C / C++ / MFC Discussion Boards

HintiFlo30-Jan-02 23:09

30-Jan-02 23:09

Hi Jerome

there you find the article, source and demo:
http://www.codeproject.com/cpp/duration.asp

what is your app made for?

mfg HintiFlo

Re: timer

Jerome Conus31-Jan-02 3:15

Jerome Conus

31-Jan-02 3:15

Thank you for the information !

I'm working on a real-time App, which controls a machine, but we're having problems reaching the required speed of the machine. Thus, I wanted to check where, in the software, we are loosing time ! It's not easy !!!

Tanks again and best regards, (or mfg, should I say !!! Wink | ;-)

)
Jerome

App.path Alternative in c++ dll

jayantbichhal24-Jan-02 0:37

jayantbichhal

24-Jan-02 0:37

hi all
i want to read a text file from the sdk dll, the text file is saved at the same path as dll .Basically i want an alternative of App.Path of vb into c++.I have tried getModulefileName and GetCurrentDirectory but in vain.

thanks for stopping by.

cheers
jayant
Confused | :confused:

Jayant Bichhal

Re: App.path Alternative in c++ dll

Joaquín M López Muñoz24-Jan-02 4:16

Joaquín M López Muñoz

24-Jan-02 4:16

I'm not sure what your problem is. GetModuleFileName returns the complete path of the specified module, so to obtain the path without the name of the module you should do something like:

char strPath[_MAX_PATH];
GetModuleFileName(NULL,path,sizeof(path)/sizeof(path[0]));
char *pSlash=strrchr(path,'\\');
if(pSlash)pSlash[1]='\0';

This gives you the path for the .EXE that loaded your DLL. If what you want is the path of the DLL itself, then replace GetModuleFileName(NULL,...) with GetModuleFileName(hInstance,...), where hInstance is the hInstance passed to your DllMain entry point.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Child windows inside a class (W32, not MFC)

23-Jan-02 21:38

I am trying to create a child window inside a class. I have the hwnd and hinstance to the main window available to the class. The problem that I am having is that the class needs to handle the WNDPROC for the window. I figure that MFC does something like this, but seeing that we cant view the complete MFC source code, I can't see how it is done there. Anyone have any input?

Re: Child windows inside a class (W32, not MFC)

Michael P Butler23-Jan-02 22:15

Michael P Butler

23-Jan-02 22:15

From Paul Dilascia's Windows ++

//////
// Now "hook" the window's window proc--i.e., subclass it, saving
// the original window procedure.
//
oldProc = (WNDPROC)GetWindowLong(hwnd, GWL_WNDPROC);
SetWindowLong(hwnd, GWL_WNDPROC, (LONG)theApp->getWndProc());

The book is well worth reading if you are attempting to create your own Windows class framework.

The source-code to the book is available at http://www.dilascia.com/wpp.htm

Michael Smile | :)

MAC Address

ZAZA23-Jan-02 21:31

ZAZA

23-Jan-02 21:31

I am working on the MAC address of net boards.
Does the first byte always 00 ?
Is there a signification of each byte or pair of bytes ?

elisabeth.sever@europlacer.fr

OnChar is not needed in ScrollView?

AnonymousBabe@usa.net23-Jan-02 20:31

AnonymousBabe@usa.net

23-Jan-02 20:31

i have seen an application which does not offer the handler of OnChar() in the Scrollview, but it's on effect, when you press down a key. why?
thanks

one is the other who absorbs the thoughts of others

Searching Programmer

Sonu Kapoor23-Jan-02 20:22

Sonu Kapoor

23-Jan-02 20:22

Hi guys,

i am searching indian reliable programmers, who want to work daily for some hours...

Please reply directly to my email account vikasde@rediffmail.com

Thanx in Advance

Best Regards

Sonu

Re: Searching Programmer

Braulio Dez23-Jan-02 23:20

Braulio Dez

23-Jan-02 23:20

Hi,

CodeProject has free section for your purpose, then you can post job offers and it´s free ( and detail it more, which skills and that stuff, take a look at:
http://www.codeproject.com/script/jobs/jobs.asp

Good luck
Braulio

Ps.: By the way I work in a consultancy firm, so if you need some programmers ( well they are not indians, but Norweggian and Spanish, not sooo bad Wink | ;-)

), ...

Send Mail!

Mazdak23-Jan-02 18:51

Mazdak

23-Jan-02 18:51

I want to send mail in ATL!Where should I begin? Confused | :confused:

Thanks

Re: Send Mail!

Nish Nishant23-Jan-02 19:01

Nish Nishant

23-Jan-02 19:01

Can't you use normal Winsock calls?
Connect to some smtp server, and send mail using direct smtp chat.

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

Re: Send Mail!

Jon Sagara23-Jan-02 19:18

Jon Sagara

23-Jan-02 19:18

I have never used ATL, but perhaps you can use PJ Naughter's SMTP class.

Jon Sagara

What about ?

Re: Send Mail!

Braulio Dez23-Jan-02 23:23

Braulio Dez

23-Jan-02 23:23

Hi !

