C / C++ / MFC Discussion Boards

Re: Problem with ActiveX

14-Dec-01 4:20

Problem solved !
Poke tongue | ;-P

Runtime video Codec chose

12-Dec-01 6:47

I'm developing a custom application to Capture Sequences.
I'm using Videofor Windows Macro to capture sequences.
I'm istalled a matrox Marvel G450eTv.
I Need to select runTime,before capture startes, the videoCompression to use:I know that there is the capDlgVideoCompression macro....but this is not good for my application.I need to select video Compression Through a different method such as special functions or silmilar solutions.
anybody know how can I do this???
thanks
DIEGO

Re: Runtime video Codec chose

Un114-Apr-02 4:22

Un1

14-Apr-02 4:22

Select codec by it's name in silence:

VidCap1.Compressor = "h263"

http://www.banasoft.net/AVPhone.htm

Cool | :cool:

How to tell it's a text file or a rich text file in CRichEditView?

davilism12-Dec-01 6:31

davilism

12-Dec-01 6:31

Hi, all, I want to read text files for processing in my CRichEditView text editor. If I don't set the attribute m_bRTF to FALSE when loading, it can't read other text files besides my own. How to test for other text files?

Re: How to tell it's a text file or a rich text file in CRichEditView?

Bill Wilson12-Dec-01 12:43

Bill Wilson

12-Dec-01 12:43

rtf files are, of course, text files. There is nothing absolutely definitive. There are some 99.9999% tests you can use.

Here is a sample of an rtf file. (it contains a string of 10 "a" characters. you could check for some of the first chars maybe "{\rtf" would be specific enough and yet general enough for all versions. I don't know if there are files with {\rft0 or {\rtf2.

{\rtf1\ansi\ansicpg1252\uc1 \deff0\deflang1033\deflangfe1033{\fonttbl{\f0\froman\fcharset0\fprq2{\*\panose 02020603050405020304}Times New Roman{\*\falt Times};}{\f55\froman\fcharset238\fprq2 Times New Roman CE{\*\falt Times};}
{\f56\froman\fcharset204\fprq2 Times New Roman Cyr{\*\falt Times};}{\f58\froman\fcharset161\fprq2 Times New Roman Greek{\*\falt Times};}{\f59\froman\fcharset162\fprq2 Times New Roman Tur{\*\falt Times};}
{\f60\froman\fcharset186\fprq2 Times New Roman Baltic{\*\falt Times};}}{\colortbl;\red0\green0\blue0;\red0\green0\blue255;\red0\green255\blue255;\red0\green255\blue0;\red255\green0\blue255;\red255\green0\blue0;\red255\green255\blue0;
\red255\green255\blue255;\red0\green0\blue128;\red0\green128\blue128;\red0\green128\blue0;\red128\green0\blue128;\red128\green0\blue0;\red128\green128\blue0;\red128\green128\blue128;\red192\green192\blue192;}{\stylesheet{
\nowidctlpar\widctlpar\adjustright \fs20\cgrid \snext0 Normal;}{\*\cs10 \additive Default Paragraph Font;}}{\info{\title sfdsdfsdsdfsdff}{\author WilsonB5}{\operator WilsonB5}{\creatim\yr2001\mo12\dy12\hr15\min41}{\revtim\yr2001\mo12\dy12\hr15\min42}
{\version2}{\edmins0}{\nofpages1}{\nofwords0}{\nofchars0}{\*\company  }{\nofcharsws0}{\vern71}}\widowctrl\ftnbj\aenddoc\formshade\viewkind4\viewscale110\pgbrdrhead\pgbrdrfoot \fet0\sectd \linex0\endnhere\sectdefaultcl {\*\pnseclvl1
\pnucrm\pnstart1\pnindent720\pnhang{\pntxta .}}{\*\pnseclvl2\pnucltr\pnstart1\pnindent720\pnhang{\pntxta .}}{\*\pnseclvl3\pndec\pnstart1\pnindent720\pnhang{\pntxta .}}{\*\pnseclvl4\pnlcltr\pnstart1\pnindent720\pnhang{\pntxta )}}{\*\pnseclvl5
\pndec\pnstart1\pnindent720\pnhang{\pntxtb (}{\pntxta )}}{\*\pnseclvl6\pnlcltr\pnstart1\pnindent720\pnhang{\pntxtb (}{\pntxta )}}{\*\pnseclvl7\pnlcrm\pnstart1\pnindent720\pnhang{\pntxtb (}{\pntxta )}}{\*\pnseclvl8\pnlcltr\pnstart1\pnindent720\pnhang
{\pntxtb (}{\pntxta )}}{\*\pnseclvl9\pnlcrm\pnstart1\pnindent720\pnhang{\pntxtb (}{\pntxta )}}\pard\plain \nowidctlpar\widctlpar\adjustright \fs20\cgrid {aaaaaaaaaa
\par }}

Hope this helps,
Bill

Insert property page after pr.-Sheet created?

