Re: baudrate and other serial communication parameters - C / C++ / MFC Discussion Boards

Ehsan Baghaki28-Jul-08 10:39

28-Jul-08 10:39

I need an Efficient Object Management Class to add, remove, get and set (Manage Actually) objects of my own class.
I read somewhere that std::list will do this job but i did not find the function for removing objects or get or set properties of existing objects.

Any suggestions?

Re: Efficient Object Management

Cedric Moonen28-Jul-08 20:27

Cedric Moonen

28-Jul-08 20:27

Your question is not really clear but it sesems that you simply need some kind of container (std::list is a container class). Why do you call the an "Object Management Class" ?

Anyway, the way to access elements in a std::list is by using an iterator. The iterator overload * and -> operators that give you access to the object pointed by the iterator. To remove objects, simply erase the iterator (it has an erase member function).
But I suggest that you first read some tutorial about how to use those classes from the STL because it could be quite difficult to start with that without a good tutorial. Just google for it and I am sure you'll find plenty.

Cédric Moonen
Software developer

Charting control [v1.4]
OpenGL game tutorial in C++

Re: Efficient Object Management

Ehsan Baghaki29-Jul-08 1:05

Ehsan Baghaki

29-Jul-08 1:05

thanks for your help Smile | :)

baudrate and other serial communication parameters

hariakuthota28-Jul-08 9:36

hariakuthota

28-Jul-08 9:36

Hi all in my application i have to do serial communication via port.
I want to populate my comboboxes of "databits' "parity" "stopbits' "bits per second" values as how the values are populated in the hyper termainal
can anybody please suggest me the possible values for those comboboxes population.

Thanks in advance...

Re: baudrate and other serial communication parameters

Joe Woodbury28-Jul-08 10:11

Joe Woodbury

28-Jul-08 10:11

Here's one place to start:

http://msdn.microsoft.com/en-us/library/aa363214(VS.85).aspx[^]

Anyone who thinks he has a better idea of what's good for people than people do is a swine.
- P.J. O'Rourke

Re: baudrate and other serial communication parameters

Luc Pattyn28-Jul-08 10:32

Luc Pattyn

28-Jul-08 10:32

Aren't the HyperTerminal comboboxes telling you? Confused | :confused:

Luc Pattyn [Forum Guidelines] [My Articles]

Fixturized forever. Confused | :confused:

modified on Monday, July 28, 2008 4:46 PM

Re: baudrate and other serial communication parameters

hariakuthota28-Jul-08 18:18

hariakuthota

28-Jul-08 18:18

In my applicationi would like to give the comboboxes and its values as how they will be available for the hyperterminal.

more or less like a hypertermianl values for baudrate,parity,databits,stopbits etc

Re: baudrate and other serial communication parameters

Cedric Moonen28-Jul-08 20:29

Cedric Moonen

28-Jul-08 20:29

So what is your exact question ? Because ass far as I read you only wanted to know which options you can provide to the user, and for that Luc's answer was correct. But apparently it wasn't because you (I guess) voted him down. So what are you looking for exactly ? What is your problem ?

Cédric Moonen
Software developer

Charting control [v1.4]
OpenGL game tutorial in C++

MFC/Win32 Enumerate Font size ?

Maximilien28-Jul-08 9:31

Maximilien

28-Jul-08 9:31

Is there a way to get/enumerate the available sizes for a particular font ? heck, I don't even know if it does make
sense.

I only found example where the sizes are added manually (6, 8, 10, ...), but not automatically.

Not urgent.

Thanks.

Max.

This signature was proudly tested on animals.

Re: MFC/Win32 Enumerate Font size ?

_AnsHUMAN_ 28-Jul-08 9:42

_AnsHUMAN_

28-Jul-08 9:42

MSDN:The EnumFontFamiliesEx function enumerates all fonts in the system that match the font characteristics specified by the LOGFONT structure. EnumFontFamiliesEx enumerates fonts based on typeface name, character set, or both.

Maximilien wrote:
Not urgent.

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: MFC/Win32 Enumerate Font size ?

