Re: Precompiler Directive - C / C++ / MFC Discussion Boards

Re: MFC Multiple windows (pages)

David Crow2-Sep-04 2:45

David Crow

2-Sep-04 2:45

What you are referring to is a multiple-document interface (MDI). Examples are bountiful.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Re: MFC Multiple windows (pages)

Jens Christiansen2-Sep-04 8:57

Jens Christiansen

2-Sep-04 8:57

yes, but I would like my application to work with exact lets say 4 windows (pages) and no option to create more.

Re: MFC Multiple windows (pages)

David Crow2-Sep-04 9:23

David Crow

2-Sep-04 9:23

The number of open documents can easily be controlled.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Fun with Loading Windows Drivers

Joel Holdsworth2-Sep-04 1:31

Joel Holdsworth

2-Sep-04 1:31

Hi,
I'm working on a project in which I need to load and install a USB device driver as part of my setup procedure. So I'm basically messing around trying to get this device installed manually, before I add it to the setup script.

I have a problem though... After my latest attempt, I get this error message in the device properties box:

"This device is not working properly because Windows cannot load the drivers required for this device. (Code 31)"

Does anyone know if there's a log somwhere or somthing which I can use to find out what exactly went wrong?

Joel Holdsworth

Re: Fun with Loading Windows Drivers

Alexander ^M.,2-Sep-04 9:33

Alexander ^M.,

2-Sep-04 9:33

the file ist called setupapi.log and should be located in the windows directory.

Don't try it, just do it! Wink | ;-)

Precompiler Directive

Anonymous2-Sep-04 1:12

Anonymous

2-Sep-04 1:12

Hi
What are the advantages/disadvantages of using #define or pany precompiler directives?

Thanks in adavnce

Ram

Re: Precompiler Directive

Joel Holdsworth2-Sep-04 1:39

Joel Holdsworth

2-Sep-04 1:39

The precomiler is both a blessing and a curse. It can really help you work round obstacles, but it can often have problems with compatibility with other compilers.

The main statments like #define, #ifdef, #ifndef, #endif and so on will work on any compiler. Others like #pragma once will only work on MSVC.

#define

is useful in defining constants, and in activating and deactivating sections of code. However if you plan to use #define for constants, it's always better to use a global C constant instead:

const unsigned int MyValue = 100;

Because the syntax checker can dig you out of problems this way. Also, try and avoid macros - use inline functions instead because again you may end up with crazy inexplicable compiler errors.

Joel Holdsworth

Re: Precompiler Directive

Henry miller2-Sep-04 3:21

Henry miller

2-Sep-04 3:21

The main advantage is with proper use of the precompiler directives you can win the Internation Obfuscated C code contest

The other time you will see it is in header files, to make sure that the header isn't accidently included twice. The rule is if there is a way to do what you want without using the precompiler do it, but sometimes you don't have a choice.

If you don't know what the IOCCC is, check it out when you are prepared to be confused. Good programs will enjoy it, for the joke, the chance to learn some really stupid code, and to test the knowledge of C.

Create Process on remote machine

vikramlinux2-Sep-04 1:02

vikramlinux

2-Sep-04 1:02

How to Create Process on remote server?

VikramS

Re: Create Process on remote machine

jmkhael2-Sep-04 3:02

jmkhael

2-Sep-04 3:02

Check http://www.codeguru.com/Cpp/I-N/network/remoteinvocation/article.php/c5433/[^]

Papa

while (TRUE)
Papa.WillLove ( Bebe ) ;

Interrupt in VC++

Puah2-Sep-04 0:32

Puah

2-Sep-04 0:32

To Hello,

I have a expansion card which has a connection to interrupt 15 pin of the PC.
How do I use VC++ 6.0 to detect the interrupt and do the necessary processing?
Is there any examples or articles that I can refer to?
Thanks.

S1189216G

Re: Interrupt in VC++

RadioShark2-Sep-04 8:00

RadioShark

2-Sep-04 8:00

Hi,

Use SDK coming with your card.
Otherwise, you should write own Windows driver using DDK.
Windows API doesn't allow working with the interruptes directly.

Sincerely Yours,
RadioShark

Re: Interrupt in VC++

Puah2-Sep-04 14:43

Puah

2-Sep-04 14:43

To RadioShark,

Thanks for your reply.
Any examples, links or article that I can go to?
Can I use C code interrupt handler?
If yes, how should be done?

S1189216G

Re: Interrupt in VC++

RadioShark2-Sep-04 18:28

RadioShark

2-Sep-04 18:28

Working with the interruptes and IOports directly is allowed in MSDOS. So, you can use C or C++ for MSDOS.