Thomas Blenkers12-Dec-01 6:25

Thomas Blenkers

12-Dec-01 6:25

Hi folks,

my newest, coolest Smile | :)

app uses a property sheet to expose some settings. Due to an action in one page (or s.th. like apply button in the sheet itself) I'd like to insert/remove an other property page.

I'd be good also if there is some way to hide (and display) a property page ...

Thanks for your help!
Thomas

Re: Insert property page after pr.-Sheet created?

Joaquín M López Muñoz12-Dec-01 6:37

Joaquín M López Muñoz

12-Dec-01 6:37

Well, if the property sheet inserted/removed is always the last one, you can get by using AddPage and RemovePage, but I guess you had already figured that out...

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Insert property page after pr.-Sheet created?

Thomas Blenkers12-Dec-01 10:29

Thomas Blenkers

12-Dec-01 10:29

Joaquin,

thank your for your quick suggestion Rose | [Rose]

. The page in question *is* the last one on the sheet, but it won't work:

CMyPropertySheet::OnSomeMessage(......)
{
RemovePage(&m_myPage);
AddPage(&m_myPage);
}

The RemoveMessage function destroys the property page, and AddPage isn't enough to have the page created: I get an empty property sheet, all controls on it are not visible/created Cry | :((

Re: Insert property page after pr.-Sheet created?

Joaquín M López Muñoz12-Dec-01 11:42

Joaquín M López Muñoz

12-Dec-01 11:42

mumble mumble... Maybe you should use a fresh CPropertyPage each time, like this:

CMyPropertySheet::OnSomeMessage(......)
{
  // Now m_pMyPage is a pointer to CMyPropertyPage instead of a CMyPropertyPage
  RemovePage(m_pMyPage);
  delete m_pMyPage;
  m_pMyPage=new CMyPropertyPage();
  AddPage(m_pMyPage);
}

Why don't you try this and tell us if it works? Smile | :)

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Insert property page after pr.-Sheet created?

Thomas Blenkers14-Dec-01 1:31

Thomas Blenkers

14-Dec-01 1:31

Joaquín,

thank you, that was the right trick. Once the property page has been created (OnInitDialog is done) you cannot RemovePage it and reuse the same object instance.
Thomas

Reading and writing a open CFile with fread fwrite,...?

Patrick Hoffmann12-Dec-01 6:20

Patrick Hoffmann

12-Dec-01 6:20

Hi folx!

I have a huge problem: On the one hand I have a open CFile object and on the other hand I have a library that decodes data from and encodes data into files with fread/fwrite aso.

So for a short example the following code fragment should be enough to imagine this...

CFile file("FileName",CFile::modeRead);

FILE *stream = ... // <- what do I have to write to convert a CFile into a FILE* ???

fread( buffer, size, count, stream );

.
.

Same in writeing a file!

I would be very lucky, if someone has an idea, what I can do! Big Grin | :-D

(Best Regards,)

Patrick Hoffmann

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Re: Reading and writing a open CFile with fread fwrite,...?

Joaquín M López Muñoz12-Dec-01 6:29

Joaquín M López Muñoz

12-Dec-01 6:29

Check Joseph M. Newcomer's article A Handy Guide To Handling Handles.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Command Line (cin) Hiding & Counter Using C++

valikac12-Dec-01 6:13

valikac

12-Dec-01 6:13

Hi.

I was wondering how to:

1) hide what a user types, but still read the keys.

I am working on a program that is involves password protection. I need a way to asks for the pass, but not display it openly just when logging onto any OS. A good example is logging onto linux. It asks for the password, but it does not display what the user enters.

2) code a counter that uses the clock as a seed.

For example let say this is the code:

cout << "testing";
cout << "1 ";
------------------3 second delay
cout << "2 ";
------------------3 second delay
cout << "3 ";

In other word, is there a way to code some type of delay or counter?

Thanks,
Kuphryn

Re: Command Line (cin) Hiding & Counter Using C++

Joaquín M López Muñoz12-Dec-01 6:24

Joaquín M López Muñoz

12-Dec-01 6:24

1) Check this thread on CodeProject from some weeks ago, which discusses the subject.

2) I don't quite get your question. If you want to insert delays among outputs to cout, you can simply write:

cout<<"1 "<<flush;
Sleep(3000);
cout<<"2 "<<flush;
Sleep(3000);
cout<<"3"<<flush;

but I guess you're looking for something else.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

CreateProcess that wont return until program ends

12-Dec-01 5:44

How can I execute a file programatically, and not continue until it has returned (i.e. the program ends)?