Maximilien29-Jul-08 7:23

Maximilien

29-Jul-08 7:23

Thanks.

according to this[^] it can work for NON true type fonts.

For true-type fonts, it does not matter.

shortcut for menu operations

hariakuthota28-Jul-08 8:54

hariakuthota

28-Jul-08 8:54

Hi i want to use the shortcuts for handling the menu operations in my application.
can anybody suggest me how to do that??????

For ex:if i click "ctrl+ space" window shud exit etc...

Thnaks in advance

tooltips for controls in the group box

hariakuthota28-Jul-08 8:52

hariakuthota

28-Jul-08 8:52

Hi all i am new to vc++.
i want to have tooltips for the controls in my application but i am not able to generate the tool tips for the controls inside the group box using

ON_NOTIFY_EX(TTN_NEEDTEXT,0,OnToolTipNotify)

Can anybody suggest me the apt way for doing it..

Thanks in advance

Re: tooltips for controls in the group box

fantasy121528-Jul-08 16:52

fantasy1215

28-Jul-08 16:52

I'm a newbie to MFC or even WIN32 GDI programming too.
I've tried your test.(Eg, deal with TTN_NEEDTEXT notification)
Yes, in the group box it doesn't work at all.

But indeed, we can figure out this problem by using ::CreateWindowEx, passing the TOOLTIPS_CLASS as the window class name,
This link would help you.http://www.codeproject.com/KB/cpp/Tool_Tip.aspx[^]

If you're using VC6.0, you'll encounter this compile error:

<br />
error C2065: 'TTS_BALLOON' : undeclared identifier

I haven't found an excellent resolution. And I googled, someone fixed this by adding this line(in the stdafx.h or somewhere):

<br />
#define   TTS_BALLOON   0x40

If you found why 'TTS_BALLOON' showed undeclared, please reply my thread, I'd like to know too.

Re: Wanna show multi-lines in the tooltip

fantasy121528-Jul-08 19:34

fantasy1215

28-Jul-08 19:34

Excute me, I wanna to show multi-lines in the tooltips. I add '\n' in the text, it doesn't work.
Can somebody help me?

DWORD dwToolStyle = WS_EX_TOOLWINDOW | WS_EX_TOPMOST |WS_EX_WINDOWEDGE;
m_hwndTooltip = ::CreateWindowEx(dwToolStyle, TOOLTIPS_CLASS, NULL,
	WS_POPUP | TTS_ALWAYSTIP | TTS_NOPREFIX | TTS_BALLOON,
	CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT,
	this->GetSafeHwnd(), NULL, ::AfxGetResourceHandle(), NULL);
ASSERT(m_hwndTooltip);

::SendMessage(m_hwndTooltip, TTM_ACTIVATE, (WPARAM)TRUE, NULL);
::SendMessage(m_hwndTooltip, TTM_SETDELAYTIME, TTDT_INITIAL, MAKELONG(1000, 0));
::SendMessage(m_hwndTooltip, TTM_SETDELAYTIME, TTDT_AUTOPOP, MAKELONG(1000, 0));
::SendMessage(m_hwndTooltip, TTM_SETDELAYTIME, TTDT_RESHOW, MAKELONG(1000, 0));

TOOLINFO info = {0};
info.cbSize = sizeof(TOOLINFO);
info.uFlags = TTF_CENTERTIP | TTF_IDISHWND | TTF_SUBCLASS;
info.hwnd = this->GetSafeHwnd();
info.uId = (UINT)::GetDlgItem(this->GetSafeHwnd(), IDC_APPLE);	//给IDC_APPLE添加tooltips
info.rect = CRect(0, 0, 0, 0);
info.hinst = ::AfxGetResourceHandle();
info.lpszText = _T("You can check this to see\n\n\nwhat is this"); //<font color="blue">I wanna multi-lines effection, but doesn't work, please help me!</font>
if ( !::SendMessage(m_hwndTooltip, TTM_ADDTOOL, NULL, (LPARAM)&info) )
{
	::AfxMessageBox("Add tool fail");
}

Problem with DLL

Nandu_77b28-Jul-08 6:20

Nandu_77b

28-Jul-08 6:20

Hi,

We have create a C++ DLL. While creating this DLL we have included "string.h" "vector.h" etc and so on...
We are able to compile and able to use exported functions in sample program with out any error.

