C / C++ / MFC

9-Jan-03 4:30

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smallcoder9-Jan-03 4:59

smallcoder

9-Jan-03 4:59

please can you be more relevant please i'm so confious may be a piece of code

if you think that you can't , that means that you can : if you understand this there youn can

AlexO9-Jan-03 5:35

9-Jan-03 5:35

MSDN : MultiSoc : Illustrates Using Sockets in Multiple Threads

MSDN(SDK) : Power Outlets in Action: Windows Sockets

AlexO9-Jan-03 5:38

9-Jan-03 5:38

MSDN: CHATSRVR Sample: Demonstrates a Windows Sockets Server

smallcoder9-Jan-03 6:41

smallcoder

9-Jan-03 6:41

i did not find the mutliSoc article can you give me the link please

if you think that you can't , that means that you can : if you understand this there youn can

AlexO9-Jan-03 7:12

Problem with the registry

9-Jan-03 7:12

http://download.microsoft.com/download/vc60pro/Sample4/1/WIN98/EN-US/MultiSoc.exe

Jochem9-Jan-03 1:31

Jochem

9-Jan-03 1:31

The problem is that all data that i save in the registry is gone after windows (2000) is restarted. All data appears to be ok after the application closes. But after the restart the key is completely gone.

The code used in the app:

Opening the key:
HKEY hKeyRoot = HKEY_CURRENT_USER;
LPCTSTR pszPath = "Software\\Companyname\\My App Name\\Settings"
HKEY hKey;
DWORD dw;

RegCreateKeyEx(hKeyRoot, pszPath, 0L, NULL, REG_OPTION_VOLATILE, KEY_ALL_ACCESS, NULL, &hKey, &dw);

Writing:

int iValue = 8;
LPCTSTR pszKey = "MyInteger";
hKey as returned by RegCreateKeyEx

RegSetValueEx(hKey, pszKey, 0L, REG_DWORD, (CONST BYTE*)&iValue, sizeof(int));

Does anyone know how to prevent this and why it happens?

Thanks

I'm smart enough to know that i'm stupid and i'm stupid enough to think that i'm smart

Joan M9-Jan-03 1:39

9-Jan-03 1:39

you must change the REG_OPTION_VOLATILE to KEY_ALL_ACCESS.

Hope this helps...

Jochem9-Jan-03 2:37

Jochem

9-Jan-03 2:37

The KEY_ALL_ACCESS is the next argument

Anonymous9-Jan-03 3:23

Anonymous

9-Jan-03 3:23

I must sleep more! sorry...

Ramu Pulipati9-Jan-03 1:40

Ramu Pulipati

9-Jan-03 1:40

You have to create RegKey using options 'REG_OPTION_NON_VOLATILE' instead of 'REG_OPTION_VOLATILE'.

For more details, Check RegCreateKeyEx API in MSDN.

If you are developing MFC/ATL based app...you can use CRegKey for easy registry access.

Hope this helps.
Ramu

Jochem9-Jan-03 2:39

Jochem

9-Jan-03 2:39

This solves the problem

thanks

Joan M9-Jan-03 1:42

9-Jan-03 1:42

this way is how I do it:

HKEY hKey;
int iLength = 0;
CString csPathSubClau = "";

iLength = csNouValor.GetLength();

// Obrir la clau requerida.
csPathSubClau.Format("%s\\%s",m_csPathBase,csSubClau);

RegOpenKeyEx(HKEY_LOCAL_MACHINE,csPathSubClau,0,KEY_ALL_ACCESS,&hKey);
RegSetValueEx(hKey,csValor,0,REG_SZ,(BYTE *)csNouValor.GetBuffer(iLength),iLength);

RegFlushKey(hKey);
RegCloseKey(hKey);

Run Time Error When Using CDatabase

Michael Dunn9-Jan-03 5:39

Michael Dunn

9-Jan-03 5:39

Never use KEY_ALL_ACCESS - only request the access you need. Only admininstrators can open keys with KEY_ALL_ACCESS.

--Mike--
I'm bored... Episode I bored.
1ClickPicGrabber - Grab & organize pictures from your favorite web pages, with 1 click!
My really out-of-date homepage
Sonork-100.19012 Acid_Helm

Printing a Bitmap

fordge9-Jan-03 1:26

fordge

9-Jan-03 1:26

If im trying to print a BMP larger than the page size could sme one tell me the exact scaling method so that
1-the BMP is scaled to fit into a single page
2-The BMP is scaled without any distortion.

