C / C++ / MFC

Re: SHChangeNotifyRegister notification

2-Sep-05 8:49

For performance reasons, multiple notifications may be combined into a single notification.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

ragavan2-Sep-05 18:39

ragavan

2-Sep-05 18:39

thanks . You mean to say for performance reason Windows OS itself is giving only few notifications ? . Is there anyway to overcome this problem .

Re: SHChangeNotifyRegister notification

David Crow6-Sep-05 2:52

6-Sep-05 2:52

ragavan wrote:
You mean to say for performance reason Windows OS itself is giving only few notifications ?

That's exactly what I'm saying.

ragavan wrote:
Is there anyway to overcome this problem .

What problem?

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

File Search

bugDanny2-Sep-05 4:14

bugDanny

2-Sep-05 4:14

I had asked yesterday if there was a way to look at all the files in a directory and I was directed to CFileFind, but for some reason, as I use .FindNextFile() and .GetFileName(), it's skipping like 4 files every time! Any help?

Danny

Cedric Moonen2-Sep-05 4:24

Cedric Moonen

2-Sep-05 4:24

Post the code

bugDanny2-Sep-05 5:06

bugDanny

2-Sep-05 5:06

Actually, I have to retract that question. It does seem to search all the files, just in a different order than I would have expected. It does seem, though, that when I try to open the file just after I found it that the file doesn't open.

Here's the code I'm working with...

CFileFind finder;
BOOL bWorking = finder.FindFile(searchPath);

while (bWorking)
{
bWorking = finder.FindNextFile();

fileList[counter] = (LPCTSTR) finder.GetFileName();
path = (LPCTSTR) finder.GetFilePath();

examine.open(path, ios::in | ios::nocreate | ios::noreplace);

.
.
.
}

(fileList is an array of CStrings, path is a CString, and examine is an fstream.)

Is the finder possibly interfering with opening the file?

Danny

David Crow2-Sep-05 8:54

2-Sep-05 8:54

bugDanny wrote:
fileList[counter] = (LPCTSTR) finder.GetFileName();
path = (LPCTSTR) finder.GetFilePath();

While not related to the actual problem, the two casts are unnecessary.

"One must learn from the bite of the fire to leave it alone." - Native American Proverb

Context Help whit several tabs fails

Gary R. Wheeler3-Sep-05 2:54

Gary R. Wheeler

3-Sep-05 2:54

The order you see is dependant upon the underlying file system. For NTFS, you will generally see the files in alphabetical order by name. For FAT32, it's in 'directory' order, which is generally the order in which the files were added to the directory.

bugDanny wrote:
Is the finder possibly interfering with opening the file?

Doubtful. Try debugging your examine.open function with a hand-entered, known good file path.

Software Zen: delete this;

Heyerdahl2-Sep-05 4:01

Heyerdahl

2-Sep-05 4:01

Dear Community,

I have a question about integration of context sensitiv help for dialogs in a vc++ developed application. I use a window with several tabs and like to provide help for the tabdialogs. Every tab obtained a contextid and the contextid is compiled into the chm-helpfile. I display the contextid of the called tabdialog after pressing F1 in a message window.
Only the first tab starts the help and displayes the context id, when I hit F1 oder use the "What is" function. The helpfilecall of all other tabs, if they are active, dos not work and no contextid is displayed. Can anyone tell me what's the reason for?
Thanks in advance for help.

Heyerdahl

safearray access violation VBA to C++

Rimcon2-Sep-05 3:59

Rimcon

2-Sep-05 3:59

I'm writing a C++ DLL to speed up (run time over 1 hour) an excel macro. I read arrays in the macro, pass them to the DLL as SAFEARRAYs, identify the memory location, assign it to a new C++ array. I read some of the arrays and write to others. Then the excel macro reads the arrays and writes the results to a spreadsheet.

An early version of the program ran OK (50,000 loops through the arrays) -- after some early problems -- and the results were correct (I verified them manually in excel). The run time was reduced by a factor of over 10 !!!.

Then I expanded the program and now it freezes up -- never at the same place but always on the same type of command and always a memory access violation, either assigning the pointer to the C++ array or reading from/writing to the array.

