C / C++ / MFC

CPallini11-May-09 23:53

11-May-09 23:53

Rajesh R Subramanian wrote:
*starts typing furiously into the IDE*

Men don't use IDEs. Poke tongue | ;-P

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Rajesh R Subramanian12-May-09 0:40

Rajesh R Subramanian

12-May-09 0:40

Unless of course it is Klingon's IDE. Poke tongue | ;-P

It is a crappy thing, but it's life -^ Carlo Pallini

CPallini12-May-09 0:48

12-May-09 0:48

Rajesh R Subramanian wrote:
Unless of course it is Klingon's IDE.

There is NOT such a thing, there is just...ehm.... Good Thread Hijacking!!!!!
Big Grin | :-D

I need help to make a program

krmed12-May-09 0:35

krmed

12-May-09 0:35

If the user tries to close your program from the Task Manager (Applications tab) you can catch the WM_CLOSE message and handle it there.

I'm not sure that will work from the Processes tab, however.

Good luck.

Karl - WK5M
PP-ASEL-IA (N43CS)
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Wiland123411-May-09 17:52

Wiland1234

11-May-09 17:52

im makeing a program but im haveing some issus with it
i dont know how to make (search for a word) and the program will find it form a database or something
if any one can help that would be great full

Re: I need help to make a program

Chandrasekharan P11-May-09 18:02

Chandrasekharan P

11-May-09 18:02

tell us what are the issues? and till where have you reached.

Re: I need help to make a program

CPallini11-May-09 21:29

ide channel communication

11-May-09 21:29

Wiland1234 wrote:
m makeing a program but im haveing some issus with it

Vague (be specific!).

Wiland1234 wrote:
i dont know how to make (search for a word) and the program will find it form a database or something

From a database or from 'something'? What is 'something'?
Definitely tooooo vague.
Smile | :)

Mr.S.Wolf.11-May-09 15:59

Mr.S.Wolf.

11-May-09 15:59

I am looking to send a signal to IDE channel 2

The senario.

I am branching out and looking at robotics and have a Mini ITX (GA-PCV2) running windows xp with a number of onboard systems however i am in need of additional communication means.

I am currently using the parralel port to control 8 relays (may try and improve that number with this artical) Parallel Port Pin Control Library (PaPiC)[^] however what i would like is to be able to send a signal via the IDE channels to control a further 16 relays or more if possible.

I currently only use a singal 3.5" hdd on the ide channel.

Their is two IDE ports/ plugs on the motherboard so it would be even better if i could run more the one relay control board but one thing at a time.

Any help would be appreciated and if someone feels this is on the wrong board please let me know.

Thank you in advance.

Erase text in transparent window

gcorrea11-May-09 13:10

gcorrea

11-May-09 13:10

Can anybody tell me how can I erase a text in a transparent window

Re: Erase text in transparent window

bulg11-May-09 14:07

bulg

11-May-09 14:07

Windex[^]

Re: Erase text in transparent window

Taran911-May-09 18:42

Taran9

11-May-09 18:42

Re: Erase text in transparent window

gcorrea20-May-09 7:27

gcorrea

20-May-09 7:27

Thanks everybody. I had solved my problem Wink | ;)

Displaying an image from a Firewire Camera in MFC

cheekitwong11-May-09 12:11

cheekitwong

11-May-09 12:11

Hi all.

First of all, I am new to MFC programming so thank you for your patience.

Here is my situation:
I have a Stereo camera which provides grayscale images. I can connect to the camera without any problems and I get a unsigned char pointer to the image.

I am now at the stage where I want to display this image in an MFC program. However I am very confused with how images are handled. I know how to load a bitmap image from a file and then display it but I just couldnt figure out how to display an image (referenced by a pointer) to the application. Help!