I don´t know if that would work, but IIS includes some COM thing called DONTS, and are some COM objects that let you for exmaple send one e-mail using VBScript and ASP, so if it is going to be in the server side maybe you can use that...

HTH
Braulio

Question about Printing

Eugene Pustovoyt23-Jan-02 18:26

Eugene Pustovoyt

23-Jan-02 18:26

Hello everybody!

How can I change the type of sheets (portrait <-> landscape) runtime printing in the Doc/View Architecture.
For example:
1st sheet as portrait, 2nd sheet as landscape, 3rd - portrait again and etc.

Best regards,
Eugene Pustovoyt

Sonork ID 100.10002:Yaumen

Re: Question about Printing

Mazdak23-Jan-02 18:52

Mazdak

23-Jan-02 18:52

I think you should check "CPrintDialog" Smile | :)

Re: Question about Printing

Eugene Pustovoyt23-Jan-02 19:59

Eugene Pustovoyt

23-Jan-02 19:59

In the CPrintDialog, I can select alone type sheet (or portrait or landscape).
And I need change type sheet in the OnPrint() or OnPrepareDC() functions!

How!?

Best regards,
Eugene Pustovoyt

Sonork ID 100.10002:Yaumen

Re: Question about Printing

567890123424-Jan-02 2:36

5678901234

24-Jan-02 2:36

See example in MSDN topic CWinApp::GetPrinterDeviceDefaults.

WinDVD or PowerDVD can be followed by parameters in application?

23-Jan-02 17:00

for example:/Play,/Close,etc.;P

justcall

ActiveX or ActiveX???

Phil F23-Jan-02 14:17

Phil F

23-Jan-02 14:17

When building a new component the Wizard offers two choices.
(1) ATL COM AppWizard and (2) MFC ActiveX Control Wizard

Why would you choose one over the other?

My initial thoughts are:
A. Our product depends on MFC so avoiding it in new components will gain me nothing.
B. Choice two seems to have better Wizard support, especially when adding Events.

Can you point me in the direction of what to read so I can compare and contrast these two options?
Do you have a preference?
OMG | :OMG:

Re: ActiveX or ActiveX???

Nish Nishant23-Jan-02 16:21

Nish Nishant

23-Jan-02 16:21

If you want a nice thin control use the ATL COM wizard.

If you want a bigger control that also needs the MFC DLLs then use the MFC wizard.

Nish

Sonork ID 100.9786 voidmain
www.busterboy.org
If you don't find me on CP, I'll be at Bob's HungOut

Re: ActiveX or ActiveX???

Phil F24-Jan-02 3:51

Phil F

24-Jan-02 3:51

Thin just refers to an objects size?
There is no more overhead communicating with one object than the other, is there? All that invoke helper stuff I mean.

Extracting objects to array

HomeNuke23-Jan-02 14:07

HomeNuke

23-Jan-02 14:07

How do I extract a gob of class information to an array? For example say I have a class:

class Box
{
int Right;
int Left;
int Bottom;
};

Let's say it's 96bytes in Size. There is another function that returns the class but it is now 480bytes in size. From that and doing calculations there is 5 objects of that size that was returned. How do I assign that information into an array? Or, what is the best way to extract each piece of the class?

Thanks

HomeNuke
----
"Nuke'd Your Home, Yet?"
Run your own PostNuke based web server from home
http://www.homenuke.com

Re: Extracting objects to array

Jon Hulatt23-Jan-02 23:14

Jon Hulatt

23-Jan-02 23:14

Tip: always name your classes C*

class CBox
{
  int Right;
  int Left;
  int Bottom;
};


// assuming SomeFunc is the function that returns the pointer
// to a blob of memory with those classes in it. And it sets 
// nSize to be the size of the memory allocated.
int nSize;
CBox *p_BoxArray = (CBox *) SomeFunc(&nSize);

int NumberOfObjectsInArray = nSize / sizeof(CBox);

for (int i=0; i < NumberOfObjectsInArray ; i++)
{
   cout << p_BoxArray[i]->Right << "\n";
}

// remember to free the memory when you're done with it.

why does this work? well, you can use a pointer as if it were an array (there isn't really any difference between them, in fact.). Logically speaking, incrememnting a pointer does not make it point to that memory address + 1 byte, it makes it point to that memory address + (the size of whatever object it points to).

Sorry to dissapoint you all with my lack of a witty or poignant signature.

Re: Extracting objects to array

HomeNuke24-Jan-02 5:32

HomeNuke

24-Jan-02 5:32

Jon,

Thanks for your answer! It is exactly what I needed to point me in the right direction. Well, your answer practically kicked me in the right direction because it was so detailed.

Thanks Again.

Also did some further thought wouldn't this returned memory also be defined as an array of the object? Shouldn't we be able to access the returned information as an array? Or, is an array defined internally as something different or different flags are set in the memory space that an array occupies? Just questions...

HomeNuke
----
"Nuke'd Your Home, Yet?"
Run your own PostNuke based web server from home
http://www.homenuke.com

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