Re: Why dll can't be loaded - Mobile Discussion Boards

Jørgen Belfalas26-Feb-03 0:22

26-Feb-03 0:22

Hi there,

I'm working on custom designed hardware (a measuring instrument) with a printer attached to the parallel port. (Windows CE v. 2.11)

When I start printing but the printer is out of paper or off line, the system generates an error message that allows me to press 'Retry' or 'Cancel'.

If I correct the problem and press 'Retry' everything works fine, but if I press 'Cancel' the instrument is no longer able to print until after a reboot.

I can see that EndPage returns a negative value but I can't find a way to handle it.
I have tried to Detach, CreateDC and Attach again but it doesn't help.

Any help will be appreciated

Thanks in advance,
Jørgen

Re: Printing in Windows CE, 2.11

AKSIVAKUMAR26-Feb-03 22:25

AKSIVAKUMAR

26-Feb-03 22:25

Hi Jorgeon,

I am also facing the same problem.
Got the solution !
If so please let me know.

Thanks,
aks

Re: Printing in Windows CE, 2.11

AKSIVAKUMAR27-Feb-03 23:06

AKSIVAKUMAR

27-Feb-03 23:06

Hi,

Do you have any sample application for accessing the PRINTER from eVC++ program.?

If so please let me know in detail.

Thanks,
siva

Re: Printing in Windows CE, 2.11

Jørgen Belfalas28-Feb-03 1:00

Jørgen Belfalas

28-Feb-03 1:00

Hi Siva,

Basically the access to the printer in CE is the same as in Windows. You can find examples in "Programming Windows" by Charles Petzold, ISBN 1-57231-995-X and/or in "Programming Windows with MFC" by Jeff Prosise, ISBN 1-57231-695-0.

The procedure is almost like:

StartDoc()
StartPage()
.. Do your printing
EndPage()
EndDoc()

An example can be found in the online help in VCC. Search on StartPage

The problem is that these functions apparently don't return an error code on failure as they probably do in Windows? If they do - I can't see them?

If that won't help you, let me know what exactly you do need?

Regards,
Jørgen

Re: Printing in Windows CE, 2.11

AKSIVAKUMAR2-Mar-03 19:18

AKSIVAKUMAR

2-Mar-03 19:18

Hi Jørgen,

Thank you !

Yeah it seems working !

I have to find another solution..that Daniel S talks about sending AT commands via IR to the printer.I am in a position to figure out all the posiblities to talk with printer and FAX.

If you have any ideas/suggestion please let me know in detail.

Shall certainly revert back to you if any need arises..

Thanks
siva

Why dll can't be loaded

eihab Sewidan25-Feb-03 5:53

eihab Sewidan

25-Feb-03 5:53

Hi everyone:
This actually my first post and hope to be part of the group... Smile | :)

. I have created an updated 2002 .dll using evc++ and placed it in the root of 2002 ppc. for some reason the system doesn't recognize it. When I try the old one, it works. Any help regarding that? Thanks a lot.

Bob, Software Developer;

Re: Why dll can't be loaded

João Paulo Figueira25-Feb-03 6:04

João Paulo Figueira

25-Feb-03 6:04

I think the system will look first on the \Windows directory. Have you tried to put it there?

Re: Why dll can't be loaded

eihab Sewidan25-Feb-03 8:50

eihab Sewidan

25-Feb-03 8:50

Thanks a lot Joao, Yeah I did. and also I figured out the problem. it was the 'outputfile' in the project settings. before, I put it for 'x86debug' while it needed 'ARM debug'.
Tell the truth, I don't know what the difference is...!! I would like to know though. I think it depends on the cpu type of the deveice. However, if that's corrrect, how would we know which for which. JUST A FOLLOW UP THOUGHT AFTER THE BIG HEADACH I GOT FROM THIS TINY DIFFERENT SETTING.

Thanks again for your answer.

Software Developer

Re: Why dll can't be loaded

João Paulo Figueira25-Feb-03 22:16

João Paulo Figueira

25-Feb-03 22:16

You are right about the CPU type. As a matter of fact, you can produce executables for ARM (StrongARM) and the emulator. When you choose the emulator on your project setting, all the compiler's output (.obj, .dll, .exe) goes to the x86debug or x86release (or whatever they are named in your setup). Before generating any output, make sure you have selected the correct target. Wink | ;)

Don't worry too much about this mistake: from my experience everybody does that, especially when targetting multiple platforms, or when transitioning from the debug to the shipping version of the product (it happended to me just yesterday).
Regards,
João

pocket pc & systeminformation

dasweasel24-Feb-03 22:27

dasweasel

24-Feb-03 22:27

hi,
i'm looking for a possebility to read the serial-no. form a IPAQ pocket pc with a evc++ program and send this information to the serial device or ethernet. does anybody knows were to find this information and how to read it.

best regards

DasWeasel

Re: pocket pc & systeminformation

João Paulo Figueira24-Feb-03 23:35

João Paulo Figueira

24-Feb-03 23:35

Check this out: http://www.pocketpcdn.com/qa/serial_number2002.html[^]

Re: pocket pc & systeminformation

dasweasel25-Feb-03 0:02

dasweasel

25-Feb-03 0:02

hi,

this looks good. i'll try it out...thanx in advance!

DasWeasel

Pocket PC Emulator for Win98

Anonymous24-Feb-03 5:08

Anonymous

24-Feb-03 5:08

I am still using Windows 98. I know that eVC++ will work with Windows 98. Is the an emulator that will work?

