C / C++ / MFC Discussion Boards

Hamid_RT11-Sep-07 1:55

11-Sep-07 1:55

Do you want to make it with code you can use of CreateWindow("Butotn")... if you want to make a button for enetr you can set id of button to IDOK.

CEdit* pEdit = m_Pressure.GetEditControl(); is returning Null always

shir_k10-Sep-07 21:19

shir_k

10-Sep-07 21:19

Hi,

I have a list control on my dialog box.Property is set to Report view & member name is m_Pressure.
CEdit* pEdit = m_Pressure.GetEditControl();
Above function is always returning NULL.
Please help me out

Thanks

Re: CEdit* pEdit = m_Pressure.GetEditControl(); is returning Null always

Naveen10-Sep-07 21:44

Naveen

10-Sep-07 21:44

shir_k wrote:
CEdit* pEdit = m_Pressure.GetEditControl();

For this function to work, you have set the style LVS_EDITLABELS for list control. Also this function return a pointer only if you started editing the list control.

Either by clicking on list control or by sending the LVM_EDITLABEL( EditLabel()) to the list control.

nave

[OpenedFileFinder]

Re: CEdit* pEdit = m_Pressure.GetEditControl(); is returning Null always

shir_k10-Sep-07 22:54

shir_k

10-Sep-07 22:54

In Property of Control list i checked edit labels.
I included NM_Click function as below.
ptrPressInPSI is a pointer to the control list
CListCtrl *ptrPressInPSI;
ptrPressInPSI = &m_Pressure;
void list::OnClickList1(NMHDR* pNMHDR, LRESULT* pResult)
{
// TODO: Add your control notification handler code here
CEdit* edit = ptrPressInPSI->GetEditControl();
if (edit)
{
int i;
i=0;
}
*pResult = 0;
}
Any thing wrong in above code.It is still returning NULL

thanks

Re: CEdit* pEdit = m_Pressure.GetEditControl(); is returning Null always

Naveen10-Sep-07 23:18

Naveen

10-Sep-07 23:18

shir_k wrote:
I included NM_Click function as below.

Use LVN_BEGINLABELEDIT instead.

nave

[OpenedFileFinder]

Re: CEdit* pEdit = m_Pressure.GetEditControl(); is returning Null always

shir_k10-Sep-07 23:51

shir_k

10-Sep-07 23:51

Thanks naveen. I got it.
But one question why am not able to use above code in other functions.I want to include copy & paste function for CListCtrl,Below is a code which i got from google
In the below code am facing two problems
1)As i told CEdit* edit = m_Pressure.GetEditControl(); is always NULL
2)when i include CListCtrl& m_list4 = GetListCtrl( ); am getting below errors
D:\JUNE\VC\test1\list.cpp(147) : error C2065: 'GetListCtrl' : undeclared identifier
D:\JUNE\VC\test1\list.cpp(147) : error C2440: 'initializing' : cannot convert from 'int' to 'class CListCtrl &'

BOOL list::PreTranslateMessage(MSG* pMsg)
{
// TODO: Add your specialized code here and/or call the base class
if ( pMsg->message == WM_KEYDOWN )
{

CListCtrl& m_list4 = GetListCtrl( );
CEdit* edit = m_Pressure.GetEditControl();

if (edit)
{
if( GetKeyState( VK_CONTROL ))
{
if( pMsg->wParam == VK_C )
{
edit->Copy();
return TRUE;
}
if( pMsg->wParam == VK_V )
{
edit->Paste();
return TRUE;
}
if( pMsg->wParam == VK_X )
{
edit->Cut();
return TRUE;
}
if( pMsg->wParam == VK_Z )
{
edit->Undo();
return TRUE;
}
}
if( pMsg->wParam == VK_RETURN || pMsg->wParam == VK_ESCAPE ||
pMsg->wParam == VK_CONTROL || pMsg->wParam == VK_INSERT ||
pMsg->wParam == VK_SHIFT )
{
edit->SendMessage(WM_KEYDOWN, pMsg->wParam, pMsg->lParam);
return TRUE;
}
}
}

return CDialog::PreTranslateMessage(pMsg);
}
Please help me out.

