
double lambda2 = 2;<br />
double a11,a12,a21,a22,d11,d13,d31,d33;<br />
const double pi = 3.142857;<br />
const int rows = 3;<br />
const int cols = 3;<br />
<br />
double dip_array [3][3] = {0}; <br />
<br />
double azim_array [3][3] = {0}; <br />
<br />
double lambda_array [3][3] = {0}; <br />
<br />
double r_array [3] = {0};<br />
<br />
double fr_array [3][3] = {0}; <br />
<br />
<br />
double a(double p)<br />
{<br />
d11 = cos((p*pi)/180);<br />
return d11;<br />
}<br />
<br />
double b(double p)<br />
{<br />
d13 = -1*sin((p*pi)/180);<br />
return d13;<br />
}<br />
<br />
double c(double p)<br />
{<br />
d31 = sin((p*pi)/180);<br />
return d31;<br />
}<br />
<br />
double d(double p)<br />
{<br />
d33 = cos((p*pi)/180);<br />
return d33;<br />
}<br />
<br />
<br />
double e(double t)<br />
{<br />
a11 = sin((t*pi)/180);<br />
return a11;<br />
}<br />
<br />
double f(double t)<br />
{<br />
a12 = cos((t*pi)/180);<br />
return a12;<br />
}<br />
<br />
double g(double t)<br />
{<br />
a21 = -1*cos((t*pi)/180);<br />
return a21;<br />
}<br />
<br />
double h(double t)<br />
{<br />
a22 = sin((t*pi)/180);<br />
return a22;<br />
}<br />
<br />
<br />
void printarray (double arg[][3]) <br />
{<br />
for (int i=0; i<rows; i++)
{<br />
for (int j=0; j<cols; j++)
cout << arg[i][j] << " ";<br />
cout << "\n";<br />
}<br />
}<br />
<br />
void printarray2(double arg[]) <br />
{<br />
for (int i=0; i<rows; i++)
{<br />
cout << arg[i] << " ";<br />
cout << "\n";<br />
}<br />
}<br />
<br />
void mult(double fr_array[3][3])<br />
{<br />
for(int i=0;i<rows;i++)
{<br />
for(int j=0;j<cols;j++)
{<br />
for(int k=0;k<cols;k++)
{<br />
for(int l=0;l<cols;l++)
{<br />
fr_array [i][j] += lambda_array [i][l]*dip_array [l][k]*azim_array[k][j];<br />
fr_array [i][j] += fr_array[i][j]*r_array[i];<br />
}<br />
}<br />
}<br />
}<br />
}<br />
<br />
<br />
<br />
<br />
int main(int argc, char* argv[])<br />
{<br />
<br />
cout<<"ANISOTROPY MODELLING.\n";<br />
cout<<"\nPlease enter a real number between 0 and 360 for the azimuth angle, theta, then press the 'Enter' key.\n\n";<br />
cin>>t;<br />
<br />
cout<<"\nPlease enter a real number between 0 and 360 for the dip angle, phi, then press the 'Enter' key.\n\n";<br />
cin>>p;<br />
<br />
a(p);<br />
b(p);<br />
c(p);<br />
d(p);<br />
e(t);<br />
f(t);<br />
g(t);<br />
h(t);<br />
<br />
double dip_array [3][3] = {{d11,0,d13},{0,1,0},{d31,0,d33}}; <br />
<br />
double azim_array [3][3] = {{a11,a12,0},{a21,a22,0},{0,0,1}}; <br />
<br />
double lambda_array [3][3] = {{lambda1,0,0},{0,1,0},{0,0,lambda2}}; <br />
<br />
double r_array [3] = {4,8,3.94};<br />
<br />
<br />
<br />
cout<<"\nThe dip array is:\n";<br />
printarray(dip_array);<br />
<br />
cout<<"\nThe azimuth array is:\n";<br />
printarray(azim_array);<br />
<br />
cout<<"\nThe anisotropy array is:\n";<br />
printarray(lambda_array);<br />
<br />
cout<<"\nThe original range array is:\n";<br />
printarray2(r_array);<br />
<br />
<br />
mult(fr_array);<br />
cout<<"\nThe final range array is:\n";<br />
printarray(fr_array);<br />
<br />
<br />
<br />
return 0;<br />
}
You can use 60 degrees for theta and phi, for check, since cos(60) = 0.5, sin(60) = 0.866....
