Re: Doubts printing - C / C++ / MFC Discussion Boards

Joaquín M López Muñoz6-Feb-03 7:12

6-Feb-03 7:12

If you include the body of a function inside the class definition, then it is the same as if you qualify it with inline. That is,

class A
{
  int f(){cout<<1<<;}
};

is equivalent to

class A
{
  inline int f();
};
...
int A::f()
{
  cout<<1;
}

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: why?

Joan M6-Feb-03 21:25

Joan M

6-Feb-03 21:25

Hello,

First of all thank you for your answer, it has explained me other thing that I didn't know, but after removing the inline, it makes the more or less the same:

1. I can't debug the function properly (some times I can debug it (the compiler stops at the breakpoint) and sometimes not and the function is being called (I'm sure about that last part)).

2. The functions involved (there are various functions placed in the header file) continue without appearing in the ClassView...

Could you tell me what's happening?

As always, thank you in advance...

Re: why?

Joaquín M López Muñoz6-Feb-03 21:30

Joaquín M López Muñoz

6-Feb-03 21:30

1. I think this is a problem with the debugger and template member functions (I've experienced similar strange things in the past). One way (not tested myself) to make sure the debugger always stops is as follows:

template<typename T> void CMyClass::Whatever()
{
  DebuggerStopper();
  ...
}
 
void CMyClass::DebuggerStopper()
{
} // place the breakpopint here

2. The class viewer is crap, I don't know any fix for that.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: why?

Joan M6-Feb-03 22:03

Joan M

6-Feb-03 22:03

Well, thank you, I've tested it and it worked OK, I'll be able to detect errors in those functions now.

Talking about the other thing... I think I'll be able to live with it... moreover when I'll place that code inside a DLL for further use of it.

as always, thank you very much.

Re: Debugging functions placed in the header file...

-=jarl=-6-Feb-03 10:13

-=jarl=-

6-Feb-03 10:13

inline might be your culprit...

-=jarl=-

Re: Debugging functions placed in the header file...

Joan M6-Feb-03 20:16

Joan M

6-Feb-03 20:16

Hello,

First of all thank you for your answer, but after removing the inline, it makes the same:

1. I can't debug the function properly (some times I can debug it (the compiler stops at the breakpoint) and sometimes not and the function is being called (I'm sure about that last part)). Unsure | :~

2. The funtions involved (there are various functions placed in the header file) continue without appearing in the ClassView...

thank you in advance...

Doubts printing

doctorpi6-Feb-03 5:18

doctorpi

6-Feb-03 5:18

HI guys
I'm really newbie coding printing and I have the following doubt.
I'm doing calculations and depending of the result I have to print or not.
If the result is 0 the page doesn't have to be printed in any other case yes.
But if I'm not wrong , the number of pages has to be fixed in OnPreparePrinting and then... what do you suggest to me to do to avoid print blank pages when the result is 0.
I hope do you understand my question.
Best Regards and thank you.
Doctor pi

Re: Doubts printing

Roger Allen6-Feb-03 5:44

Roger Allen

6-Feb-03 5:44

From MSDN:
Another example is the case in which the length of the document is not known until it is printed. In this situation, the view class tests for the end of the document each time a page is printed. When the end is reached, the view class sets the m_bContinuePrinting member of CPrintInfo to FALSE; this informs the framework to stop the print loop

Look up the CPrintInfo structure for additional info.

Roger Allen
Sonork 100.10016

WHats brown and sticky?
A stick or some smelly stuff!

Simulating ToolBar Press

Jawache6-Feb-03 4:43

Jawache

6-Feb-03 4:43

How can I simulate a toolbar press, not just the PressButton function since this does not call the function, but the actuall calling of the function related to the toolbar button.

Cheers

Asim

Asim Hussain
e: asim@jawache.net
w: www.jawache.net

Re: Simulating ToolBar Press

Roger Allen6-Feb-03 5:46

Roger Allen

6-Feb-03 5:46

Can you not just send yourself the correct WM_COMMAND message?

AfxGetApp()->SendMessage(WM_COMMAND, ID_TOOLBAR_BUTTON, 0);

Roger Allen
Sonork 100.10016

WHats brown and sticky?
A stick or some smelly stuff!

Re: Simulating ToolBar Press

Jawache6-Feb-03 5:58

Jawache

6-Feb-03 5:58

Thanks...

Just figured that one out for myself.. i was using AfxGetApp()->SendMessage(ID_TOOLBAR_BUTTON, 0, 0);

and wondering why it wasn't working?!?!?!?

Thanks again...

Asim.

Asim Hussain
e: asim@jawache.net
w: www.jawache.net

program too big for mem

stv6-Feb-03 4:29

stv

6-Feb-03 4:29

Dear all,
I have written a program and try to run it but get this Dos
screen and message
" Program too big to fit into meemory"

Anybody pls help!!! WTF | :WTF:

thanks you Hmmm | :|

Re: program too big for mem

Willem B6-Feb-03 4:33

Willem B

6-Feb-03 4:33

what do you do in the program?

[]D [] []D []

Re: program too big for mem

AlexO6-Feb-03 4:48

AlexO

6-Feb-03 4:48

Operating sytem? (Dos 3.1?)
How big is your program?
Do you have any global static arrays?

