C / C++ / MFC Discussion Boards

David Crow13-Aug-03 8:58

13-Aug-03 8:58

Jay Hova wrote:
I tried to implement the code you wrote, but i get an error saying that m_SendTo is an undeclared identifier.

Right. You'll need to add this member variable to the appropriate class.

Jay Hova wrote:
The assertion failure is in afxwin2.inl on line 588....

As I predicted:

_AFXWIN_INLINE int CButton::GetCheck() const
	{ ASSERT(::IsWindow(m_hWnd)); return (int)::SendMessage(m_hWnd, BM_GETCHECK, 0, 0); }

Re: Simple question about radio buttons

Jay Hova13-Aug-03 9:08

Jay Hova

13-Aug-03 9:08

David,

Sorry that you have to spoon feed me through this. I feel like such a moron because I can not grasp this concept. I really appreciate your help.

What do i have to put in DoDataExchange? Also by adding the member variable to the other cpp file, won't it over write the existing data in m_SendTo?

Thanks.

Re: Simple question about radio buttons

David Crow13-Aug-03 9:15

David Crow

13-Aug-03 9:15

Jay Hova wrote:
Sorry that you have to spoon feed me through this. I feel like such a moron because I can not grasp this concept. I really appreciate your help.

Not a problem. The first few applications are always the hardest.

Jay Hova wrote:
What do i have to put in DoDataExchange? Also by adding the member variable to the other cpp file, won't it over write the existing data in m_SendTo?

I've never had to manaully add anything to DoDataExchange(). ClassWizard does it all for me (hint: use CW to create the member and control variables). By looking at that function, however, you can get a feel for what MFC might be doing.

Jay Hova wrote:
Also by adding the member variable to the other cpp file, won't it over write the existing data in m_SendTo?

I'm not quite sure I understand what you are asking here. Care to elaborate?

Re: Simple question about radio buttons

Jay Hova13-Aug-03 9:32

Jay Hova

13-Aug-03 9:32

David,

Thank you for your help. I had to manually insert the control in DoDataExchange because after reading the article you linked me to earlier today, i ungrouped the second radio. It doesn't make sense to me, but it seems to be working right now.

Now to the next part of this app....

Many many thanks for your help, patience, and understanding. You are really a class act guy!

convert a string into a date

si_6913-Aug-03 4:30

si_69

13-Aug-03 4:30

hi all

does ne1 know how i can convert a string into a date

i have an XML tag

<date_in>2003-08-13T09:26:24.7000000+01:00

but this brings the date back as a string,

what i need from there is the date in the format '2003-08-13'
as an actual date

does ne1 have ne ideas

thanks

si

Re: convert a string into a date

si_6913-Aug-03 4:31

si_69

13-Aug-03 4:31

it should be this

<date_in>2003-08-13T09:26:24.7000000+01:00</date_in>

Re: convert a string into a date

si_6913-Aug-03 5:23

si_69

13-Aug-03 5:23

this is what i come up with, if ne1 knows a better way pls let me know

thanks si

CString strTime2=strValue;
int val = strTime2.Find("T");
int len = strTime2.GetLength();
if (val > 0)
{
CString date = strTime2.Left(val);
CString time = strTime2.Right(len-val);
sct_dt.time = strTime2.Mid(++val,8);
CString year = date.Left(4);
CString month = date.Mid(5,2);
CString day = date.Right(2);
sct_dt.date = day+"/"+month+"/"+year;

}

Re: convert a string into a date

David Crow13-Aug-03 5:30

David Crow

13-Aug-03 5:30

Have you looked at COleDateTime::ParseDateTime()?

Re: convert a string into a date

Steve S13-Aug-03 5:43

Steve S

13-Aug-03 5:43

Does that handle XML format dates, then? I knew it did dd/mm/yyyy or mm/dd/yyyy (based on locale). We've a local function to handle XML formatting with or without Thh:mm formats, but it doesn't yet handle offsets.

Steve S

Re: convert a string into a date

David Crow13-Aug-03 5:59

David Crow

13-Aug-03 5:59

Steve S wrote:
Does that handle XML format dates, then?

There's no such thing as XML format dates. XML is a way to organize data. It is not concerned with format or display.

