C / C++ / MFC Discussion Boards

Nishad S9-Nov-05 20:09

9-Nov-05 20:09

Hi,

Can we send WM_ messages to a window in another desktop createted by CreateDesktop() (if the window handle is with us)?

Thank you.

- NS -

Re: SendMessage

Johann Gerell9-Nov-05 20:35

Johann Gerell

9-Nov-05 20:35

Try it out - I guess it'll take about 2 minutes.

--
The Blog: Bits and Pieces

Re: SendMessage

James R. Twine10-Nov-05 8:26

James R. Twine

10-Nov-05 8:26

I do not think that this is possible. Maybe... It might be possible to use SetThreadDesktop to switch a thread into the target desktop and then have it send the message?

Peace!

-=- James

If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Tip for new SUV drivers: Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
DeleteFXPFiles & CheckFavorites (Please rate this post!)

Is there any retstrictions to make an exe as Service

snprani9-Nov-05 19:31

snprani

9-Nov-05 19:31

HI
I have got one doubt. Is there any retstrictions to make an exe as Service.
I want to make my Server application exe as Service. That Server application is Dialog based application and it is for Client-server communication. when i am creating Service for this Exe it is creating Service and able to see that service name in Services of Administrative tools.

But unable to start it. it is giving error as 1053 : Service didnot respond to the start or control request in timely fashion.

Help me.
Thanks in Advance

Re: Is there any retstrictions to make an exe as Service

Calc209-Nov-05 20:37

Calc20

9-Nov-05 20:37

How did you create the service? Did you simplly register it?

Re: Is there any retstrictions to make an exe as Service

Calc209-Nov-05 20:37

Calc20

9-Nov-05 20:37

How did you create the service? Did you simplly register it? Have you modified in any way your dialog based server?

Re: Is there any retstrictions to make an exe as Service

Bob Stanneveld9-Nov-05 22:38

Bob Stanneveld

9-Nov-05 22:38

Hello,

You mean that you want to convert your dialog based application to be a service? So you have dialogs in you service? If this is the case, don't do it! The reason for this is that services should be able to run without the windows shell. You are restricted to kernel API's mostly. This is because this type of application is able run without any users logged on to the machine. If you use shell API's, your service might crash since those DLL's are not loaded.

Behind every great black man...
... is the police. - Conspiracy brother

Blog[^]

Plz. help.............

NityaKakkar9-Nov-05 19:16

NityaKakkar

9-Nov-05 19:16

Hi,

I am working on Microsoft Visual Studio .NET 2003 VC++. I have created a solution & i am trying Confused | :confused:

too build it & i am facing the following error:

LINK : warning LNK4001: no object files specified; libraries used
libcmtd.lib(crt0.obj) : error LNK2019: unresolved external symbol _main referenced in function _mainCRTStartup
Debug/MP1G.exe : fatal error LNK1120: 1 unresolved externals

When this error came i went to the properties in linker\system i changed the subsytem from Console (/SUBSYSTEM:CONSOLE) to Windows (/SUBSYSTEM:WINDOWS)
& in the advanced tab changed the entry point from mainCRTStartup to wWinMainCRTStartup.

But then the following error is coming:

LINK : warning LNK4001: no object files specified; libraries used
ibcmtd.lib(wwincrt0.obj) : error LNK2019: unresolved external symbol _wWinMain@16 referenced in function _wWinMainCRTStartup
Debug/MP1G.exe : fatal error LNK1120: 1 unresolved externals

How to solve this problem as fast as possible.

Thanks in advance Smile | :)

Re: Plz. help.............

ThatsAlok9-Nov-05 21:46

ThatsAlok

9-Nov-05 21:46

NityaKakkar wrote:
How to solve this problem as fast as possible.

Create a new Windows based Project!, fastest way to solve this problem

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Re: Plz. help.............

John R. Shaw9-Nov-05 21:56

John R. Shaw

9-Nov-05 21:56

I am not using .NET, but it sounds like you not have a main function your console application. If it is a console application then swhiching to it to a windows application will naturely generate more errors.

