C / C++ / MFC

Re: changing the cursor postion in a editable combobox???

15-Nov-07 5:34

Asuming m_Combo1 is the variable of class CComboBox try

int tLen = m_Combo1.GetLBTextLen(m_Combo1.GetCurSel());<br />
m_Combo1.SetEditSel(tLen,tLen);

I hope it helps

Deepu Antony15-Nov-07 7:45

Deepu Antony

15-Nov-07 7:45

thankyou for kind reply,

But it was not working...

Re: changing the cursor postion in a editable combobox???

SnaKeBeD15-Nov-07 7:49

SnaKeBeD

15-Nov-07 7:49

thankyou for kind reply,

But it was not working...

||SnAkeBed||

Re: changing the cursor postion in a editable combobox???

David Crow15-Nov-07 8:42

David Crow

15-Nov-07 8:42

SnaKeBeD wrote:
But it was not working...

Which means what?

"Normal is getting dressed in clothes that you buy for work and driving through traffic in a car that you are still paying for, in order to get to the job you need to pay for the clothes and the car and the house you leave vacant all day so you can afford to live in it." - Ellen Goodman

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Re: changing the cursor postion in a editable combobox???

DoomedOne15-Nov-07 9:45

Re: changing the cursor postion in a editable combobox???

15-Nov-07 9:45

try this, it work for me.
In a MFC dialog app , add a ComboBox, add a control variable m_Combo1 for it.
in the CBN_EDITCHANGE message map the metod: OnCombo1EditChange
In the body copy the folowing code

<br />
void CMFC1Dlg::OnCombo1EditChange()<br />
{<br />
   // Here you should do or call the process to look for text on the DB <br />
   // and modify the ComboBox item list and text <br />
   <br />
   //for this examle<br />
   //Here I get the text entered and compare it whit a fixed text "New"<br />
   //If the user entered "New" and not exists the item "New Element" in<br />
   //the combo list, I add de element<br />
   //then select the "New Element" item as the current selected item<br />
   // Set the cursor at the end of the element<br />
   // <br />
   // For a real use, I think, is better select the text since the <br />
   // last entered character to the end of the text<br />
   // <br />
   CString UserText;<br />
   TCHAR AddText[12] = _T("New Element");<br />
   CWnd * pEdit = m_Combo1.GetWindow( GW_CHILD ); <br />
   ASSERT( pEdit );<br />
   pEdit->GetWindowText(UserText);<br />
   if ( UserText.Compare(_T("New"))==0)<br />
   {<br />
      if (m_Combo1.FindString(-1,&AddText[0])==CB_ERR ) <br />
      {<br />
         m_Combo1.AddString(&AddText[0]);<br />
         m_Combo1.SetCurSel(m_Combo1.FindString(-1,&AddText[0]));<br />
      }<br />
      int tLen = m_Combo1.GetLBTextLen(m_Combo1.GetCurSel());<br />
      m_Combo1.SetEditSel(tLen,tLen); <br />
   }<br />
}<br />
<br />

//Note CMFC1Dlg is the class for the dialog

Or take a look at:

http://www.codeproject.com/combobox/combocompletion.asp

chandu00415-Nov-07 21:05

chandu004

15-Nov-07 21:05

thanks for your post,
this may be useful for me in future.
BTW, can you suggest me some technique in code project such that i can mark my favourites (like that of yours) such that i can refer them in future?
thank you.

Re: changing the cursor postion in a editable combobox???

Nelek15-Nov-07 23:46

Re: changing the cursor postion in a editable combobox???

15-Nov-07 23:46

What about the permalink (4th place "reply" and so on)

Greetings.

--------
M.D.V. Wink | ;)

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

Help me to understand what I'm saying, and I'll explain it better to you

“The First Rule of Program Optimization: Don't do it. The Second Rule of Program Optimization (for experts only!): Don't do it yet.” - Michael A. Jackson

chandu00416-Nov-07 20:55

chandu004

16-Nov-07 20:55

thanks for your reply,
but will the permalink adds the post to my favourites?
what i mean is, i should be able to see my favourites from any system. can you suggest in this regard?
and replying tthe interested post and finding them in my posts from my profile page will also do.
but i would have to reply them saying
"thank you and your post is useful for me in future"
which occupies unnecessary space in CP and this may also be in convinient to some members.
thank you.

Re: changing the cursor postion in a editable combobox???

Nelek19-Nov-07 21:39

Re: changing the cursor postion in a editable combobox???

19-Nov-07 21:39

Yes, make a try... if you use search for a message, there will be "?" and "search" keywords in the url on the navigator when you go to the selected one. But once you are in the message, if you press "permalink" then the navigator autoupdates itself and in the toolbar you will have an URL in absolute mode with the code ID of the forum and message. So if you add it in favourites or copy paste in a txt you will have the url to the message, although the board grows a lot.

