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Joining pixels

chaitanya2230-Mar-06 4:25

chaitanya22

30-Mar-06 4:25

Hello,
I would like to know, for joining two pixels in a bitmap.
As i have set of pixels, so i need to join them.

Re: Joining pixels

Maximilien30-Mar-06 4:29

Maximilien

30-Mar-06 4:29

huh ?

pixels are independant entities ( if I may say so ); even in a bitmap.

what exactly are you wanting to do ?

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: Joining pixels

chaitanya2230-Mar-06 4:55

chaitanya22

30-Mar-06 4:55

I have set of cartesian coordinates, i plotted them on bitmap by using SetPixel(...);,
and so then i would like to join all the pixels.

Re: Joining pixels

Maximilien30-Mar-06 4:57

Maximilien

30-Mar-06 4:57

like what, draw a line between those points ?

Maximilien Lincourt
Your Head A Splode - Strong Bad

Re: Joining pixels

chaitanya2230-Mar-06 5:02

chaitanya22

30-Mar-06 5:02

yes, to draw a line between those points

Re: Joining pixels

Hamid_RT30-Mar-06 4:42

Hamid_RT

30-Mar-06 4:42

Hi chaitanya22 ,
Can you be more specific ? what do you need?

FlexGrid control

HvalaMne30-Mar-06 3:43

HvalaMne

30-Mar-06 3:43

Doesw anybody knows if MS flexgrid supports user input?
I inserted it in project, but I didn't manage to enter any text in a cell. The control is not disabled. Setting cell text by .put_Text works.

Re: FlexGrid control

toxcct30-Mar-06 3:58

toxcct

30-Mar-06 3:58

i don't think that is possible with MSFlexGrid.
you could use CGridCtrl[^] for instant editing...

Re: FlexGrid control

HvalaMne30-Mar-06 20:03

HvalaMne

30-Mar-06 20:03

thks

Array Of CWnd Objects (Dynamic)

CQub30-Mar-06 3:22

CQub

30-Mar-06 3:22

//in class defination
CWnd TempObject;

struct ControlObjects //Represents the dynamically created controls.
{
CWnd *WndObject;
}*ptrControlObjects;

//in member function
ptrControlObjects=(struct ControlObjects*)malloc(sizeof(struct ControlObjects)*numControls);

//necessary or it will give assertion in CreateControl.
for(int numWindObject=0;numWindObject<numcontrols;numwindobject++)
{
ptrcontrolobjects[numwindobject].wndobject="NULL;
}
//problem
ptrControlObjects[0].WndObject-">CreateControl("VALID PARAMETERS");
The above statement creates the control and displays it but not storing the object of the newly created control!! while...
TempObject.CreateControl("VALID PARAMETERS"); ...creates,displays and is able to store the object of the control!!

Can anybody please explain to me?

I want to have same behavior of the dynamic array of the controls(all the controls will be same)

Thanks.

Re: Array Of CWnd Objects (Dynamic)

CQub30-Mar-06 3:38

CQub

30-Mar-06 3:38

Solved...

//necessary or it will give assertion in CreateControl.
for(int numWindObject=0;numWindObject{
ptrControlObjects[numWindObject].WndObject=new CWnd;
}

Thanks...

Can anybody explain this to me?

Waldermort30-Mar-06 3:10

Waldermort

30-Mar-06 3:10

I'm streaming text into a richedit control usiong ES_STREAMIN, I am also catching the EN_CHANGE for this control in an attempt to implement an auto save feature and an undo/redo feature.

Here is a small sample of the code:

if (strlen(Awaiting))
    return -1;

    // enter direct to control
if (RichEdit_SetRTF(hEdit,lpszstr) ) { // richedit callback
    ClrHistory();

I have set a breakpoint on each line of that code, aswell as the EN_CHANGE message. All runs in order until the Richedit callback, before proceeding to the next line, the EN_CHANGE is trapped. i.e. We send the text, and everything waits until the EN_CHANGE has been processed.

Problem is, I am not yet ready to process this message. If this is too easy i appologise in advance.

Re: Can anybody explain this to me?

Rage30-Mar-06 5:13

Rage

30-Mar-06 5:13

waldermort wrote:
Problem is, I am not yet ready to process this message

I do not think I have understood what your problem exactely is. What is it that you do not want ?

~RaGE();

Re: Can anybody explain this to me?

Waldermort30-Mar-06 5:22

Waldermort

30-Mar-06 5:22

I couldn't understand why the EN_CHANGE message was being sent and processed before I had completed that particular function. I guess it was being sent from the control as a SendMessage instead of a Postmessage.

I was not ready to process it since after setting the control text I needed to set some flags and fill some buffers. This was causing my EN_CHANGE handler to process the wrong information.

I have managed to overcome it by setting a few flags and sending a custom message. I now have a fully working auto save/redo/undo/IME-compatible edit box. Guess in future I should never trust exactly when a windows message will be sent.

Re: Can anybody explain this to me?

Rage30-Mar-06 7:07

Rage

30-Mar-06 7:07

waldermort wrote:
I have managed to overcome it by setting a few flags and sending a custom message. I now have a fully working auto save/redo/undo/IME-compatible edit box. Guess in future I should never trust exactly when a windows message will be sent.

Ok, glad you have sorted it out. Sorry we could not help earlier.