Thanks

Re: CEdit* pEdit = m_Pressure.GetEditControl(); is returning Null always

Naveen11-Sep-07 0:03

Naveen

11-Sep-07 0:03

GetEditControl() will return only a vaild pointer only if the edit control is visible to the user. in other cases, it will be null.

About the above code, they might have implemented there on edit control in the list control.

shir_k wrote:
I want to include copy & paste function for CListCtrl,

Are you trying to paste when the edit control is visible?If so, there is no need of the above code na? You can directly do copy/paste on edit control.

nave

[OpenedFileFinder]

Re: CEdit* pEdit = m_Pressure.GetEditControl(); is returning Null always

shir_k11-Sep-07 0:31

shir_k

11-Sep-07 0:31

Hi,
Am able to do copy & paste from the edit box directly but in Control list box it is not possible.
When i checked class definition of
CEdit --> it has clipboard operation
void Clear();
void Copy();
void Cut();
void Paste();
But i didn't find it in CListCtrl.So i thought of using
CEdit* GetEditControl() const;
so once i get handle then i may able to do copy & paste.
Is there any other way to do.

Re: CEdit* pEdit = m_Pressure.GetEditControl(); is returning Null always

Naveen11-Sep-07 1:00

Naveen

11-Sep-07 1:00

shir_k wrote:
so once i get handle then i may able to do copy & paste.

Suppose you press ctrl+c on the list control. Then what do u expect?
1)The text in first column of selected row is copied?
2) The whole text in list control is copied?

Also what will be the case of ctrl+c?

nave

[OpenedFileFinder]

Re: CEdit* pEdit = m_Pressure.GetEditControl(); is returning Null always

shir_k11-Sep-07 3:12

shir_k

11-Sep-07 3:12

i expect it to copy the selected data in the column.Am having only one column.
And i want that data to be pasted in a notepad.

Re: CEdit* pEdit = m_Pressure.GetEditControl(); is returning Null always

Naveen11-Sep-07 15:06

Naveen

11-Sep-07 15:06

shir_k wrote:
i expect it to copy the selected data in the column

Then no need of the edit control and all.

Directly copy the data from the clipboard and set it as text to the column.

nave

[OpenedFileFinder]

Re: CEdit* pEdit = m_Pressure.GetEditControl(); is returning Null always

shir_k11-Sep-07 18:08

shir_k

11-Sep-07 18:08

i don't know how to copy data from Control list to clipboard and from clipboard to notepad.
I tried this using API's(OpenClipBoard()....) of MFC but i was not sucessful. If u have any code plz share it or tell me the steps to do it.

Thanks

Re: CEdit* pEdit = m_Pressure.GetEditControl(); is returning Null always

Naveen11-Sep-07 18:14

Naveen

11-Sep-07 18:14

try this. this will copy the text in the selected row to clip board.

<br />
int nItem =  m_list.GetNextItem( -1, LVNI_SELECTED );<br />
    if( -1 == nItem )<br />
    {<br />
        return;<br />
    }<br />
CString csPath;<br />
	csPath = m_list.GetItemText( nItem,0 );<br />
	OpenClipboard();<br />
	EmptyClipboard(); <br />
	int nSize = (csPath.GetLength() + 1) * sizeof(TCHAR);<br />
    HGLOBAL  hglbCopy = GlobalAlloc(GMEM_MOVEABLE, nSize ); <br />
    if (hglbCopy == NULL) <br />
    { <br />
        CloseClipboard(); <br />
        return; <br />
    } <br />
    LPTSTR lpData = (LPTSTR)GlobalLock(hglbCopy); <br />
    memcpy(lpData, csPath, nSize ); <br />
    lpData[nSize-1] = (TCHAR) 0;<br />
    GlobalUnlock(hglbCopy);<br />
    SetClipboardData( CF_UNICODETEXT, hglbCopy ); <br />
	CloseClipboard();

where m_list is the control variable for the list control

nave

[OpenedFileFinder]

Re: CEdit* pEdit = m_Pressure.GetEditControl(); is returning Null always

shir_k11-Sep-07 19:14

shir_k

11-Sep-07 19:14

Thanks a lot Naveen.
Am able to copy the data.I was trying this from past 3 days.Thank you very much.

error message from OLEView

George_George10-Sep-07 21:04

George_George

10-Sep-07 21:04

Hello everyone,

I have used unmanaged C++ developed a native COM DLL. Then I use OLE Viewer (from command line oleview) to open (Bind To File function) the DLL. Then there is an error message.