I make it that way, take the permalink and then write down a short description in a txt, adding the link at the end. So I have the direction and something that helps me find the one I need.

Greetings.

--------
M.D.V. Wink | ;)

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
“The First Rule of Program Optimization: Don't do it. The Second Rule of Program Optimization (for experts only!): Don't do it yet.” - Michael A. Jackson

SnaKeBeD16-Nov-07 4:33

SnaKeBeD

16-Nov-07 4:33

hi thankyou for sending the code ,
your piece of code is working fine when i tried as seperate program

i'm sending the piece of code where i have to change the cursor postion. Since i have to Reset the condent of the combobox for the previous value, can u tell me tsome way to sort it out????

void CBillingDlg::OnEditchangeProductID()
{
int vv=m_ProductID.GetCoun();//m_ProductID
//is my variable for combo box
CString var;
CString xx;
m_ProductID.GetWindowText(var);//getting text//
xx=var;
var=var+'%';
m_ProductID.ResetContent();//Foe clearing the previous values//
m_ProductID.SetWindowText(xx);
/*Below Code for accessing the database*/
CString query;
query.Format("Select ProductID from Product where ProductID like '%s%%'",var);

TCHAR sz[1024];
sprintf(sz, query);
char *ptr=sz;
bas obj;
spring++;
int i=obj.ProductName(ptr,"ProductID");
for(int peek = 0;peek<obj.x;peek++)
{
="" m_productid.insertstring(peek,(lpctstr)obj.usernames[peek]);
=""
="" }
="" *accessing="" the="" database-end**=""
}=""

<div="" class="ForumSig">||SnAkeBed||

Re: changing the cursor postion in a editable combobox???

DoomedOne16-Nov-07 6:53

How can block a Messenger packet....?

16-Nov-07 6:53

The easy way set the sorted property of the ComboBox to true, if the sort order is defined by the text in the list.

If not the easiest way is to add an “Order by” in the Query. Assuming the Data source supports it (i.e. Any ANSI SQL DB), and the ordering key is accessible in the query.

If the order needed is not defined by the data returned or accessed in the query you need to sort it manually, i.e. loading it into a vector or array, ordering the array with any sorting method (bobble, fast sort, hash tables ...)
Then insert the values from the ordered array.

jomons15-Nov-07 2:24

jomons

15-Nov-07 2:24

Hi,

I have an instant message packet.how can i block this specific packet to reach to the destination?I can block this by changing the content of packet.
But after that no more messages are send by the messenger(Yahoo).
Im working with the packet in VC++ according to this protocol help.
http://libyahoo2.sourceforge.net/ymsg-9.txt[^]

I got the packet. But i can't block this.I think yahoo or TCP\IP send an acknowledgement signal before sending each and every packet or one of them calculate the check sum.So it resend the packet.
How can i do this. If you have any idea please tell me ...
Please help me ..very urgent............

Thanks in advance.......

Jomon

Re: How can block a Messenger packet....?

Matthew Faithfull15-Nov-07 4:06

Matthew Faithfull

15-Nov-07 4:06

In general if blocking the packet breaks the protocol you can't do it and expect the protocol to continue. However if you set up a proper protocol transparent transiever which fakes both ends of the protocol you could do it.

| You write this part which mostly justs forwards |
real server<----->fake client interface<>filter<>fake server interface<----->real client

In this kind of arrangement both ends of the original system think they are connected to each other but they're really connected to your software. You can then forward or block packets at will and still provide valid acknowledgements back to the sender so it cannot tell they have been blocked. Depending on the protocol you might have to send alternative faked packets in place of the ones blocked to keep the other end happy in terms of packet sequence numbers, checksums etc.
You should be aware that any such piece of software is probably going to meet the definition of a trojan and may not be legal to actually install. If you write it, it's entirely your responsibility I'm not encouraging you to do so or offering assistance.

Nothing is exactly what it seems but everything with seems can be unpicked.

need help with c programming data validation

neodeaths15-Nov-07 2:17

neodeaths

15-Nov-07 2:17

hi i am trying to make a input data validation.

what i am trying to do is when data is inputed it is inputed first as a string(char[])

then i need to convert the string to an int or an float or etc... after i check that it is a valid int and such.

so my question is if there is any function like:
int isvalid<== check weahter an string is a valid int
convert string to int <== convert the valid string into a inv

same for floar and others..

please help i think this is a very useful code to learn

Re: need help with c programming data validation

Matthew Faithfull15-Nov-07 2:24

Matthew Faithfull

15-Nov-07 2:24

The are two ways to check whether a string is a valid int:

1) try to convert it and catch any failure conditions.
2) write your own string analysis or perhaps make use of a regular expression implementation to do some kind of custom check on the string.

Look for functions like atoi, atod, atof, strtod? for converting C character array type strings to ints floats and doubles.

Nothing is exactly what it seems but everything with seems can be unpicked.

