C / C++ / MFC

Re: How to close the Opened process.

31-Oct-07 3:14

GauranG33 wrote:
TCHAR str[100] ={};
...
DWORD dError;.

These two statements are in error. That has no bearing on your problem, however, but it does make it somewhat difficult to debug something with syntax errors.

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

JudyL_MD31-Oct-07 3:52

JudyL_MD

31-Oct-07 3:52

Send the opened process a WM_CLOSE message. Just closing your handle to it does not close the process.

You've received some suggestions to use TerminateProcess - that is the last way you should try if you can't close a process nicely. Using TP can causes memory leaks and issues if the process is using any kind of inter-process communication. It is a function-of-last-resort.

Judy

Problem in CRecordSet

M_Menon30-Oct-07 21:08

30-Oct-07 21:08

Hi friends

I am really new with Visual C++. I am using MS Access for DB.
I am trying to take data from a table and pass it to my recordset rs.
I am trying to check if i have received any records for my statement.

my code is

rs is CRecordSet.

While(!rs.IsEof)
{}

Here even when my DB has returned no data it goes inside the While statement.
I believe this is the standard statement to check if you DB has returned zero rows or no data, or whatsoever.

But even when i get Data or i dont still it executes statements inside While.

Any help would be appreciated.

Thanks

Cheers

Menon

panthal30-Oct-07 21:30

panthal

30-Oct-07 21:30

use this code ,

while(!recset.IsEOF()) // Do until EOF
{
}

M_Menon30-Oct-07 22:57

30-Oct-07 22:57

hi there

I am using
while(rs.IsEOF())
{}

but still...it goes inside the while loop.
thanks

Cheers

Menon

David Crow31-Oct-07 3:40

31-Oct-07 3:40

mady1380 wrote:
while(rs.IsEOF())
{}

but still...it goes inside the while loop.

Because rs.IsEOF() is evaluating to true, thus the while loop is executing.

Why don't you copy/paste the exact code you are using rather than mangle it all up by retyping it?

M_Menon31-Oct-07 5:45

31-Oct-07 5:45

Hi Friends i am Sorry for not writing the complete code.

Here is my code

CRecordset rs( &db );
tmp.Format( _T("SELECT MAX(Polhsh_ID) FROM Polhsh WHERE Installation_ID = %d"), Installation_ID);
db.ExecuteSQL( tmp );
rs.Open( CRecordset::forwardOnly, tmp, CRecordset::readOnly );
while( !rs.IsEOF())
{
CDBVariant ID;
rs.GetFieldValue( (short)0, ID );
m_Polhsh_ID= ID.m_lVal;

Now my problem is even though my Table Polhsh is empty and has no records, it is going inside the while loop. And henceforth i get an error as the line
rs.GetFieldValue( (short)0, ID );

Thanks

Cheers

Menon

David Crow31-Oct-07 5:52

31-Oct-07 5:52

mady1380 wrote:
db.ExecuteSQL( tmp );

This statement is not necessary.

mady1380 wrote:
Now my problem is even though my Table Polhsh is empty and has no records...

How are you verifying this?

mady1380 wrote:
And henceforth i get an error as the line
rs.GetFieldValue( (short)0, ID );

What error?

M_Menon31-Oct-07 7:09

31-Oct-07 7:09

The Error is

First-chance exception at 0x77e55e02 in PigMaster-S.exe: Microsoft C++ exception: CDBException @ 0x0012dc74.

The Verification Statement is supposed to be

while( !rs.IsEOF()) //VERIFY
{

I hope the above statement is used to verify if it has data or not?

Thanks

Cheers

Menon

David Crow31-Oct-07 7:23

31-Oct-07 7:23

mady1380 wrote:
First-chance exception at 0x77e55e02 in PigMaster-S.exe: Microsoft C++ exception: CDBException @ 0x0012dc74.

Step into the GetFieldValue() call to find what statement is throwing the exception.

mady1380 wrote:
The Verification Statement is supposed to be

while( !rs.IsEOF()) //VERIFY
{

I hope the above statement is used to verify if it has data or not?

Why not issue the same SQL statement within Access to verify whether it actually has any records or not?

M_Menon31-Oct-07 7:28

31-Oct-07 7:28

Hi David

I have the seen the table.
And there are absolutely no records in the table.
And that is confirm.

My only problem is.

Why is it going inside the WHILE loop inspite of not having any records in the table?

Is
while( !rs.IsEOF()) //VERIFY
{
the proper statement to make check if the table is empty or not.

Thanks

Cheers

Menon

message box

KASR130-Oct-07 21:01

KASR1

30-Oct-07 21:01

In AfxMessageBox() we have flags like MB_YESNO, MB_OK.....
Can we have our own option like save,discard, etc instead of yes, no

Hamid_RT30-Oct-07 21:11

Hamid_RT

30-Oct-07 21:11

If you want to have othes buttons why you dont use of your dialogbox instead AfxMessageBox?

KASR130-Oct-07 21:14

KASR1

30-Oct-07 21:14

Yes i can use my own dialog box.
But i just want know is that possible or not?

Nelek30-Oct-07 22:23

Nelek

30-Oct-07 22:23

Possible is possible, subclassing and overriding, but is more work than creating your own dialog.

Greetings.

--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

Help me to understand what I'm saying, and I'll explain it better to you

Wink | ;)

Paresh Chitte30-Oct-07 21:19

Paresh Chitte

30-Oct-07 21:19

Create your own dialog template and class and instantiate whenever needed.

Regards,
Paresh.

CListCtrl problem! How to align text to left?

GauranG Shah30-Oct-07 21:28

GauranG Shah

30-Oct-07 21:28

Use MessageBoxIndirect API to create your own MessageBox with your own ICON, BUTTONS, TITILE , etc..

[ Screen Capture ][ Tool Tip ]

fantasy121530-Oct-07 20:47

fantasy1215

30-Oct-07 20:47

Default, when insert a item, The item and Subitems align text centerly, I don't know how to align text left, Please tell me if U know.

panthal30-Oct-07 20:59

panthal

30-Oct-07 20:59

hi,
go to CListCtrl properties --> style-> aline-->left.
i think it will help u

panthal

fantasy121530-Oct-07 21:03

fantasy1215

30-Oct-07 21:03

I check there, the alignment I choose left, but why don't work?

Roger Broomfield30-Oct-07 21:12

Roger Broomfield

30-Oct-07 21:12

You specify the alignment when you Insert the columns, LVCFMT_LEFT is the default. Perhaps you should review this MSDN article regarding the LVCOLUMN[^] structure and/or this one regarding CListCtrl::InsertColumn[^].

fantasy121531-Oct-07 1:18

fantasy1215

31-Oct-07 1:18

I use REPORT view.
My godness, You remind me. Yes, I've used to LVCOLUMN to insert column, Actually first I didn't use LVCOLUMN to insert column, so I didn't change the fmt to center curiously. But once I use LVCOLUMN to insert column for I want to add ImageList to the CHeaderCtrl, but I failed, and I change the fmt to CENTER curiously, I don't know it affect the alignment of the items inserted.
Now I still can't add some fancy image to the CHeaderCtrl. Wanna cry!

Hamid_RT30-Oct-07 21:12

Hamid_RT

30-Oct-07 21:12

Did you change alignments with code?

Nishad S30-Oct-07 22:58

Nishad S

30-Oct-07 22:58

Are you using the report view? If so, can you please show the code used to insert columns?

- NS -

David Crow31-Oct-07 3:45