~RaGE();

Get Item Text in LitBox Problem

gbruyneel30-Mar-06 2:36

gbruyneel

30-Mar-06 2:36

Hello,
I have a project (VS2005) with a dialogBox containing a listBox filled with my drive letters.
I use that code to populate the listbox :

BOOL NewDlgProc_OnInitDialog(HWND hwnd, HWND hwndFocus, LPARAM lParam)<br />
{_TCHAR path[MAX_PATH];<br />
 int res;<br />
 _tcscpy_s(path, MAX_PATH, _T("*.*"));<br />
 res = DlgDirList(hwnd,(LPTSTR) path, IDL_DRIVE, 0, DDL_DRIVES);<br />
 if (res == 0)<br />
 {<br />
   MessageBox(hwnd, _T("No drive available"), _T("Warning!"),MB_OK | MB_ICONINFORMATION);<br />
 }<br />
 return TRUE;<br />
}

I would like to get the text of the selected item so i wrote the folowing code :

<br />
void NewDlgProc_OnSeldrive(HWND hwnd, int id, HWND hwndCtl, UINT codeNotify)<br />
{<br />
 LRESULT len=0;<br />
 LRESULT index;<br />
 // I Get the index of the selected item<br />
 index = SendDlgItemMessage(hwnd, IDL_DRIVE, LB_GETCURSEL, 0, 0);<br />
 if (index != LB_ERR)<br />
 {<br />
  _TCHAR driveText[8];<br />
  // I try to get the text of the selected item<br />
  len = SendDlgItemMessage(hwnd, IDL_DRIVE, LB_GETTEXT, (WPARAM)index2, (LPARAM)driveText);<br />
  if (gbr_len != LB_ERR)<br />
  {<br />
    ...<br />
  }<br />
 }<br />
...<br />
}

When i try to debug this code i have in the listbox two items with the folowing text : [-c-] and [-d-].
When i select an item i got in driveText variable something like that :

driveText[0] = 0x0e1c <br />
driveText[1] = 0x0013<br />
driveText[2] = 0x005b  '['<br />
driveText[3] = 0x002d  '-'<br />
driveText[4] = 0x0064  'd'<br />
driveText[5] = 0x002d  '-'<br />
driveText[6] = 0x005d  ']'<br />
driveText[7] = 0<br />

I do not understand why i get the first two index. I should have get directly the text '[-d-]'.

Could someone help me ?

Best regards.

Re: Get Item Text in LitBox Problem

David Crow30-Mar-06 2:47

David Crow

30-Mar-06 2:47

gbruyneel wrote:
len = SendDlgItemMessage(hwnd, IDL_DRIVE, LB_GETTEXT, (WPARAM)index2, (LPARAM)driveText);

index2 is not defined.

gbruyneel wrote:
if (gbr_len != LB_ERR)

gbr_len is not defined.

Other than that, your code snippet worked fine for me.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: Get Item Text in LitBox Problem

gbruyneel30-Mar-06 2:56

gbruyneel

30-Mar-06 2:56

Oops I missed the final code :

void NewDlgProc_OnSeldrive(HWND hwnd, int id, HWND hwndCtl, UINT codeNotify)<br />
{<br />
LRESULT len=0;<br />
LRESULT index;<br />
// I Get the index of the selected item<br />
index = SendDlgItemMessage(hwnd, IDL_DRIVE, LB_GETCURSEL, 0, 0);<br />
if (index != LB_ERR)<br />
{<br />
_TCHAR driveText[8];<br />
// I try to get the text of the selected item<br />
len = SendDlgItemMessage(hwnd, IDL_DRIVE, LB_GETTEXT, (WPARAM)index, (LPARAM)driveText);<br />
if (len != LB_ERR)<br />
{<br />
...<br />
}<br />
}<br />
...<br />
}<br />

What are your result is it the same as mine, i have tried to switch to MBCS and i have the same behaviour.

Re: Get Item Text in LitBox Problem

David Crow30-Mar-06 3:49

David Crow

30-Mar-06 3:49

gbruyneel wrote:
...is it the same as mine,

No.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: Get Item Text in LitBox Problem

Hamid_RT30-Mar-06 4:31

Hamid_RT

30-Mar-06 4:31

Hope I understood your question you need to get text of Listbox

Like this

TCHAR path[MAX_PATH];
int res;
_tcscpy(path, "*.*");

res=::DlgDirList(m_hWnd, path, IDC_LIST2, IDC_STATIC2, DDL_DRIVES);

TCHAR driveText2[256];//[8]
driveText2[0]='\0';
::SendMessage(hwnd, LB_GETTEXT, 0, (LPARAM)driveText2);

string array

J512198230-Mar-06 2:35

J5121982

30-Mar-06 2:35

how to return string array from a method?

CString myclass::getStr()
{
CString strarr[]={"JAYARAJ","bala"}
return strarr;
}

i get error ..

how to do it...?

JAYARAJ

Re: string array

David Crow30-Mar-06 2:51

David Crow

30-Mar-06 2:51

J5121982 wrote:
CString strarr[]={"JAYARAJ","bala"}

What are you trying to do here? strarr is not an array like you might think. If you need an array of CString objects, use CStringArray. Otherwise, you'll need something like:

char *strarr[] = {"JAYARAJ", "bala"};

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: string array

Rage30-Mar-06 2:53

Rage

30-Mar-06 2:53

Your function returns _one_ CString, not an array.

CStringArray myclass::getStr()
{
CStringArray csa;
csa.Add("str1");
csa.Add("str2");
return csa;
}

~RaGE();

-- modified at 8:55 Thursday 30th March, 2006 : Sorry David, you posted while I was writing.

Re: string array

J512198230-Mar-06 18:40

J5121982

30-Mar-06 18:40

i got this error

what to do?

error C2558: class 'CStringArray' : no copy constructor available

JAYARAJ

Re: string array

Rage30-Mar-06 19:46

Rage

30-Mar-06 19:46

You cannot use the = operator on a CStringArray, you'll have to use the Copy function.

~RaGE();

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