If the first 10 characters of the string is always in the format you previously described, this should work:

CString str = "2003-08-13T09:26:24.7000000+01:00";
COleDateTime date;
date.ParseDateTime(str.Left(10));

Re: convert a string into a date

Steve S13-Aug-03 23:24

Steve S

13-Aug-03 23:24

Picky, picky...;)

I meant does it handle dates/times in the format commonly found in XML files, namely YYYY-MM-DD[Thh:mm:ss[.9999999[+/-hh:mm]]] (where the T may be replaced by a space), of course. This is often specified in schemas, such as GML as used by the UK's Ordnance Survey organisation. That's of particular interest to me, since I'm currently working for a company which writes GIS, mapping and location management systems.

The answer is no, in a single call, which is what I was trying to clarify, so thanks.

Steve S

Using PBS_SMOOTH

keegan13-Aug-03 4:24

keegan

13-Aug-03 4:24

I've tried a few different ways of using pbs_smooth for a progress control but when i do, i run into problems.

the first way i tried it is using progress_control.SendMessage(PBS_SMOOTE, x, x) but i don't know what to put in for x and x, so it crashed.

the second way i tried was by adding OnCreate() to my class, and adding

progress_control.Create(WS_CHILD|WS_VISIBLE|PBS_SMOOTH, CRect(10,10,200,30), pParentWnd, 1);

I foudn that at msdn. My problem with that is where does pParentWnd come from? I dont have any classes derived from CWnd, so i don't know of anything i can put in there. CDialog does not work Frown | :(

:-/

*.*
cin >> knowledge;

doh

keegan13-Aug-03 4:54

keegan

13-Aug-03 4:54

there's a way to do it in the resource editor, i shoulda known.

*.*
cin >> knowledge;

Re: Using PBS_SMOOTH

Ryan Binns13-Aug-03 5:03

Ryan Binns

13-Aug-03 5:03

progress_control.ModifyStyle(0, PBS_SMOOTH);

keegan wrote:
where does pParentWnd come from?

The parent of the progress control, usually a pointer to your dialog. In this case, you'd probably do

progress_control.Create(WS_CHILD|WS_VISIBLE|PBS_SMOOTH, CRect(10,10,200,30), this, 1);

Hope this helps,

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Changing pixel color on a bitmap

vcplusplus13-Aug-03 4:23

vcplusplus

13-Aug-03 4:23

I have a button on my CFormView with a bitmap. How can I change the color of each individual pixel in the bitmap?

Re: Changing pixel color on a bitmap

Ryan Binns13-Aug-03 5:05

Ryan Binns

13-Aug-03 5:05

dwccgc wrote:
How can I change the color of each individual pixel in the bitmap?

Select it into a device context and use SetPixel() or SetPixelV(), the latter being the fastest.

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Re: Changing pixel color on a bitmap

vcplusplus13-Aug-03 6:40

vcplusplus

13-Aug-03 6:40

I need to get the current color before I use SetPixel(..), but I
cannot get GetPixel() to work. pDc->GetPixel() returns -1.

Maybe I am missing something.

Note:
m_ExitButtonCtrl is of type CButton.
hbmButtonExit is of type HBITMAP.

void CMyFormView::OnInitialUpdate() 
{
   CFormView::OnInitialUpdate();

    // Load BitMap
    hbmButtonExit = ::LoadBitmap(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDB_BUTTON_EXIT));
    if (hbmButtonExit != NULL)
    {
       m_ExitButtonCtrl.SetBitmap(hbmButtonExit);
       CDC *pDc = m_ExitButtonCtrl.GetDC();
       if (pDc != NULL)
       {
           for (INT nX = 0; nX < 69; nX++)
           {
               for (INT nY = 0; nY < 47; nY++)
               {
                  COLORREF OrgColor = pDc->GetPixel(nX, nY);
               }
           }
       }
    }
    return;
}

Re: Changing pixel color on a bitmap

Ryan Binns14-Aug-03 0:09

Ryan Binns

14-Aug-03 0:09

You need to select the bitmap into a device context.

void CMyFormView::OnInitialUpdate()
{
    CFormView::OnInitialUpdate();
    hbmButtonExit = ::LoadBitmap(AfxGetInstanceHandle(), MAKEINTRESOURCE(IDB_BUTTON_EXIT));
    if (hbmButtonExit != NULL)
    {
        CClientDC dc(this);
        CDC memDC;
        memDC.CreateCompatibleDC(&dc);
        CBitmap *pBitmap = memDC.SelectObject(CBitmap::FromHandle(hbmButtonExit));
        for (INT nX = 0; nX < 69; nX++)
        {
            for (INT nY = 0; nY < 47; nY++)
            {
                COLORREF OrgColor = memDC.GetPixel(nX, nY);
                // Do whatever else here
            }
        }
        memDC.SelectObject(pBitmap);
        m_ExitButtonCtrl.SetBitmap(hbmButtonExit);
    }
}

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Re: Changing pixel color on a bitmap

vcplusplus14-Aug-03 2:37

vcplusplus

14-Aug-03 2:37

Thanks for the help. Smile | :)

Re: Changing pixel color on a bitmap

Ryan Binns14-Aug-03 3:10

Ryan Binns

14-Aug-03 3:10

You're welcome Smile | :)

Ryan

"Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"

Unresolved external symbol...