Thank you,

Russell McCurly
Hobbiest Programmer

Re: CreateProcess that wont return until program ends

Joaquín M López Muñoz12-Dec-01 6:10

Joaquín M López Muñoz

12-Dec-01 6:10

Do a WaitForSingleObject() on the hProcess handle returned by CreateProcess() inside the PROCESS_INFORMATION structure.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: CreateProcess that wont return until program ends

Alvaro Mendez12-Dec-01 6:11

Alvaro Mendez

12-Dec-01 6:11

If I remember correctly, you take the process handle returned by CreateProcess and use it to call WaitForSingleObject, which will wait until the process ends or a certain amount of time has elapsed.

Regards,
Alvaro

Re: CreateProcess that wont return until program ends

Ernest Laurentin12-Dec-01 6:18

Ernest Laurentin

12-Dec-01 6:18

I am sure you know the answer but you were too quick to send a message.
Here's the answer:
When you call CreateProcess, use PROCESS_INFORMATION
to have the handle of process or thread and call WaitForSingleObject.
on the process (or thread if you want).

Thank you

12-Dec-01 11:12

Thank you all three of you, that helped me.

Cheers,

Russell McCurly
Hobbiest Programmer

Win32 Bitmap Buttons

Mike Doner12-Dec-01 5:35

Mike Doner

12-Dec-01 5:35

Hello Folks!

I have a button on a dialog to which I want to add a bitmap to. I have no problems doing this by calling this code:

hbit = (HBITMAP) LoadBitmap ( hinst, MAKEINTRESOURCE ( IDB_ASSET ) );
SendDlgItemMessage ( hwnd, ASSET_BUTTON, BM_SETIMAGE, (WPARAM) IMAGE_BITMAP, LPARAM) hbit );

Is there anyway to setup a transparency mask on this bitmap such that the background color will be the same color as the dialog itself?

I myself have a color scheme on my desktop, and the bitmap button looks horrible, you see the grey background.

Any thoughts? I know you can do this on imagelists and stuff...

Mike.
doner@obtain.com
Laugh | :laugh:

Re: Win32 Bitmap Buttons

Joaquín M López Muñoz12-Dec-01 6:16

Joaquín M López Muñoz

12-Dec-01 6:16

You might want to consider using Davide Calabro's CButtonST class, which seems to have almost everything anyone has ever dreamt about button controls.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Win32 Bitmap Buttons

Tim Deveaux12-Dec-01 8:40

Tim Deveaux

12-Dec-01 8:40

If you override OnCtlColor you can return a NULL_BRUSH for that button when its being drawn. Might help...

    // excuse sloppy code
HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor);

CBrush br;
if(pWnd->GetDlgCtrlID() == IDC_MYBUTTON) {
    br.CreateStockObject(NULL_BRUSH);
    return br;
    }

    // yadayadayada...

later...
Actually, now that I think of it you still have the transparency prob - (I do this for icons on buttons) - guess your best bet is ::LoadImage instead of LoadBitmap...

Re: Win32 Bitmap Buttons

Christian Graus12-Dec-01 10:24

Christian Graus

12-Dec-01 10:24

If I read you correctly, you're not using MFC, right ? The way to do this is to make the buttons ownerdrawn, then in the dialog class, in your message loop, handle WM_DRAWITEM. You will need to generate your transparency mask yourself, my article on www.wdj.com ( in the Sep 2001 issue ) shows how to do this.

If your transparent area is always on the edges, you could also use ExtFloodFill on the top left pixel, a much easier solution. You could also do this to the bitmap before passing it to the button, which saves you drawing it yourself.

Christian

After all, there's nothing wrong with an elite as long as I'm allowed to be part of it!! - Mike Burston Oct 23, 2001

Sonork ID 100.10002:MeanManOzI live in Bob's HungOut now

Re: Win32 Bitmap Buttons

PJ Arends12-Dec-01 12:48

PJ Arends

12-Dec-01 12:48

Try loading the bitmap using the LoadImage() function.

hbit = (HBITMAP)LoadImage(hinst, MAKEINTRESOURCE(IDB_ASSET), IMAGE_BITMAP, 0, 0, LR_LOADTRANSPARENT | LR_LOADMAP3DCOLORS);

see LoadImage() in MSDN for more information.

---
It may be that your sole purpose in life is simply to serve as a warning to others.

networking & sending files

12-Dec-01 4:45

Hi,

i would like to build a small program (to get into networking) that sends a
file to a server program and the server program should store the file locally.
You should then be able to download it again or another file that is on the server.
Now, i have worked with sockets before but only in a simple chat server/client program. How does one send a file over a socket? Do you cut the file in pieces and then send the pieces (in a loop) or is there a way to send the files in 1 time? (i can't see how) I have seen articles that talk about streaming an object. This sounds interesting as i mainly use an O.O. design. Any small samples around that show this kind of stuff?

Thanks,
BK

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