We have distributed our DLL with .lib and .h files. He reports that when he includes our .h file in his program, it is not compiling (compile or link errors). He is tell this is boz because it has multiply defines. Is there any way to avoide this?

-Nandu

Re: Problem with DLL

led mike28-Jul-08 6:30

led mike

28-Jul-08 6:30

Nandu_77b wrote:
We have distributed our DLL with .lib and .h files. He reports that when he includes our .h file in his program, it is not compiling (compile or link errors). He is tell this is boz because it has multiply defines. Is there any way to avoide this?

Yes. Before distributing your DLL,lib and H files to "him", test them in your own project before you distribute them.

led mike

Re: Problem with DLL

Luc Pattyn28-Jul-08 7:14

Luc Pattyn

28-Jul-08 7:14

first debugging, now testing.
What will you ask for next, documentation?

Luc Pattyn [Forum Guidelines] [My Articles]

Voting for dummies? No thanks. Dead | X|

Re: Problem with DLL

led mike28-Jul-08 7:34

led mike

28-Jul-08 7:34

Luc Pattyn wrote:
What will you ask for next, documentation?

Yes that was my plan. Then I was planning on asking for thinking next. I am trying to ease people into the concept. Wink | ;)

led mike

Re: Problem with DLL

toxcct28-Jul-08 6:31

toxcct

28-Jul-08 6:31

probably because he is including your header several times, and because your header is not robust.

have you set an exclusive inclusion system in it (like the following) ?

//header.h
 
#pragma once //depending on the compiler. not all support this
 
 
//your header body here...

//header.h
 
#ifndef __HEADER_H_INCLUDED__
#define __HEADER_H_INCLUDED__
 
//your header body here...
 
#endif

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

Re: Problem with DLL

Nandu_77b29-Jul-08 0:06

Nandu_77b

29-Jul-08 0:06

Hi,

Thanks Toxcct,

Do i Need to add the below in my header file

//header.h
#ifndef __HEADER_H_INCLUDED__
#define __HEADER_H_INCLUDED__
//your header body here...
#endif

OR

Who is going to use the DLL should include my header as below?

#ifndef __HEADER_H_INCLUDED__
#define __HEADER_H_INCLUDED__
header.h
#endif

Which is the correct and best approach?

-Nandu

Re: Problem with DLL

toxcct29-Jul-08 0:23

toxcct

29-Jul-08 0:23

yes, you put the #ifndef construction in your own header.

now, each time the file is included, this stuff prevents the header content to be actually included more than once.

check this:

yourheader.h
 
<hr width="95%" />
 
src1.h:
#include "yourheader.h"
//...
 
<hr width="95%" />
 
src1.cpp:
<code>#include "src1.h"</code>
#include "yourheader.h"
//...

do you see what happens in src1.cpp ?
the user is including his own header (src1.h), and your header (yourheader.h).
but the problem is that in src1.cpp, when including yourheader.h, it is already included (by src1.h), thus the "already defined identifier" error.

so by putting such a code in your own header, you prevent such an error to occur; if the header is #included several times in the same compilation unit, only the first inclusion will be taken in account...

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

Re: Problem with DLL

Nandu_77b29-Jul-08 0:29

Nandu_77b

29-Jul-08 0:29

The above eplaination gives me clear understanding, Thanks a lot.

Just for my clarification, one can include yourheader.h file only in src1.h and no need to include it again in src1.cpp. IS this correct?

-Nandu

Re: Problem with DLL

toxcct29-Jul-08 0:31

toxcct

29-Jul-08 0:31

yes of course, my example was a bit too fast, but it happens (and i believe that's what happened to you) when you include files that include files that include.... and you can't control exactly what's included anymore...

[VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

Re: Problem with DLL

ThatsAlok29-Jul-08 0:21

ThatsAlok

29-Jul-08 0:21

TOx back after long time.. great!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You/xml>

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.