Thanks

Re: Pocket PC Emulator for Win98

João Paulo Figueira24-Feb-03 5:20

João Paulo Figueira

24-Feb-03 5:20

Heed these words of caution, from someone already charred by tough experience: don't think about it! The emulator is not very stable in Windows 2000, so don't expect it to work on the nimble 98... My experience with the emulator on an updated W2K is one of sudden and unexpected reboots, not even blue screens!
Beware of the wild emulator!

Trasparent CBrush

\SOLMAN24-Feb-03 3:47

\SOLMAN

24-Feb-03 3:47

Hi out there,
I'm looking for a way to create a transparent CBrush under WinCE so I can draw a polygon filled with lines. The background of the polygon have to be visible. I tried some things but nothing I've tried had a transparent background.

Thanx for help

\SOLMAN

Re: Trasparent CBrush

João Paulo Figueira24-Feb-03 4:06

João Paulo Figueira

24-Feb-03 4:06

What you need is a null brush. Use this:

LOGBRUSH	logBrush;
CBrush		nullBrush;
CBrush*		pOldBrush;

logBrush.lbStyle = BS_NULL;
if(nullBrush.CreateBrushIndirect(&logBrush))
{
	pOldBrush = dc.SelectObject(&nullBrush);
	//
	// Do your drawing here
	//
	dc.SelectObject(pOldBrush);
}

Enjoy!

Re: Trasparent CBrush

\SOLMAN24-Feb-03 4:13

\SOLMAN

24-Feb-03 4:13

Isn't this a polygon with no filling?? I need somthimg like:

+-----------------+
|/////////////////|
|/////////////////|
|/////////////////|
+-----------------+

The square is the polygon and the lines are the fillings (my english isn't the best)

Re: Trasparent CBrush

João Paulo Figueira24-Feb-03 4:24

João Paulo Figueira

24-Feb-03 4:24

Sorry!

I think I did not understand your question. Is that a hatched brush? Maybe you need CBrush::CreateDIBPatternBrush. Take a look in the documentation, they have a sample (I've never used it...)

Re: Trasparent CBrush

\SOLMAN24-Feb-03 22:57

\SOLMAN

24-Feb-03 22:57

All right. Let me tell you what tried so far.

I want to draw a bitmap on the screen of the device and mark an area in the bitmap. Let's say the user loads an image with a building in the front and some surrounding things. And now I draw a polygon with the shape of the building. But I like the building to stay visible. I thought of a polygon with a transparent hatched filling. In this way the area is marked but I can still see the background.

I looked in the MS help for the LOGBRUSH structure. They write of many brush styles. e.g. BS_HATCHED but when I use this define the error message "error C2065: 'BS_HATCHED' : undeclared identifier" is displayed while compiling. So I looked into WINGDI.h and found only the following brush styles

#define BS_SOLID 0
#define BS_NULL 1
#define BS_HOLLOW BS_NULL
#define BS_DIBPATTERNPT 6

The only way to create a transparent hatched brush is to work with BS_DIBPATTERNPT but there is the next problem. How can I create a transparent DIB. I'm relativly new to Windows progamming.

Greetings
\SOLMAN

Re: Trasparent CBrush

João Paulo Figueira25-Feb-03 0:59

João Paulo Figueira

25-Feb-03 0:59

I'm a bit in the cold with that issue. Maybe you want to take a look at the bitmaps section here in CP.
Good luck!

Beginner with eVC++

jakethefake21-Feb-03 8:45

jakethefake

21-Feb-03 8:45

Can anyone recommend "friendly" books for newbies to eVC++?

Re: Beginner with eVC++

TigerNinja_21-Feb-03 11:33

TigerNinja_

21-Feb-03 11:33

I don't know of any books, however, d/l either eVC++ 3.0/4.0 from msdn and the documentation with it will get you well on your way. There are also many examples in the SDK, depending on what platform your developing on.

Also, depending on what you chose to program with, ie. MFC,WIN32, you can still get a book that isn't necessarily for embedded, but Windows itself. Like Programming Windows MFC - J.Prosise helps me learn MFC, which helps me program eVC++4.0 with MFC.

Alot, maybe 90% of Windows programming can apply to embedded Windows programming. Blush | :O

Good luck!

R.Bischoff | C++

.NET, Kommst du mit?

Playing MP3 files in app developed with eVC++

Anonymous20-Feb-03 13:37

Anonymous

20-Feb-03 13:37

I would like to create an application for the pocket PC (iPAQ) using eVC++ that when you start the app it plays a MP3 file for 5 mins and continues to play until it reaches the end of a current section of music. The music is in sound bits of 20 - 40 sec. When it is done playing and found the silent section, the app will close. It was suggested that I look at the Windows Media Player for Pocket PC SDK documentation. I have looked at the documentation but I need some more basic understanding how MP3 files are layed down and some palce I can read how to interface through C++. An additional bit of information: I will be creating the MP3 files from audio cassette tapes. Any suggestions will be greatly appreciated. Thanks

Re: Playing MP3 files in app developed with eVC++

TigerNinja_21-Feb-03 8:33

TigerNinja_

21-Feb-03 8:33

Did you look at DirectPlay , do a search on it with google.com.

R.Bischoff | C++

.NET, Kommst du mit?

Re: Playing MP3 files in app developed with eVC++

Anonymous23-Feb-03 13:44

Anonymous

23-Feb-03 13:44

Soliant,

Thank you for the suggestion. To be honest, I do not understand how to use a API. I will look at the documentation but can you give some additional help how I would use?

Thank you

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