INTP
Every thing is relative...

unable to include stdafx.h file(in simple win32 DLL)

QuickDeveloper9-Nov-05 19:04

QuickDeveloper

9-Nov-05 19:04

hi
i am creating a simple Win32 DLL on VS6.
The code is taken from one of the codeproject articles.

http://codeproject.com/dll/dll.asp[^]

when i compile i get the error

fatal error C1083: Cannot open include file: 'stdafx.h': No such file or directory

I have even copied the stdafx.h file into the current directory but with no success.

In my settings i used "Not Using MFC" since it's win32 application.

Any kind of help is appreciated

-- modified at 1:12 Thursday 10th November, 2005

Re: unable to include stdafx.h file(in simple win32 DLL)

Nibu babu thomas9-Nov-05 19:26

Nibu babu thomas

9-Nov-05 19:26

Try right clicking on the line and there in the menu that pops up there will be an option to open the stdafx.h file. Try using that. If it fails then the header is not found.

Note: You must click on the line #include "stdafx.h"

Try this too.

You must use the include like this #include "stdafx.h" instead of
#include <stdafx.h>

Nibu thomas.
Software Developer.

Re: unable to include stdafx.h file(in simple win32 DLL)

QuickDeveloper9-Nov-05 19:31

QuickDeveloper

9-Nov-05 19:31

Hi
I right clicked on that line but it was unable to find the file.

I think stdafx.h file is included only in MFC-based applications.

is there any alternative for it in Win32??

Re: unable to include stdafx.h file(in simple win32 DLL)

Nibu babu thomas9-Nov-05 20:54

Nibu babu thomas

9-Nov-05 20:54

stdafx is not a standard header file.

It is just included into your project by default.

Normally it acts as a container for other header files.

Like afxwin.h, afxext.h, afxcmn.h, etc.

So that they can be placed together at one place.

You will find a corresponding stdafx.cpp file too having just this single line of code

#include "stdafx.h"

Non-MFC applications won't be having them. Since they use SDK. Smile | :)

Nibu thomas.
Software Developer.

Re: unable to include stdafx.h file(in simple win32 DLL)

James R. Twine10-Nov-05 8:18

James R. Twine

10-Nov-05 8:18

   N.B. The stdafx.h and stdafx.cpp files are the default files used for precompiled (preprocessed) headers. They are used to improve build times when used correctly. If used incorrectly, they can cause you no end of heartache. Anyway, they have nothing to do with MFC projects...

   If you right-clicked on the #include line for the file and still could not open it that way, it means that it is likely missing or in a different location than the one you expect.

   Peace!

-=- James

Re: unable to include stdafx.h file(in simple win32 DLL)

S Douglas9-Nov-05 21:18

S Douglas

9-Nov-05 21:18

vamshin wrote:
fatal error C1083: Cannot open include file: 'stdafx.h': No such file or directory

If you have placed the stdafx.h file in the same directory as the project and you’re still getting those errors. Try a rebuild all.

vamshin wrote:
In my settings i used "Not Using MFC" since it's win32 application.

stdafx.h is used for precompiled headers. See Precompiled Header Files[^]

DEBUGGING : Removing the needles from the haystack.

virtual printer port programming

Roj9-Nov-05 18:46

Roj

9-Nov-05 18:46

I need to use a virtual parallel port through a usb to parallel port cable and I am not sure how to do this. When I send the port name USB002 to WriteFile, it says the port does not exist.

Roger

Re: virtual printer port programming

Mathieu Dijkstra9-Nov-05 23:44

Mathieu Dijkstra

9-Nov-05 23:44

this is the visual c++6 version i don't know if there arre other ways to do it im a biginer in this stuf.
(you dont have to program to the printer imediatley windows dos do that 4 u)
selekt mdf
if you folow the apwizard and you make in step4 a tag (V) option Printig and printing preview.

then in function:
void CPrint1View::OnBeginPrinting(CDC*pDC,CPrintInfo* pInfo)
{
CPrint1Doc* pDoc = GetDocument();
ASSERT_VALID(pPoc);

int PageHeight = pDC->GetDeviceCaps(VERTRES);
int logPixelsY = pDC->GetDeviceCaps(LOGPIXELSY);
int rechtHeight = (int)(2.2*logPixelsY);
int numPages = pDoc->m_numRects * Rects * rectHeight / pageHeight +1;// this calculates how manny pages there arre

pInfo->SetMaxPage(numPages);
}

MFC functions

best is that you look at chapter 6 in
this source file frome book : Special Edition Using Visual C++ 6

go down the page and klik on More Information
in the red standing Source Code

http://www.quepublishing.com/bookstore/product.asp?isbn=0789715392&rl=1#[^]

or simpel klik here to get chapters1 to 11: http://www.quepublishing.com/content/images/0789715392/sourcecode/ch01to11.exe[^]

normal way there is no need to program a total printer comunication windows dos that 4 u!!!!

