Re: help - C / C++ / MFC Discussion Boards

Re: help

stammer3-Apr-05 13:53

stammer

3-Apr-05 13:53

please recommend some books related to this subject for reference.thanks!

Re: help

Christian Graus2-Apr-05 10:35

Christian Graus

2-Apr-05 10:35

Your BACHELOR degree, and you're a BEGINNER ? That restores my faith in the future.

As has been said, if you can't do your own work, you don't deserve your degree.

Christian

I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer

Re: help

stammer2-Apr-05 14:14

stammer

2-Apr-05 14:14

bachelor degree and a beginner,that's not so funny,as I major in optics,not computer science

Re: help

Christian Graus3-Apr-05 12:51

Christian Graus

3-Apr-05 12:51

OK - in that case, one has to ask why you've been asked to write a magic wand tool in C++.

As I understand it, the magic wand is useless by itself ( according to the explanation I've just been given ), it marks an area on which other filters are applied. If I was going to impliment a magic wand, I reckon I'd make a mask bitmap, make it all white, and make the area that is drawn on the main image a black area on the bitmap. Then whatever filters, etc. I applied, I'd iterate through the rectangle that the bounds of that drawn area was contained in, and check for black pixels before processing pixels on the main image.

Christian

I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer

Re: help

stammer3-Apr-05 14:12

stammer

3-Apr-05 14:12

good idea!but it is only suitable for monochrom image.I reckon I could make the selection according to the RBG value of each pixel.the problem is how to make the scroll boundary indicating the selection.

Re: help

Christian Graus3-Apr-05 14:16

Christian Graus

3-Apr-05 14:16

stammer wrote:
but it is only suitable for monochrom image.

No, it's not. The MASK is 1 bit, the image doesn't have to be.

stammer wrote:
the problem is how to make the scroll boundary indicating the selection.

I'm not sure what you mean ? To draw the selected area ? You build a path object as you drag the mouse and then draw it.

Christian

I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer

Re: help

stammer3-Apr-05 14:40

stammer

3-Apr-05 14:40

I mean how to draw the boundary of the selection

Re: help

Christian Graus3-Apr-05 15:26

Christian Graus

3-Apr-05 15:26

Yeah, that's what I meant as well Smile | :)

The only way to know where the boundary is, is to store the mouse position, every time the mouse moves during selection. If you store those values into an array, there are methods you can call in order to turn those points into a line, which is exactly what you need.

Christian

I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer

Re: help

FlyingTinman4-Apr-05 12:41

FlyingTinman

4-Apr-05 12:41

Assuming you have successfully implemented the "magic wand" selection part (i.e. you know which pixels in the bitmap match your selection criteria and sensitivity) you could build a temporary 1 bit monochrome bitmap with all "selected" pixels of value 1 and all unselected pixels of value 0 then run an edge detection algorithm on it and trace the edge onto your original bitmap (or onto a transparent layer above it)

Steve T

delayus in VC++

binh.pham1-Apr-05 20:09

binh.pham

1-Apr-05 20:09

Hi All,
I'm doing on a project that requires to write the function delay for exact every us.
Please, help me!
Regards.

Grenouille

Re: delayus in VC++

ThatsAlok1-Apr-05 21:43

ThatsAlok

1-Apr-05 21:43

Try Sleep(..) and SleepEx(...) apis

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Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

Need info about CxImage How to download it???

awasthy1-Apr-05 16:52

awasthy

1-Apr-05 16:52

Hi All,

I need to know how to download CxImage class. I came across this only today, so you can guess I am a new programmer. Please tell me where to get this class from. The link provided in this FAQ opened thi class but I couldn't download the complete class.

Please help.

Awasthy

Re: Need info about CxImage How to download it???

ThatsAlok1-Apr-05 18:10

ThatsAlok

1-Apr-05 18:10

you can download CXImage from here
http://www.codeproject.com/bitmap/cximage.asp[^]

[Vote One Here, Complete my Survey....]

Alok Gupta
visit me at http://www.thisisalok.tk

"I ~~Think~~ Believe this Will Help"

Re: Need info about CxImage How to download it???