Sorry if this is a newbie question

Thank you and best regards,
Kit

Re: Displaying an image from a Firewire Camera in MFC

Jonathan Davies11-May-09 12:45

Jonathan Davies

11-May-09 12:45

You can to convert the frames received from the camera to bitmap classes or BITMAPINFO structs. for example, something like:

void CCameraView2::ProcessFrame(UINT8 *pData,UINT32,UINT8 Redraw)
{
    UINT32 BytesPerDstPix;

    // Copy frame to our bitmap
    if(m_pBitmapInfo)
    {
	BytesPerDstPix=3;
	switch(m_ColorMode)
	{
	  case CM_Y8    : memcpy(m_pImage,pData,(UINT32)m_XSize*(UINT32)m_YSize);
					  BytesPerDstPix=1;
					  break;

	  case CM_RAW8  : ConvertRawY8(m_XSize,m_YSize,pData,m_pImage,m_BayerPattern);
					  break;
  
          case CM_RGB8  : ConvertRGB(m_XSize,m_YSize,pData,m_pImage);
						  break;
        ...

Re: Displaying an image from a Firewire Camera in MFC

cheekitwong12-May-09 11:03

cheekitwong

12-May-09 11:03

Hi Jonathan

Thanks for your reply. Unfortunately I am still confused on exactly how this works.

In various examples (from various sites), I have seen the bitmap class and the BITMAPINFO structs used with images loaded from file or the resources. However, I could not find anything that uses an image (referenced by a pointed) already in the memory and somehow (either through picture control or whatever means) onto the MFC dialog GUI. Do you have any examples? Or even if you could point me into the right direction, that would be awesome!

I hope this is clear.

Thank again for your help. Really appreciate it.

Re: Displaying an image from a Firewire Camera in MFC

Jonathan Davies12-May-09 23:21

Jonathan Davies

12-May-09 23:21

Hi,
I used the following comment in one of my programs:

BITMAPINFO *m_pBitmapInfo;    // A DIB (Device Independant Bitmap) consists of two distinct
			      //parts: a BITMAPINFO structure describing the dimensions and 
                              // colors of the bitmap, and an array of bytes defining the 
                              // pixels of the bitmap

So say you have a certain type of camera, once you've set it up etc, the dimensions, the way the colours are defined, whether the image is in top-down or bottom-up format, black/white or colour, all this sort of stuff is likely to stay the same for each frame you receive from your camera.

You need this sort of information about the picture plus the actual data/bytes that make up the image.

My approach (but there may be others) sets up exactly what you would have if you'd loaded a .bmp file from disc with all the information but then combines it with the actual image data feom the camera to produce a complete bitmap or CBitmap object in MFC.

You could have a look at how the BITMAPINFO and BITMAPINFOHEADER structures are made up which might help.

Re: Displaying an image from a Firewire Camera in MFC

Jonathan Davies13-May-09 1:49

Jonathan Davies

13-May-09 1:49

Hi again,
You say you can get the data, which presumably is in some image, picture or video format, for example: perhaps it is in YUV422. Basically find or write some code that will covert between this format and the Bitmap format you're almost there. If you're into this to write some MFC code do the former. If you're aim is to only to see the pictures from your camera try the latter.

write code (vc++) in file.txt

anassamar11-May-09 9:25

anassamar

11-May-09 9:25

hi,
I want to write my code ( Vc++) in txt file then I want to compile it, how I do that?
Thank you

thank you
soso

David Crow11-May-09 9:30

David Crow

11-May-09 9:30

anassamar wrote:
I want to write my code ( Vc++) in txt file...

As opposed to what other kind of file?

anassamar wrote:
...then I want to compile it, how I do that?

My first guess would be...with a compiler.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

CPallini11-May-09 11:26

11-May-09 11:26

Cedric Moonen11-May-09 20:43

Cedric Moonen

11-May-09 20:43

DavidCrow wrote:
As opposed to what other kind of file?

A .cpp file for instance ? Roll eyes | :rolleyes:

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

bulg11-May-09 12:02

bulg

11-May-09 12:02

visual studio requires you to have a project & workspace in order to compile anything. Make a new project (it will create a workspace automatically) and then figure out how to "add a source file" to the project. Then you can compile it.

Projects & Workspaces are things that help organize different projects that a coder might otherwise just be sticking in a directory labeled, "/usr/home/mystuff/".

Cedric Moonen11-May-09 20:48

Cedric Moonen

11-May-09 20:48

anassamar wrote:
I want to write my code ( Vc++) in txt file then I want to compile it, how I do that?

What do you mean exactly ? You want to load a text file at run-time and execute the code in that file at run-time ? If yes, then C++ is not meant for that. C++ is a compiled language and you can't execute code this way. You will need to use a scripting language for that purpose instead.

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++