In MS Windows, you should write own driver. You will find the examples of driver in DDK.

Sincerely Yours,
RadioShark

programatically change the title of an application

si_692-Sep-04 0:00

si_69

2-Sep-04 0:00

Hi All

does ne1 know how to programatically change the title of an application

when i say title i mean, whats in the blue bar at the top of your app

thanks

si

Re: programatically change the title of an application

Neville Franks2-Sep-04 0:29

Neville Franks

2-Sep-04 0:29

If you are talking MFC then use: CMainFrame::OnUpdateFrameTitle()

Neville Franks, Author of ED for Windows www.getsoft.com and coming soon: Surfulater www.surfulater.com

Re: programatically change the title of an application

Antony M Kancidrowski2-Sep-04 1:15

Antony M Kancidrowski

2-Sep-04 1:15

You can use SetWindowText()

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Re: programatically change the title of an application

Neville Franks2-Sep-04 9:55

Neville Franks

2-Sep-04 9:55

Antony M Kancidrowski wrote:
You can use SetWindowText()

This gets overwritten by MFC for the app title bar. See my reply.

Neville Franks, Author of ED for Windows www.getsoft.com and coming soon: Surfulater www.surfulater.com

Re: programatically change the title of an application

Antony M Kancidrowski2-Sep-04 22:51

Antony M Kancidrowski

2-Sep-04 22:51

Whoops, yes it does, sorry!

Ant.

I'm hard, yet soft.
I'm coloured, yet clear.
I'm fruity and sweet.
I'm jelly, what am I? Muse on it further, I shall return! - David Williams (Little Britain)

Shutdown and restart

De Nardis Andrea1-Sep-04 23:57

De Nardis Andrea

1-Sep-04 23:57

Hi all,
I have a service that handles SERVICE_CONTROL_SHUTDOWN so it is notified of the shutdown in progess. I need to distinguish between a restart and a shutdown. Is there a way to do so?
Thanx in advance.
Best regards,
Andrea Smile | :)

Re: Shutdown and restart

David Crow2-Sep-04 2:49

David Crow

2-Sep-04 2:49

Look at the WM_QUERYENDSESSION and WM_ENDSESSION messages.

"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen

Why LoadMenu() Failed! Errorcode=1814

YunYan1-Sep-04 23:34

YunYan

1-Sep-04 23:34

There is a application with multiple document support(A document is associated with a few kind of views and managed by CMultiDocTemplate).If i open a new document and then close it for many times, i can’t open any window finally, even opening a pop-up menu in another process is unavailable. I think it due to the following code.But i don't know why it works well at the beginning. Is there a resource leakage? Sleepy | :zzz:

Thanks for your help!

<br />
void CMultiDocTemplate::LoadTemplate()<br />
{<br />
	CDocTemplate::LoadTemplate();<br />
<br />
	if (m_nIDResource != 0 && m_hMenuShared == NULL)<br />
	{<br />
		HINSTANCE hInst = AfxFindResourceHandle(<br />
			MAKEINTRESOURCE(m_nIDResource), RT_MENU);<br />
		m_hMenuShared = ::LoadMenu(hInst, MAKEINTRESOURCE(m_nIDResource)); //Note: m_MenuShared is null, and GetLastError() returns 1814<br />
		m_hAccelTable =<br />
			::LoadAccelerators(hInst, MAKEINTRESOURCE(m_nIDResource));<br />
	}<br />
<br />
#ifdef _DEBUG<br />
	// warnings about missing components (don't bother with accelerators)<br />
	if (m_hMenuShared == NULL)<br />
		TRACE1("Warning: no shared menu for document template #%d.\n",<br />
			m_nIDResource);<br />
#endif //_DEBUG<br />
}<br />

Re: Why LoadMenu() Failed! Errorcode=1814

AssemblySoft1-Sep-04 23:41

AssemblySoft

1-Sep-04 23:41

1814 The specified resource name cannot be found in the image file.
ERROR_RESOURCE_NAME_NOT_FOUND

Carl

Wait for your Help!

YunYan2-Sep-04 1:07

YunYan

2-Sep-04 1:07

Thanks for your help!

Yeah, Code 1814 means can't find the resource in the image file, but in fact the function "LoadMenu" works well at the beginnig. The question is that it doesn't work after many openning and closing document operation. Does this problem due to resource leakage?

Any body can help me!

YunYan2-Sep-04 2:49

YunYan

2-Sep-04 2:49

Waiting for your help!Thanks!

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