its abt CClientDC().....there is a problem when i use it..... - C / C++ / MFC Discussion Boards

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Conversion from Encoded Bitstream file to any mediafile format

handle12317-Nov-04 1:46

handle123

17-Nov-04 1:46

Could any body suggest me any tool or any solution
Advncd thanks

GDI Expert Knowledge Required

Kyudos17-Nov-04 1:25

Kyudos

17-Nov-04 1:25

I am displaying a bitmap, loaded from a file, that my users can move and resize as they please. I've managed to implement transparency and flipping and mirroring. So far so good.

Now, under certain conditions (if the bitmpa is linked to another display), I'd like to highlight the bitmap by drawing a frame around it (well, actually I want to frame only the non-transparent region)). I have two problems:

1). I've tried framing the source bitmap - but every region function I've tried seems to return a rectangular region, so I end up with a rectangular frame, not a frame that outlines the non-transparent shape of the bitmap.

2). Obviously, framing the source bitmap is not what I need. But how do I get hold of the (potentially) moved and resized transparent bitmap that is actually displayed?

Thanks

Re: GDI Expert Knowledge Required

basementman17-Nov-04 5:19

basementman

17-Nov-04 5:19

Have you tried CreatePolygonRgn? This is probably what you want to use, followed by FrameRgn or FillRgn.

onwards and upwards...

Re: GDI Expert Knowledge Required

Kyudos17-Nov-04 5:30

Kyudos

17-Nov-04 5:30

Thanks for that...I managed to get by bitmap framed using FrameRgn. But I can't seem to get PtInRegion to work reliably. I alos need to know how to 'undraw' the frame when I don't want it to display...

Re: Help me : simple Edit Ctrl

dSolariuM17-Nov-04 1:02

dSolariuM

17-Nov-04 1:02

Hello, follow these steps:
1:add a class derived from CEditCtrl(and name is sth.)

2:Add a variable to your Edit control derived from
created class in step 1;

3:Now you can use WM_KEYDOWN of your class.

Wish to helps you.

how to find the process id of an open TCP connection in Win2K

Anonymous17-Nov-04 0:16

Anonymous

17-Nov-04 0:16

i would like to know how to progamatically find the process ID for an TCP connection on a WIN2K system. Windows XP uses AllocateAndGetTcpExTableFromStack() for that purpose but this function call is undefined in Win2K.

But programs like tcpview, activeport is able to find the pid in Win2K also...
Does any1 know how to do it?
Thanx in advance...

Re: how to find the process id of an open TCP connection in Win2K

Alexander ^M.,17-Nov-04 9:51

Alexander ^M.,

17-Nov-04 9:51

have a look at http://www.sysinternals.com/[^]

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

its abt CClientDC().....there is a problem when i use it.....

namaskaaram16-Nov-04 23:36

namaskaaram

16-Nov-04 23:36

i have made a dialog based program that uses the command "CClientDC dc(this);" in the OnInitDialog().....i dont seem to have problems here.....but when i use this same command in a derived class CMyStatic(derived from CStatic Class) in the constructor of CMyStatic, i get no errrors but when i execute the file i get a dialog saying.....

Debug Assertion Failed

File:wingdi.cpp
line:981
File:afxwin2.inl
line:98
File:wingdi.cpp
line:707
File:winocc.cpp
line:199
File:wingdi.cpp
line:696

sob.....

.....somebody ...anybody.....HELP!!!!!

Re: its abt CClientDC().....there is a problem when i use it.....

Antony M Kancidrowski17-Nov-04 0:05

Antony M Kancidrowski

17-Nov-04 0:05

You can not use any functions that rely on the hWnd been set within the constructor of a CWnd derived class.

If you look at the code you will see that the pWnd is set but the hWnd is NULL.

The hWnd is set as the control is created.

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 Walliams (Little Britain)

command line switches?

Keck16-Nov-04 23:26

Keck

16-Nov-04 23:26

I'm running a C program in visual C++ which uses command line switches. How do I use these as I've never used them before, and don't know how to specify either the commands or the the underlying options.
TIA

Keck

Re: command line switches?

Antony M Kancidrowski17-Nov-04 0:11

Antony M Kancidrowski

17-Nov-04 0:11

Without knowing what application you are attempting to run I doubt we will be able to help.

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 Walliams (Little Britain)

Re: command line switches?

Keck17-Nov-04 0:19

Keck

17-Nov-04 0:19

Hi - thanks for responding anyway. I think I've just made a breakthrough myself while looking for a way to explain it better.