Ted Ferenc1-Apr-05 20:29

Ted Ferenc

1-Apr-05 20:29

I don't think he is active here any more try his website:-

http://www.xdp.it/cximage.htm

"An education isn't how much you have committed to memory, or even how much you know. It's being able to differentiate between what you do know and what you don't." - Anatole France

Re: Need info about CxImage How to download it???

awasthy1-Apr-05 21:36

awasthy

1-Apr-05 21:36

Thank you both.

Awasthy

Any work that is worth doing is worth doing well.

Help URGENT!!! Need to display an image whose path is decided at run time.

awasthy1-Apr-05 16:15

awasthy

1-Apr-05 16:15

Hi all,

I am a new VC++ programmer. I need to acess a bmp file and read its pixels but urgently I need to know how to display an image on the screen whose path is chosen by browsing throgh the file system.

Please Help

Awasthy

Re: Help URGENT!!! Need to display an image whose path is decided at run time.

Tareq Ahmed Siraj1-Apr-05 17:47

Tareq Ahmed Siraj

1-Apr-05 17:47

Use ::LoadImage() ... look it up in MSDN. Hope this helps.

- tareq

Query:Re: Help URGENT!!! Need to display an image whose path is decided at run time.

awasthy1-Apr-05 21:40

awasthy

1-Apr-05 21:40

Hi

I have the path of the image and its handle using LoadImage() but how do I display it?

No picture is being displayed.

Awasthy

Any work worth doing is worth doing well.

Re: Query:Re: Help URGENT!!! Need to display an image whose path is decided at run time.

Tareq Ahmed Siraj1-Apr-05 22:28

Tareq Ahmed Siraj

1-Apr-05 22:28

Assuming youre using MFC ... use the following code...

HBITMAP bmp = (HBITMAP)::LoadImage(::GetModuleHandle(0), _T("Coffee.bmp"), IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);
CBitmap* pBitmap = CBitmap::FromHandle(bmp);
CPaintDC dc(this);
CDC memDc;
memDc.CreateCompatibleDC(&dc);
CBitmap* pMemBmp = memDc.SelectObject(pBitmap);
dc.BitBlt(0,0,200,200,&memDc,0,0,SRCCOPY); //put your image width,height for the 3rd and 4th param

memDc.SelectObject(pMemBmp);
::DeleteObject(bmp);

- tareq

Even with the same problems : Repaint Dialogs

HackPrince1-Apr-05 13:20

HackPrince

1-Apr-05 13:20

Hello friends, I can't to resolve this problem, I sent my questions and I can't to resolve. Please, somebody know how I have to work with the messages??? :

WS_CLIPCHILDREN and/or WS_CLIPSIBLINGS

I don't know how work that. I set with both styles (WS_CLIPCHILDREN and/or WS_CLIPSIBLINGS) but it's continuing with the gray shade

Because my problem is:
How i can to repaint my dialog or update, because I open a dialog2 over dialog1 but when I close this dialog2, the dialog1 and his controls is cover with a gray shade, Why???. Confused | :confused:

How I can to repaint the dialog???.

All my dialogs are open in form modal. The dialog1 is Child over the main Application, the dialog2 is a child opened over the dialog1 (popup)

I've saw a similar problem in this link:

http://www.codeproject.com/script/comments/forums.asp?msg=1035892&forumid=1647&XtraIDs=1647&searchkw=repaint+dialog&sd=1%2F1%2F2005&ed=4%2F1%2F2005#xx1035892xx[^]

I hope that somebody help me, Cry | :((

.

The best regards

NiponWare

Golden Rule in Programming...

NewbieStats1-Apr-05 11:09

NewbieStats

1-Apr-05 11:09

Keep it Simple Stupid...

The Famous Golden Rule in Programming... Why Stress yourself to make your Program so complex that no one cares? Dont stress your mind, get fustrated, irritated, and even alittle insane over your program. Most of the time you dont understand your problem is because you dont understand your program, Keep it Simple Stupid... Thats the most Professional Advice you will ever get when your Programming...

When you begin to get stressed, turn ur monitor off, walk away, walk down the street and think, Keep it Simple Stupid.

Enjoy! Cool | :cool: