Re: How to read Image's Pixel co-ordinates - C / C++ / MFC Discussion Boards

Re: How to use CListCtrl to handle message

Naveen10-Sep-09 22:59

10-Sep-09 22:59

Derive a class from CListCtrl and overide the WindowProc() function. All the message to the list control goes throught that function.

nave

[OpenedFileFinder] [My Blog]

Re: How to use CListCtrl to handle message

jinjiashan11-Sep-09 0:45

jinjiashan

11-Sep-09 0:45

thank you

I try to do it

Re: How to use CListCtrl to handle message

Selvam R10-Sep-09 17:47

Selvam R

10-Sep-09 17:47

CListCtrl encapsulate list view. so, we can use the list view messages

http://msdn.microsoft.com/en-us/library/cc656508%28VS.85%29.aspx[^]

Thanks and Regards,
Selvam,
http://www.wincpp.com

Re: How to use CListCtrl to handle message

Adam Roderick J10-Sep-09 18:34

Adam Roderick J

10-Sep-09 18:34

Please elaborate your question, we cannot understand until, you gave some more clue. Please refer the link to ask the correct way to get maximum answers Smile | :)

[^]

Величие не Бога может быть недооценена.

Re: How to use CListCtrl to handle message

jinjiashan10-Sep-09 20:42

jinjiashan

10-Sep-09 20:42

thanks for all friends above;

I have a class derived CListCtrl, I tend to use this class to access the item associated with this class.
so I should use which message handle? all message can't be responded,why?

class CMyList : public CListCtrl

How to read Image's Pixel co-ordinates

Game-point10-Sep-09 17:00

Game-point

10-Sep-09 17:00

Hi Folks

I have tried load image using this ...

CImage img; img.Load(_T("read.tif"));

Actully this is one full image .

but i need to cut in particular piece of that image.

image contains only two colors Black(RGB - 0 0 0) and white(RGB - 255 255 255)

i did only the load images ..but i dont know the further process what i can do??!!!!

Please help me !!!!!!!!11

Regards

~~~~~~~~~~~~~Raju~~~~~~~~~~~~~

Re: How to read Image's Pixel co-ordinates

Naveen10-Sep-09 17:28

Naveen

10-Sep-09 17:28

You can use the Draw() function of the CImage to draw only a portion of the image. That is.

1. Create a memory dc
2. create a bitmap (createcompatiblebitmap() )
3. Select the bitmap to the dc.
4. Call CImage::Draw() funcion and pass the above created DC.

Now the bitmap that you created in step 2, will be having the image you want.

nave

[OpenedFileFinder] [My Blog]

Re: How to read Image's Pixel co-ordinates

Game-point10-Sep-09 18:09

Game-point

10-Sep-09 18:09

Thanks for your replay!!!!!!

void CImageReaderDlg::OnBnClickedButtonLoad()
{
	
	CImage img;
	img.Load(_T("read.tif"));
	int nWidth=img.GetWidth();
	int nHeight=img.GetHeight();
	CClientDC dc(this);
	CString str;
	CPen ps;

	for (double i=nWidth ; i > nWidth/2 ; i--)
	{
		for (double j=nHeight;j>nHeight/2;j--)
		{
			COLORREF clr=img.GetPixel(i,j);
			//Find RGB value
			int Rvalue=GetRValue(clr);
			int Gvalue=GetGValue(clr);
			int Bvalue=GetBValue(clr);
			if(Rvalue == 255 && Gvalue == 255 && Bvalue == 255)
			{
				ps.CreatePen(PS_SOLID,i,RGB(255,0,0));
				dc.SelectObject(&ps);
				dc.MoveTo(i,j);
				dc.LineTo(i,j);
			}
		}
	}
}

its not drawing any colors in image ..what i can wrong here please suggest me !!

~~~~~~~~~~~~~Raju~~~~~~~~~~~~~

Re: How to read Image's Pixel co-ordinates

Naveen10-Sep-09 18:13

Naveen

10-Sep-09 18:13

rajugis wrote:
img.Load(_T("read.tif"));

Is the Load success? check the return value.

rajugis wrote:
ps.CreatePen(PS_SOLID,i,RGB(255,0,0)); dc.SelectObject(&ps); dc.MoveTo(i,j); dc.LineTo(i,j);

Instead of the above, use SetPixel() function.

nave

[OpenedFileFinder] [My Blog]

Re: How to read Image's Pixel co-ordinates

Game-point10-Sep-09 18:18

Game-point

10-Sep-09 18:18

yes naveen ..its success .....

~~~~~~~~~~~~~Raju~~~~~~~~~~~~~

Re: How to read Image's Pixel co-ordinates

Naveen10-Sep-09 18:19

Naveen

10-Sep-09 18:19

Any luck after using SetPixel() ?

nave

[OpenedFileFinder] [My Blog]

Re: How to read Image's Pixel co-ordinates

Game-point10-Sep-09 18:29

Game-point

10-Sep-09 18:29

i have another one prob ..

when come to the loop ...its showing debug assertion failed !!

and i dont know how to use setpixel function

please help me !!!!!!!!

~~~~~~~~~~~~~Raju~~~~~~~~~~~~~

Re: How to read Image's Pixel co-ordinates

Naveen10-Sep-09 19:11

Naveen

10-Sep-09 19:11

rajugis wrote:
when come to the loop ...its showing debug assertion failed !!

At which line? Press the retry button and see at which line assertion occured.

rajugis wrote:
and i dont know how to use setpixel function

Well check MSDN[^]

nave

[OpenedFileFinder] [My Blog]

Re: How to read Image's Pixel co-ordinates

Game-point10-Sep-09 19:40

Game-point

10-Sep-09 19:40

Hi naveen

void CCBIView::OnDraw(CDC* pDC)
{
	CCBIDoc* pDoc = GetDocument();
	ASSERT_VALID(pDoc);
	if (!pDoc)
		return;
	CImage image;
	CPen ps;
	//CClientDC dc(this);
	image.Load (_T("read.tif"));
	int w,h;
	w = image.GetWidth();
	h = image.GetHeight();
	int color;
	COLORREF clr;
	for(int i = 0 ; i < w ; i ++)
	for(int j = 0 ; j < h; j ++)
	{		
			color = image.GetPixel(i,j);
			clr=image.GetPixel(i,j);
			int Rvalue=GetRValue(clr);
			int Gvalue=GetGValue(clr);
			int Bvalue=GetBValue(clr);
			if(Rvalue == 0 && Gvalue == 0 && Bvalue == 0)
			{
				//ps.CreatePen(PS_SOLID,i,RGB(255,0,0));
				pDC ->SetPixel (i,j,color);
			}	
	//		img.SetPixel(i,j,clr);
	
	
	
	}
	// TODO: add draw code for native data here
}

now its ok but too slow ...

and how to make one vertical and horizontal line in the image ..

PLease.....

~~~~~~~~~~~~~Raju~~~~~~~~~~~~~

what will happen when i terminate a process?

iceman861610-Sep-09 14:25

iceman8616

10-Sep-09 14:25

hi everybody, what will happen when i terminate a prcocess on the windows taskmanager?
Can the process make some action before killed?

Re: what will happen when i terminate a process?

Randor 10-Sep-09 15:04

Randor

10-Sep-09 15:04

Hi iceman,

Do you have a C/C++ related question? I fail to see how your question applies to the board topic.

Best Wishes,
-David Delaune

Re: what will happen when i terminate a process?

Naveen10-Sep-09 17:23

Naveen

10-Sep-09 17:23

iceman8616 wrote:
Can the process make some action before killed?

No. The process will not get any clue when it is terminated from the taskmanager.

nave

[OpenedFileFinder] [My Blog]

Re: what will happen when i terminate a process?

Randor 10-Sep-09 17:33

Randor

10-Sep-09 17:33

Naveen wrote:
No. The process will not get any clue when it is terminated from the taskmanager.

Hi Naveen,

Are you sure about that? The task manager uses two methods of terminating an application depending on which tab is selected. One of them can be ignored by an application.

Best Wishes,
-David Delaune

Re: what will happen when i terminate a process?

Naveen10-Sep-09 17:40

Naveen

10-Sep-09 17:40

Randor wrote:
task manager uses two methods of terminating an application depending on which tab is selected.

Hi David,

I mean the "EndProcess" option in the "Process" tab of the task manager( I guess it uses TerminateProcess()). It is the "End task" option in the "Application" tab that can be igonred( which sends a WM_CLOSE message ). right? Please correct me if I am wrong.

nave

[OpenedFileFinder] [My Blog]

Re: what will happen when i terminate a process?

Randor 10-Sep-09 17:46

Randor

10-Sep-09 17:46

Yes, the 'End Task' button on the 'Application' tab simply sends a WM_CLOSE message. You can see this with the Spy++ utility. An application or malware could potentially ignore this message.

Best Wishes,
-David Delaune

Re: what will happen when i terminate a process?

Stuart Dootson10-Sep-09 20:32

Stuart Dootson

10-Sep-09 20:32

I believe so - I think the window gets a WM_CLOSE or WM_QUIT first (can't remember which) and if it doesn't die pretty quickly, it then gets terminated with TerminateProcess.

I think that's how it works, anyway.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: what will happen when i terminate a process?

kilt14-Sep-09 2:27

kilt

14-Sep-09 2:27

Simply see the Taskmgr.exe source code (C, Win32 group[^])

Matching function for the code

Waldemar Ork10-Sep-09 9:21

Waldemar Ork

10-Sep-09 9:21

Hi, Everybody,
In the code underneath the compiler says there's no matching function for
GetNextComb.I marked the place where it refuses to compile the programme. What should I do ?

#include <cstdlib>
#include "IndexCombination.h"
#include <iostream>
#include <string>
#include <vector>
#include <algorithm>
#include <iterator>
#include <map>
#include <sstream>
using namespace std;
using namespace stdcomb;

      struct Element
{
   char name[6];
   int numbers[30];
   char chain[90];
};

const Element elements[] = {
   {
         "ia11",
         {3,9,17,21,24,31,33,36,42,49,4,8,19,22,28,30,34,39,43,47,2,6,10,13,14,25,29,37,38,46},
         "3,9,17,21,24,31,33,36,42,49,4,8,19,22,28,30,34,39,43,47,2,6,10,13,14,25,29,37,38,46"
   }, {
         "ia34",
         {1,6,12,15,22,27,31,32,41,42,4,7,14,17,23,30,33,36,45,48,2,9,13,18,21,26,34,39,44,49},
         "1,6,12,15,22,27,31,32,41,42,4,7,14,17,23,30,33,36,45,48,2,9,13,18,21,26,34,39,44,49"
   }, {
         "ia72",
         {3,8,11,18,22,25,36,37,43,46,1,6,16,17,23,28,35,40,41,44,2,5,12,19,24,27,31,34,42,49},
         "3,8,11,18,22,25,36,37,43,46,1,6,16,17,23,28,35,40,41,44,2,5,12,19,24,27,31,34,42,49"
   }, {
         "ia167",
         {3,4,12,15,21,28,32,39,47,48,6,9,16,17,29,30,31,38,41,42,7,8,11,20,26,27,34,35,45,46},
         "3,4,12,15,21,28,32,39,47,48,6,9,16,17,29,30,31,38,41,42,7,8,11,20,26,27,34,35,45,46"
   }, {
         "ia190",
         {3,10,11,14,22,23,32,35,43,44,6,9,16,19,24,29,37,38,45,48,2,5,13,18,25,30,31,40,41,0},
         "3,10,11,14,22,23,32,35,43,44,6,9,16,19,24,29,37,38,45,48,2,5,13,18,25,30,31,40,41,0"
   }, {
         "ia21",
         {2,5,16,19,25,30,34,39,45,48,1,9,12,13,21,24,33,36,44,49,3,8,15,20,23,26,35,40,43,46},
         "2,5,16,19,25,30,34,39,45,48,1,9,12,13,21,24,33,36,44,49,3,8,15,20,23,26,35,40,43,46"
   }, {
         "ia64",
         {6,9,13,20,28,29,33,40,43,48,2,7,16,19,24,27,31,34,44,47,5,8,14,17,21,30,32,37,41,46},
         "6,9,13,20,28,29,33,40,43,48,2,7,16,19,24,27,31,34,44,47,5,8,14,17,21,30,32,37,41,46"
   }, {
         "ia102",
         {4,9,14,19,22,29,35,38,46,47,5,8,13,16,21,26,33,40,41,48,6,7,15,17,28,30,32,39,42,45},
         "4,9,14,19,22,29,35,38,46,47,5,8,13,16,21,26,33,40,41,48,6,7,15,17,28,30,32,39,42,45"
   }, {
         "ia178",
         {6,9,15,20,23,24,37,38,42,45,7,8,16,19,22,25,34,39,43,46,1,2,17,18,26,29,31,40,47,0},
         "6,9,15,20,23,24,37,38,42,45,7,8,16,19,22,25,34,39,43,46,1,2,17,18,26,29,31,40,47,0"
   }, {
         "ia180",
         {1,4,13,18,27,30,33,38,45,46,2,3,12,15,22,23,39,40,44,47,8,9,11,17,24,25,32,37,49,0},
         "1,4,13,18,27,30,33,38,45,46,2,3,12,15,22,23,39,40,44,47,8,9,11,17,24,25,32,37,49,0"
   }
};

int main(int argc, char *argv[])
{

   CIdxComb cb;
   cb.SetSizes(10,6);

   vector<int> combination(6);
   combination[0] = 0;
   combination[1] = 1;
   combination[2] = 2;
   combination[3] = 3;
   combination[4] = 4;
   combination[5] = 5;

   int Total = 0;
   bool GetNextComb(std::vector<unsigned int> &vi);

   while(cb.GetNextComb(combination))//the compiler stops here
   {
         Total++;
         cout << "Combination number. " << Total << endl;

         for (unsigned i = 0; i < combination.size(); i++)
         {
            const Element &element = elements[combination[i]];
            cout << element.name << ": " << element.chain << endl;
         }

         cout << endl;
   }

      system("PAUSE");
      return EXIT_SUCCESS;
}

Re: Matching function for the code

Selvam R10-Sep-09 9:40

Selvam R

10-Sep-09 9:40

try to move the following line to outside main function

bool GetNextComb( std::vector<unsigned int> &vi );

Thanks and Regards,
Selvam,
http://www.wincpp.com

Re: Matching function for the code

Maximilien10-Sep-09 9:43

Maximilien

10-Sep-09 9:43

You probably need to define the GetNextComb function; here you simply declared it (and the declaration should be out of the "main" function.

This signature was proudly tested on animals.

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