Re: program too big for mem

stv6-Feb-03 17:24

stv

6-Feb-03 17:24

Well, i add a few clines for helps files in my project, and complie no problem, but when exe, the message appears

Any expert can solve this problem??? Cry | :((

btw,the system i used is p2 500mhz, os win2000 pro ram 256MB

thanks Hmmm | :|

Re: program too big for mem

Ted Ferenc6-Feb-03 7:46

Ted Ferenc

6-Feb-03 7:46

Are you using 98 with > 512MB of memory? I seem to remember a friend getting these error messages when he upgraded his PC. There is a "system feature" with 98. i.e. you can't have > 512MB of memory.

It is always worth trying the prog on another PC.

If I have seen further it is by standing on the shoulders of Giants. - Isaac Newton 1676

Encrypting technique for simple CString

Willem B6-Feb-03 4:29

Willem B

6-Feb-03 4:29

Does anyone know a good unique Encrypting technique to encrypt a string? or a article to read about it?

[]D [] []D []

Re: Encrypting technique for simple CString

C^hris L^osinger6-Feb-03 5:01

C^hris L^osinger

6-Feb-03 5:01

http://www.codeproject.com/cpp/#Cryptography

-c

Get there first with something patented, proprietary, and broken, then send lawyers after anyone who points out problems. --- Peter Gutmann

Fractals

Re: Encrypting technique for simple CString

Miguel Ortiz6-Feb-03 8:43

Miguel Ortiz

6-Feb-03 8:43

Hola Willem:

Yo tengo dos alternativas:
1. Uso
CString stFrase;
stFrase.Replace("e", " ");
...
//Esto reemplaza la letra "e" por un espacio, lo hago varias veces con varias letras y al final queda encriptado.
Nos vemos
Smile | :)

Saludos desde el Caribe Mexicano

CSplitterWnd is evil!

SomeUser6-Feb-03 3:47

SomeUser

6-Feb-03 3:47

Hi
I'm trying to create a CSplitterWnd within a CFrameWnd, but I have some problems with that... or MFC. I'm creating the CFrameWnd by calling the Create function, and passing a NULL to the pContext parameter because i don't know how to fill the CCreateContext with valid data.
But my problems starts in the OnCreateClient of the CFrameWnd, when i'm trying to create the CSplitterWnd.

Doing something like this:

<br />
BOOL CMyFrameWnd::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext)<br />
{<br />
 <br />
 <br />
	m_MySplitterWnd.CreateStatic (this, 2, 1);<br />
<br />
  	m_MySplitterWnd.CreateView (0, 0, RUNTIME_CLASS(CMyView), CSize(100,100), pContext);<br />
	m_MySplitterWnd.CreateView (1, 0, RUNTIME_CLASS(CMyView), CSize(100,100), pContext);<br />
  <br />
<br />
	return TRUE;<br />
}<br />

As expected, the pContex is NULL and apparently i'm not allowed to call CreateView and pass NULL to the pContext. CreateView returns FALSE, and after that i'm getting a bunch of assertions and an access violation. So what am i supposed to do to get this to work?

Re: CSplitterWnd is evil!

Zdeslav Vojkovic6-Feb-03 5:54

Zdeslav Vojkovic

6-Feb-03 5:54

I guess you create frame wnd from parents OnCreate() method. If so, you should be able to obtain CCreateContext from LPCREATESTRUCT:

CCreateContext* pContext = (CCreateContext*)lpCreateStruct->lpCreateParams;

Re: CSplitterWnd is evil!

SomeUser6-Feb-03 7:03

SomeUser

6-Feb-03 7:03

Well, I'm doing a MDI app so that would work if I create the CFrameWnd from the MDI child window. But I want to create the window before any MDI child window i created... and the lpCreateStruct->lpCreateParams == NULL in the OnCreate() of the MainFrame for some reason. Any other idea? Smile | :)

Registry Reading with CRegKey

naradaji6-Feb-03 3:42

naradaji

6-Feb-03 3:42

Hi,
I'm using CRegKey to read a value from the registry. It's the name of the Citrix ICA Client:
HKEY_LOCAL_MACHINE\SOFTWARE\Citrix\ICA Client
and the key is ClientName.

I use the following:

CRegKey regKey;<br />
			LONG Errr = regKey.Open(HKEY_LOCAL_MACHINE, "Software\\Citrix\\ICA Client", KEY_READ);<br />
			ASSERT(ERROR_SUCCESS == Errr);<br />
<br />
			CString csValue;<br />
			LPTSTR lpBuf = csValue.GetBufferSetLength(MAX_PATH);<br />
			ULONG length = MAX_PATH;<br />
			<br />
			Errr = regKey.QueryValue(lpBuf,"ClientName", &length);<br />
			ASSERT(ERROR_SUCCESS == Errr);<br />
<br />
			csValue.ReleaseBuffer();<br />
			MessageBox(csValue);

And the messagebox displays an empty string!
What am I doing wrong?

Thanks,

-- narada

Re: Registry Reading with CRegKey

naradaji6-Feb-03 4:04

naradaji

6-Feb-03 4:04

Forget about this, it works perfect!
I mistyped the name of the key!

Sorry!

-- naradaji

creating a grayscale "rainbow" in code

ns6-Feb-03 3:17

6-Feb-03 3:17

Basically I want a pointer to a bmp that has the graded shades of gray in it, and is to be of a certain number of rows and columns of pixels.

How do I generate such a pointer? Are there any links to creating a thing like this in code? I dont have the bmp already...I need to generate it in code.

Appreciate your help,
ns

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