Im using stretchBlt without much sucess in proper scaling presently
please advise

fordge

Re: Printing a Bitmap

Roger Allen9-Jan-03 1:40

Roger Allen

9-Jan-03 1:40

You need to consider when blting the size of the image and the DPI resolution of the printer in the X/Y directions.
You can do this by using GetDeviceCaps() with LOGICALPIXELSX/Y to get the DPI resolutions and HORZRES and VERTRES to get the number of pixels available. From there you need to work out the DPI ratios and from that work out which bound (x or y) of your bitmap is largest and use that bound to scale the other correctly for your StretchBlt operation.

I don't have any code available to demostrate this, but it shouldn't be too hard to construct.

Roger Allen
Sonork 100.10016

This is a multiple choice question, choose wisely
Why did the hedgehog cross the road?
A: To show he had guts?
B: To see his flat mate?

a Good Chart ActiveX!

Ehsan Baghaki9-Jan-03 1:19

Ehsan Baghaki

9-Jan-03 1:19

is anybody knows a Good ActiveX for charting ?
another thing is i have no money to buy it Roll eyes | :rolleyes:

thnx

-=Ehsan-de-Burge=-

Muhammad Asim Ghaznavi9-Jan-03 0:27

Muhammad Asim Ghaznavi

9-Jan-03 0:27

Hi All,
I am developing a service for win 2000 on VC++, that service accesses the databse to retreive some information like user id etc. I am using CDatabase and CRecordset classes for accessing the database. but the problem is that when i call a method (that access the database) from the main service loop, it reports a Run time Error, and after that Service Application terminates. the line is
CDatabase db;
db.OpenEx("DSN=MailMove;SERVER=LOCALHOST;UID=;PWD=;DATABASE=;");
This is working fine in regular MFC Application (eg dialog based) but when i call the same method through the service's main loop, it reports the error. Confused | :confused:

Please point out any one knows about what is going wrong. Its an urgent.
Thanks in advance.
bye
Asim

Re: Run Time Error When Using CDatabase

Ramu Pulipati9-Jan-03 2:00

Ramu Pulipati

9-Jan-03 2:00

A guess:

Run() on Win32 Service is generally executed on different thread.
And CDatabase (may/may not) need MFC initialisation before its being invoked.
And AfxWinInit is used to initialse MFC for non-MFC applications.

Add the following line in the very begining of the Run() Method

if (!AfxWinInit(::GetModuleHandle(NULL), NULL, NULL, 0))
{
cerr << "MFC failed to initialize!" << endl;
return 1;
}

and maybe an instance of CWinApp. Check AfxWinInit API in MSDN for more details.

Hope this helps!
Ram

Re: Run Time Error When Using CDatabase

Muhammad Asim Ghaznavi10-Jan-03 0:22

Muhammad Asim Ghaznavi

10-Jan-03 0:22

Hi,
Thanks for replying,
I have inserted the code that u have asked, but this code is causing a
"Debug Assertion Failed!"
error. Frown | :(

Please tell me how to tackle the problem. I have an Application that can run in two modes, i.e. GUI MFC Application and NT Service.

Please reply as soon as Possible.
Thanks alot
Asim

CPropertySheet...

Raphael Kindt9-Jan-03 0:24

Raphael Kindt

9-Jan-03 0:24

Hi world...
I've created a CPropertySheet dialog, but I want to put this dialog inside another that I've created myself (with others components: editbox, etc.)
How to do that?
I dont want use CTabCtrl... But the result is almost the same one.

Thanks in advance...

Hello World!!! Smile | :)

from Raphaël

Re: CPropertySheet...

Joan M9-Jan-03 0:40

9-Jan-03 0:40

1. Insert a CStatic in the dialog.
2. Create the CPropertysheet modeless and set it's parent window as he CStatic inserted.

Hope this helps.

Sample:

Joan M9-Jan-03 2:00

9-Jan-03 2:00

this->m_pPSEstacio = new CPSEstacio("", this, 0);

this->m_pPSEstacio->Create(this, WS_CHILD | WS_TABSTOP);
this->m_pPSEstacio->ModifyStyleEx(0,WS_EX_CONTROLPARENT);  // If you don't use this you won't be able to switch to the parent window controls using tab.

this->m_pPSEstacio->ModifyStyle(0,WS_VISIBLE);

importing from a DLL...

Joan M9-Jan-03 0:15