IMoniker:BindToObject failed on the file moniker created from (c:\temp\foo.dll) Bad extension for file

(MK_E_INVALIDEXTENSION) ($800401E6)

Anything wrong?

thanks in advance,
George

tlbexp command

George_George10-Sep-07 20:32

George_George

10-Sep-07 20:32

Hello everyone,

I find that we can use tlbexp command like *tlbexp <dll name="">* to export tlb file for a C# COM assembly, but can not use it to export tlb file for an unmanaged C++ COM DLL. Is that correct?

I am wondering how to export tlb file of an unmanaged C++ COM DLL?

thanks in advance,
George

SCM: Does it handle crashing/abruptly killed services ?

Yashusid10-Sep-07 20:00

Yashusid

10-Sep-07 20:00

I have a service, i need to do some task when its been killed from task manager/abruptly stopped. How can i do it ? does SCM sends some message so that i can handle it in Service Control handler function ??

Java Style Socket Programming in C++

maglev_tgv10-Sep-07 19:59

maglev_tgv

10-Sep-07 19:59

I just began learning socket programming and use
http://www.codeproject.com/internet/JavaCSocket.asp[^]
this article as my reference.

I tried the attached example project, and found that it was easy to use.
But when I add the files ( sock.cpp, sock.h ) to my other project, there was many errors when I build it, such as

LINK : fatal error LNK1152: cannot resolve one or more undecorated symbols

Can anybody tell me what should I do?
Thanks in advance

----------
C++ Learner

Re: Java Style Socket Programming in C++

baerten10-Sep-07 23:23

baerten

10-Sep-07 23:23

You need to include WS2_32.lib into you project.
Add this library simply to your project (like adding an existing .cpp or .h )

Good luck

Finding files

Waldermort10-Sep-07 19:48

Waldermort

10-Sep-07 19:48

I have coded a loop to find all files and folders on a certain drive. The loop works flawlessly but it takes too much time. On my machine, scanning drive C with close to 100000 files, it takes a good 7 seconds. The loop works in a way that it does a recursive search of each directory, copies the filename and path and adds this to a linked list for later processing.

I'm looking for a way to speed this process up. The use of threads may well do this, but it would be more than complicated to code. How would you decide when a thread is required, how would you manage the handles and synchronisation problems?

I would be interested to know how others would approach this problem.

Waldermort

Re: Finding files

Nishad S10-Sep-07 20:01

Nishad S

10-Sep-07 20:01

One suggestion, but I am not sure it is useful to you.

Since there is a lot of files in the drive, I would limit the searching to certain level. For example, first search the root. The search will be done for one of the subfolder only when it is needed. So the initial time can be reduced.

- NS -

Re: Finding files

Waldermort10-Sep-07 23:50

Waldermort

10-Sep-07 23:50

Unfortunatly that isn't going to work. I need to perform a series of calculations for each file on the drive, which in itself can be a time consuming procedure. To avoid this I decided to fist construct a linked list of all the files. From there I can launch a series of threads to do the bulk of the work.

I guess there is no way around it but to add a "please wait" popup Frown | :(

Waldermort

Re: Finding files

Nishad S11-Sep-07 1:39

Nishad S

11-Sep-07 1:39

WalderMort wrote:
but to add a "please wait" popup

- NS -

Registry

john563210-Sep-07 19:47

john5632

10-Sep-07 19:47

Hi Experts,
How can I check for particular version of MS-Outlook from registry value.

Thanx in advance.

Re: Registry

Arman S.10-Sep-07 20:22

Arman S.

10-Sep-07 20:22

HKEY_LOCAL_MACHINE/SOFTWARE/Microsoft/Outlook Express/Version Info/Current

The Data field of the Current is the version of your outlook express, e.g. 6,0,2900,2180.

--
=====
Arman

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