The code looks like this:
In excel macro:

Code:
Option Explicit
Option Base 0

Public CF() As Double, IssuerCorrel() As Double, CRN() As Double, TransitionIndex() As Integer, TransCutoff(0 To 6, 0 To 7) As Double, IssuerEndRatingCode() As Integer

Declare Sub Cholesky Lib “C:\CreditRisk\CreditSim.dll” (IssuerCorrel() As Double, CF() As Double, ByVal IssuerCount As Integer)

Sub ScenarioGenerator()

Application.Calculation = xlCalculationManual: Application.ScreenUpdating = False: Application.EnableEvents = False

Dim IssuerCount As Integer,

Read in some data from spreadsheets

Dim IssuerCorrel(IssuerCount, IssuerCount) as Single; CF(IssuerCount, IssuerCount) as Single

Read more data from spreadsheets

Call Cholesky(IssuerCorrel(), CF(), ByVal IssuerCount)

Write some output data to spreadsheets

End Sub

In C++:

Code:
#include "stdafx.h"
#include <windows.h>
#include <oleauto.h>
#include "CreditSim.h"
#include "Oaidl.h"
#include <stdlib.h>
#include <math.h>
#include <time.h>

BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
return TRUE;
}

void __declspec (dllexport) __stdcall Cholesky(
SAFEARRAY **IssuerCorrel, SAFEARRAY **CF, short IssuerCount)
{
double L = 0.999999;
short n = IssuerCount;
long i = 0;long j = 0; long k = 0;

srand( (unsigned) time( NULL ) );

HRESULT SafeArrayLock( SAFEARRAY **IssuerCorrel );
HRESULT SafeArrayLock( SAFEARRAY **CF );

// Create new arrays that point to the Safearray data locations
double* CFc;
CFc = (double*)(*CF)->pvData;
CFc[0]= *CFc; Program fails here.

double* IssuerCorrelc;
IssuerCorrelc = (double*)(*IssuerCorrel)->pvData;
IssuerCorrelc [0] =*IssuerCorrelc; Program fails here.

CFc[n*(n-1)+n-1] = IssuerCorrelc[n*(n-1)+n-1];
for (j = n-2; j>=0; j--)
{
CFc[n*j + j] = IssuerCorrelc[n*j + j];
for (k = n-1; k>j; k--)
{
CFc[n*j + k] = IssuerCorrelc[n*j + k] * L;
for (i = k + 1; i

Re: safearray access violation VBA to C++

Branislav3-Sep-05 21:19

Branislav

3-Sep-05 21:19

When you call function Cholesky you should have at more than zero element in the array IssuerCorrel and CF. Try to check that before calling because when array is 0 you have failure.

Edit Box Style For 3D Look

IndianOcean2-Sep-05 3:59

IndianOcean

2-Sep-05 3:59

Hi there,
I am creating Edit Box at runtime with CEdit class
and I have to pass there Edit Box Styles
but it is displying the Edit Box with flat property
can anybody tell me how we can creat 3D look like Edit Box

Bye

Regards
IndianOcean

PJ Arends2-Sep-05 8:42

PJ Arends

2-Sep-05 8:42

WS_EX_CLIENTEDGE

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" - mYkel - 21 Jun '04

"There's not enough blatant self-congratulatory backslapping in the world today..." - HumblePie - 21 Jun '05

Within you lies the power for good - Use it!

IndianOcean4-Sep-05 21:45

IndianOcean

4-Sep-05 21:45

I have already used this property but
it did not come in to required look.

do u have any other preoperty for 3D look?

Thanks & Regards
Indian Ocean

PJ Arends4-Sep-05 22:00

PJ Arends

4-Sep-05 22:00

WS_EX_CLIENTEDGE is the one for 3D look. Are you sure that it is not being removed somehow?

Run Spy++ and use the window finder to select the control, then look under the Styles tab - extended styles list to see if WS_EX_CLIENTEDGE is listed.

IndianOcean4-Sep-05 22:15

IndianOcean

4-Sep-05 22:15

I have checked the styles
From Spy and u are right it is not listed in the styles..
Some how it is being removed or like that

i m using these properties
WS_CHILD | WS_BORDER | WS_VISIBLE | ES_LEFT |WS_EX_CLIENTEDGE ,

if can tell me something.........

thanks & regards
Indian Ocean

PJ Arends4-Sep-05 22:25

PJ Arends

4-Sep-05 22:25

WS_EX_CLIENTEDGE is an extended style, not a regular style, so it can not be used with the other styles you listed.

Use the CreateEx function to create your edit control

MyEdit.CreateEx(WS_EX_CLIENTEDGE,
                _T("EDIT"),
                NULL,
                WS_CHILD | WS_BORDER | WS_VISIBLE | ES_LEFT,
                &Rect,
                pParentWnd,
                nID,
                NULL);

See CWnd::CreateEx in MSDN for more info.

vc++

amitesh29112-Sep-05 3:59

amitesh2911

2-Sep-05 3:59

hello friends i need to develop a vc++ program which can add new item in menu of excel and can open a form to insert text in selected cells

Re: vc++

David Crow2-Sep-05 8:55