Florin Ochiana13-Aug-03 3:35

Florin Ochiana

13-Aug-03 3:35

Hi,

I want to user the function GetFileVersionInfo (and GetFileVersionInfoSize) in my app to get the version of a dll. My app is a MFC app. When I compile it I get an error:

unresolved external symbol _GetFileVersionInfoSize@8 referenced in function *public: __thiscall....

What is wrong? What do I have to do?

Thanks

-----
We are what we repeatedly do. Excellence, then, is not an act, but a habit.

Re: Unresolved external symbol...

Serge Krynine13-Aug-03 3:50

Serge Krynine

13-Aug-03 3:50

Have you linked the Version.lib library ?

Re: Unresolved external symbol...

Florin Ochiana13-Aug-03 4:29

Florin Ochiana

13-Aug-03 4:29

Nope. Just did it right now and it works. Thanks!

-----
We are what we repeatedly do. Excellence, then, is not an act, but a habit.

XcvData and adding a standard IP port

Navin13-Aug-03 3:29

Navin

13-Aug-03 3:29

It's amazing how little information on this there is out there. But any way, I'm just trying to create a standard IP port. I'm using Windows XP, I assume this code would behave the same on 2000 but haven't tried it.

I have looked at MSDN and tried to follow the documentation, but it is either incomplete or incorrect, or I'm just doing something wrong. Here is how I'm trying to create a new port.

The problem is that XcvData always fails and GetLastError returns 87 (invalid parameter.) I have no idea which parameter might be invalid, or why. I have also tried deleting a port, similarly following the documentation, and it fails as well. What's going on?

void AddMeAPort()
{
  HANDLE hXcv = INVALID_HANDLE_VALUE;
  PRINTER_DEFAULTS Defaults = {NULL, NULL, SERVER_ACCESS_ADMINISTER};

  PORT_DATA_1 info;
  ::ZeroMemory(&info, sizeof(PORT_DATA_1));
  DWORD error = 0;

  _tcscpy(info.sztPortName, _T("MyPort"));
  info.dwVersion = 1;
  info.dwProtocol = PROTOCOL_RAWTCP_TYPE;
  info.cbSize = sizeof(PORT_DATA_1);
  _tcscpy(info.sztHostAddress, _T("some.host.name"));
// Note: I added the following 4 to see if they had any effect,
// but it still fails.  Originally I just left these all blank.
  _tcscpy(info.sztSNMPCommunity, _T("public"));
  info.dwPortNumber = 9100;
  info.dwSNMPEnabled = 1;
  info.dwSNMPDevIndex = 1;

  if(::OpenPrinter(_T(",XcvMonitor Standard TCP/IP Port"), &hXcv, &Defaults))
  {
    BYTE *hackedData = reinterpret_cast<BYTE *>(&info);
    DWORD status = 0;

    if(::XcvData(hXcv, L"AddPort", hackedData, sizeof(PORT_DATA_1), NULL, 0, NULL, &status))
    {
      // yay!
    } else
    {
      error = ::GetLastError();
    }
    ::ClosePrinter(hXcv);
  } else
  {
    error = ::GetLastError();
  }
}

"When a man sits with a pretty girl for an hour, it seems like a minute. But let him sit on a hot stove for a minute and it's longer than any hour. That's relativity." - Albert Einstein

Re: XcvData and adding a standard IP port

Navin13-Aug-03 5:34

Navin

13-Aug-03 5:34

Well, I figured it out on my own... the documentation is misleading. It says you can pass NULL to the second-to-last parameter for XcvData, but that's wrong, you need to pass in a pointer to a DWORD. Go figure.

"When a man sits with a pretty girl for an hour, it seems like a minute. But let him sit on a hot stove for a minute and it's longer than any hour. That's relativity." - Albert Einstein

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