Thank you

Keck

Re: command line switches?

handle12317-Nov-04 1:50

handle123

17-Nov-04 1:50

project->settings->debug->programarguments (might be this is wat u r looking for)

Re: command line switches?

shiraztk17-Nov-04 3:12

shiraztk

17-Nov-04 3:12

command line options can be found at

Project>Settings>C/C++

You can see the project option are set there.
For c programs use the /Tc key and for c++ programs use /Tp key.

You can get complete list of compiler options can be found in MSDN.

I believe most of these options can be set using GUI itself.

Regards

The Best Relligion is Science.
Once you understand it, you will know God.

VC++: How can i know the Document object is created or not?

hemagiriyb16-Nov-04 23:25

hemagiriyb

16-Nov-04 23:25

BOOL CDocument::OnNewDocument()
{
.............//in this place how can i know weather document object is
.............//created or not.
.............//
}

Hemagiri Y B
S/W Engg
INDIA

Re: VC++: How can i know the Document object is created or not?

John R. Shaw17-Nov-04 10:00

John R. Shaw

17-Nov-04 10:00

Both the CSingleDocTemplate and CMultiDocTemplate class contain this call:
AfxMessageBox(AFX_IDP_FAILED_TO_CREATE_DOC);
to inform the application user that it failed to create the document.

For development purposes (DEBUGING) they also produce messages in the Build results windows using:
TRACE0("CDocTemplate::CreateNewDocument returned NULL.\n");

The base CDocument::OnNewDocument() just does some intialization of existing variables. In a single document/view: this means you need to destroy any previous information your document is holding and reinitialize any needed variables. In a multiple document/view: this means you may need to initialize some data variables needed to store your data.

//Example in a very simple text ASCII editor
BOOL CMyEditDoc::OnNewDocument()
{
	if( !CDocument::OnNewDocument() )
		return FALSE;
	if( !MyInitFunction() )
        {
		// show my error message box here
		return FALSE;
	}
	return TRUE;
}

For both single and muli-doc application: The document object already exist before this member function is called, otherwize this function could not have been called ligaly. The document and the document object that holds it are 2 different things. Note: If this function fails (return FALSE) then any window created to view the data is automaticaly destroyed (the document object may also be destroyed).

A bit long winded, but I hope it helps a little.

INTP

Parse a XML from a CHttpFile object

Cris16-Nov-04 23:10

Cris

16-Nov-04 23:10

Hello,
How could i parse a XML from a CHttpFile object (response from a HTTP request)?
Which class or method can i use?

[]'
Cris

cgi

hou_12616-Nov-04 23:09

hou_126

16-Nov-04 23:09

a cgi acessing oracle which wrote by VC,HOW TO DO IT ?plese tell me about it or some source code about it .Thanks a lot !

coinstaller build - vc6 vs. vc7

calin_iaru16-Nov-04 22:33

calin_iaru

16-Nov-04 22:33

Hi,

I am trying to port a vc6 coinstaller project (basically a DLL) to vc7. It compiles and builds correctly. The difference is that the new vc7 DLL does not display the property page for a particular device. The vc6 build is doing it correctly. I have coded an exception in the CoInstallerFunc but I see that the device Manager is not calling it.

I also posted this message to some MS discussion forums and I keep getting errors like "Your Passport session has expired. You need to sign in again before you can post to this group." I sign in and no change. I delete cookies, still no change. Looked on Google without success. So how do I post a new question to an MS newsgroup when this message appears? (It's ironic that I ask a discussion board on how to post to a newsgroup, but anyway...)

access to the serial port

doneirik16-Nov-04 21:51

doneirik

16-Nov-04 21:51

Hi,
I want to access the serial port on my pc, programming with visual c++ .net under winNT.4. Can anyone suggest a good tutorial on this subject or give me a lead.

regards, donEirik

Re: access to the serial port

pubududilena16-Nov-04 23:12

pubududilena

16-Nov-04 23:12

hi you can find from here:
http://www.codeproject.com/system/#Hardware+programming[^]

Re: access to the serial port

Antony M Kancidrowski17-Nov-04 0:15

Antony M Kancidrowski

17-Nov-04 0:15

Serial communication is the same as reading and writing files. The above mensioned tutorials / examples will help you out.

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 Walliams (Little Britain)

a device driver for windows 2000

snthomas16-Nov-04 20:44

snthomas

16-Nov-04 20:44

anyone can help in creating a device driver for windows 2000.I don't know even basics of device drivers.

Re: a device driver for windows 2000

Antony M Kancidrowski17-Nov-04 0:19

Antony M Kancidrowski

17-Nov-04 0:19

Have you looked at any DDK examples?

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 Walliams (Little Britain)

Re: a device driver for windows 2000

snthomas17-Nov-04 1:13

snthomas

17-Nov-04 1:13

I don't have a ddk.where can i get it.pls advise.

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