Re: need help with c programming data validation

neodeaths15-Nov-07 4:33

neodeaths

15-Nov-07 4:33

it is weirld but i cant seems to use try{} catch{} in c programming the compilr does accept it anybody knows why?

Re: need help with c programming data validation

DoomedOne15-Nov-07 5:01

15-Nov-07 5:01

try{} catch{} are C++ not C
you shoud tyr __try __except ( ) instead

Warning __try __except is Microsoft Specific so it don't work in other compilers

MDI without Doc/view

CodeMak15-Nov-07 1:30

15-Nov-07 1:30

HI
i want to use different captions for each MDI child window i create.
i am creating it using CreateNewChild function.

also how to assign some values for each child i create so that i can iterate over them or identify them using that value.

Thanx'n'advance

Nelek15-Nov-07 1:35

15-Nov-07 1:35

I made it (Inside DOC/VIEW architechture) in the CChildFrm::PreCreateWindow (CREATESTRUCT &cs). If you have that class, perfect. If not... take a look into your docu to that function, maybe it helps you to find out how to do it.

Greetings.

--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?

Help me to understand what I'm saying, and I'll explain it better to you

“The First Rule of Program Optimization: Don't do it. The Second Rule of Program Optimization (for experts only!): Don't do it yet.” - Michael A. Jackson

Wink | ;)

CodeMak15-Nov-07 1:39

15-Nov-07 1:39

ya i too have those class n functions available...

plz help me in detail...

CodeMak15-Nov-07 1:44

15-Nov-07 1:44

ya i too have those class n function available..

plz help me in detail...

NOTE:
I am creating child window using CreateNewChild.. how can i make use of
cs.lpCreateParams.

Nelek15-Nov-07 3:03

15-Nov-07 3:03

This is more or less what I made.

BOOL CChildFrame::PreCreateWindow(CREATESTRUCT& cs)
{
	if( !CMDIChildWnd::PreCreateWindow(cs) )
		return FALSE;

	// Set the configuration for the different Views
	extern CFPSDoc* m_pDoc;
;
	if ((m_pDoc) && (m_pDoc->m_szNewFrameName != ""))
	{	cs.style = WS_SYSMENU | WS_CAPTION | WS_OVERLAPPED;   //This is the main View (CScrollView)
;
                //All following type of views are from CFormView derived
		if (m_pDoc->m_szNewFrameName == "ViewType1")
		{	int nMax = 0;
			if (m_pDoc->m_cmlMyList1.GetCount () >= m_pDoc->m_cmlMyList2.GetCount ())
				nMax = m_pDoc->m_cmlMyList1.GetCount ();
			else
				nMax = m_pDoc->m_cmlMyList2.GetCount ();

			cs.cx = 500;
			cs.cy =  (40 + (25 * nMax));   //Variable Frame height according to number of elements
			m_pDoc->m_szNewFrameName = "This is the Type of view 1 in project \"" + m_pDoc->GetTitle () + "\"";
		}
		else if (m_pDoc->m_szNewFrameName == "ViewType2")
		{	cs.cx = 528;				cs.cy =  322;
			m_pDoc->m_szNewFrameName = "Second type of View in project \"" + m_pDoc->GetTitle () + "\"";
			cs.style = cs.style | WS_MINIMIZEBOX;
		}
		else if (m_pDoc->m_szNewFrameName == "ViewType2_Not_Visible")
		{	cs.cx = 1;				cs.cy =  1;
			m_pDoc->m_szNewFrameName = "";
			cs.style = cs.style | WS_MINIMIZE; //this is to have access to some functions coded in the view of second type, but without having the view itself.
		}
		else if (m_pDoc->m_pObj1 || m_pDoc->m_pObj2)  //if one particular element is selected
		{	cs.cx = 415;				cs.cy = 260;
			cs.style = cs.style | WS_MINIMIZEBOX;
		}
		else if ((m_pDoc->m_pObj3) && (m_pDoc->m_pObj3->m_nType == 0)) //if the other type of element is from one subtype
		{	cs.cx = 517;				cs.cy = 421;
			cs.style = cs.style | WS_MINIMIZEBOX;
		}
		else if ((m_pDoc->m_pObj3) && (m_pDoc->m_pObj3->m_nType == 2)) //if the other subtype
		{	cs.cx = 610;				cs.cy = 435;
			cs.style = cs.style | WS_MINIMIZEBOX;
		}
;
		cs.lpszName = m_pDoc->m_szNewFrameName;  //Assigning the correspondent title to the frame
	}
	return TRUE;
}

This is what I use to configure the different type of views that may be opened. Up to 50 different views in 6 different configurations.

Was that what you were asking for? If not... sorry. I didn't understand what you told me

the ";" are used just to avoid the cancellation of empty lines

CodeMak15-Nov-07 17:23

15-Nov-07 17:23

Thanks man..

This will solve my problem.

Cheers....

Nelek15-Nov-07 20:57