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I add a new Win32 Console Application project, how can include what
files to use MFC CString ?
Thanks in advance.
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when you are create new WIN32 Console Application project , on step 1 you can choose "An application suppurt MFC" from options.
But you can also include class <afx.h> that support CString.
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I add a new Win32 Application project, how can I use MFC in this project ? What files will I need to include ?
Thanks in advance.
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I did not choose this option, how can I use it in current project?
Thanks in advance.
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1.From Project|Setting Choose Option form MFC Dll!
2.include afxwin.h header file for your CString class.
3.call AfxWinInit(..) for intialization of MFC dll in your Application
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
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How can I tell when a window has refreshed its (for lack of a bettter term) window hooks? More specifically, how can I tell when a hook I have installed on a window has been flushed out?
Thanks
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Who can tell me how I can get the HWND of Edit Box in a window,if I have get the CWnd of the window.thank you very much!!!
Jack
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// Wnd is an instance of CWnd
HWND hwndEdit = ::GetDlgItem (Wnd.GetSafeHwnd(), ID_EDIT);
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Thank you~~But idon't know The ID_EDIT.Indeed I need a function that auto detect the current window which contain a text box,and then record the window title.
Jack
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If you have a CWnd from your edit box, let's name it MyWnd, then simply use
HWND MyHandle = MyWnd.m_hwnd.
CWnd::m_hWnd is public.
~RaGE();
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CWnd::GetSafeHwnd()
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
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Hi,
I am finding the TStringGrid component which I want to import to MFC application,
Anyone knows, please let me know !!!
Because in my MFC application I need to get data from the TStringGrid Control (this control from Another applicatin that was create by Delphi, it contains the TStringGrid control likes CListCtrl in MFC application)
Thanks
flowerdan
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MSDN says we can use VirtualAllocEx() to obtain memory from another process.
When I testify this, VirtualAllocEx(MEM_RESERVER|MEM_COMMIT) succeeded,
but when I tried to write to the buffer, most often it caused GPF!
Here is my sample codes:
// Create a child process and obtain its handle.
// Use the handle to allocate memory with VirtualAllocEx().
// Then use the return buffer to do data copying, etc...
-----------------------------------------------------------------
...
CreateProcess( OtherProcess, NULL,NULL, NULL, TRUE, CREATE_SUSPENDED , NULL, NULL, &si, &pi );
pBase = (char*) VirtualAllocEx ( pi.hProcess, NULL, iSize, MEM_RESERVE, PAGE_NOACCESS );
pBuffer = (char*) VirtualAllocEx ( pi.hProcess, pBase, iSize, MEM_COMMIT, PAGE_READWRITE);
ZeroMemory( temp, iSize); // *** Add this line causes GPF at the end of the program***
VirtualFreeEx( pi.hProcess, pBase, 0, MEM_DECOMMIT);
VirtualFreeEx( pi.hProcess, pBase, 0, MEM_RELEASE);
.....
ResumeThread( (HANDLE ) pi.hThread);
CloseHandle( pi.hProcess );
CloseHandle( pi.hThread );
...
-----------------------------------------------------------------
It seemed everything were OK as all the function calls all succeeded.
However, the program could encounter GPF upon end of main().
Obviously it was caused by the ZeroMemory() write action.
If no write action was performed, then no problem arised.
And if only wrote few hundread bytes to the return buffer, it could have no problem either.
I think I could have make some mistakes here but I still couldn't find out the reason after carefully examining all the possibilities.
Can somebody give me insight on this!
Other than FileMapping or WM_COPYDATA,
I really want to use another approach like VirtualAllocEx() to share data among different processes.
Thanks for help.
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macauit wrote:
ZeroMemory( temp, iSize);
What is "temp"? It's not defined anywhere in your code...
Ryan "Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"
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For performing some write operations in memory allocated by VirtualAllocEx() use WriteProcessMemory() function. Other functions often raise an exception when used to write in memory of another process.
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