i hope that you wil see the licht of Vc++ (im siting to stil in the dark)
but every step is one step on step near the big licht of Vc++ Big Grin | :-D

-- modified at 5:45 Thursday 10th November, 2005

Re: virtual printer port programming

Roj10-Nov-05 5:29

Roj

10-Nov-05 5:29

Well, I will try this, but I doubt that it will work. I need to send a file which includes printer setup codes and graphics codes (DOS format) that the barcode printer needs to print. I am not printing an image as I believe most windows printing is done. I need to send the file directly to the printer. I am able to do that with the printer driver and it prints fine, but I am not sure how to get access to that function of the driver in code.

Roger

How to print data from a View

vikas amin9-Nov-05 18:43

vikas amin

9-Nov-05 18:43

I have a view class from which i want to print
the data , everthing is working fine but the data
is too much to fit in one page of A4 size is there
any technique to set the page in the printout .

Vikas Amin
Embin Technology
Bombay
vikas.amin@embin.com

Re: How to print data from a View

vikas amin9-Nov-05 23:26

vikas amin

9-Nov-05 23:26

Look vikas u ask very tough qestions
pls find some real Gurus Cool | :cool:

Vikas Amin
Embin Technology
Bombay
vikas.amin@embin.com

Re: How to print data from a View

Mathieu Dijkstra10-Nov-05 0:22

Mathieu Dijkstra

10-Nov-05 0:22

is the same question as in other topick in formum 1 step up here
like:
virtual printer port programming

one step up
is the anser to the question
a copy of the text in this:
this is the visual c++6 version i don't know if there arre other ways to do it im a biginer in this stuf.
(you dont have to program to the printer imediatley windows dos do that 4 u)
selekt mdf
if you folow the apwizard and you make in step4 a tag (V) option Printig and printing preview.

then in function:

void CPrint1View::OnBeginPrinting(CDC*pDC,CPrintInfo* pInfo)<br />
{<br />
CPrint1Doc* pDoc = GetDocument();<br />
ASSERT_VALID(pPoc);<br />
<br />
int PageHeight = pDC->GetDeviceCaps(VERTRES);<br />
int logPixelsY = pDC->GetDeviceCaps(LOGPIXELSY);<br />
int rechtHeight = (int)(2.2*logPixelsY);<br />
int numPages = pDoc->m_numRects * Rects * rectHeight / pageHeight +1;// this calculates how manny pages there arre<br />
<br />
pInfo->SetMaxPage(numPages);<br />
}

MFC functions

best is that you look at chapter 6 in
this source file frome book : Special Edition Using Visual C++ 6

go down the page and klik on More Information
in the red standing Source Code

http://www.quepublishing.com/bookstore/product.asp?isbn=0789715392&rl=1#[^]

or simpel klik here to get chapters1 to 11: http://www.quepublishing.com/content/images/0789715392/sourcecode/ch01to11.exe[^]
normal way there is no need to program a total printer comunication windows dos that 4 u!!!!

i hope that you wil see the licht of Vc++ (im siting to stil in the dark)
but every step is one step on step near the big licht of Vc++ Blush | :O

Is child frame present

Arrun9-Nov-05 18:20

Arrun

9-Nov-05 18:20

How to check whether a child frame is opened or not from CMainFrame class
I want to display a message while closing the main frame if any child frame is opened.
I used "GetActiveView()->GetDocument()" but it throws an assertion failure error.

Re: Is child frame present

*Dreamz9-Nov-05 21:22

*Dreamz

9-Nov-05 21:22

Try MDIGetActive()...
The function will give you the pointer to the active window...
If none present, then NULL....

How to return a CByteArray from the member function to the main program

LaHaHa9-Nov-05 18:07

LaHaHa

9-Nov-05 18:07

I would like to know how to return a CByteArray from the member function to the main program? I got an error in doing this!
Please help!

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