Re: WM_PRINT - C / C++ / MFC Discussion Boards

Re: Adding status bar in a dialog

bulg9-Jun-08 12:59

bulg

9-Jun-08 12:59

Did you get this resolved? (I just implemented it in about 5 minutes w/ that article)

Re: Adding status bar in a dialog

KASR19-Jun-08 17:58

KASR1

9-Jun-08 17:58

Yes.I have done this.

problem with VC++ and sql version

tasumisra8-Jun-08 23:53

tasumisra

8-Jun-08 23:53

Hi all,
From VC++ code i am calling a stored procedure that is updating some fields in the data base

the code is working fine for sql2k but throwing following exception for 2k5

Error Message: Multiple-step operation generated errors. Check each status value.
Failed to update column XYZ with value: 1
Column Attributes for Receive_Status: [Field accepts null values][Null values can be read from the field][Field contains fixed-length data]
Field Status for Receive_Status: [Value violated the data source schema constraint for the field]

Please help me here ...

am having a suspect on a variable of stored proc that is used as tinyint ...

please help me here ...

Thanks

vikas da

Re: problem with VC++ and sql version

Mark Salsbery9-Jun-08 6:24

Mark Salsbery

9-Jun-08 6:24

tasumisra wrote:
Value violated the data source schema constraint for the field

What are the constraints for the column in qustion?

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: problem with VC++ and sql version

tasumisra9-Jun-08 18:05

tasumisra

9-Jun-08 18:05

the onstraints are value for the column xyz cant be null..

vikas da

Re: problem with VC++ and sql version

Mark Salsbery10-Jun-08 5:26

Mark Salsbery

10-Jun-08 5:26

Without the schema and the stored procedure it's harder to guess.

Can you post a small example that duplicates the problem?

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

WM_PRINT

subramanyeswari8-Jun-08 23:53

subramanyeswari

8-Jun-08 23:53

I am calling WM_PRINT to print the control. It is drawing the control but Client area of window is blank. This is my code
LRESULT lRes = InTouch.SendMessage(WM_PRINT,(LPARAM)hDC, PRF_CLIENT | PRF_CHILDREN | PRF_OWNED|PRF_NONCLIENT);

where InTouch is a CWnd parameter.

Any help is appreciated

Regards, Eswari

Re: WM_PRINT

Naveen9-Jun-08 0:16

Naveen

9-Jun-08 0:16

subramanyeswari wrote:
It is drawing the control but Client area of window is blank

you mean black?How did you create the DC and bitmap?

also did you try PrintWindow() function?

nave

[OpenedFileFinder]

Re: WM_PRINT [modified]

subramanyeswari9-Jun-08 0:37

subramanyeswari

9-Jun-08 0:37

I did not create dc and bitmap. Because that did not work. I wrote a function in which i am drawing the control and calling the sendmessage with WM_PRINT. it is drawing the control and scrool bars but the remaining portion is coming as blank.

I refer this link.
http://www.fengyuan.com/article/wmprint.html

in that article he clearly mentioned that If you send a WM_PRINT message to a window, normally all the non-client area, which includes border, title bar, menu bar, scroll bar, etc., and common controls are drawn properly. Client area of windows implemented by application programs are normally left blank.

and he gave the solution to implement WM_PRINTCLIENT. how to implement that in my control which is derived from CObject

Regards

modified on Monday, June 9, 2008 6:46 AM

How to disable "Show window content while dragging" style to my CDialog Window

Nyil8-Jun-08 23:47

Nyil

8-Jun-08 23:47

Dear all,

how to switch off the "Show window content while dragging" to my window.?
is there any window style ?.

if there is no way how can i implement the style with coding. ?

thanks in advance

Re: How to disable "Show window content while dragging" style to my CDialog Window

sudhir_Kumar8-Jun-08 23:55

sudhir_Kumar

8-Jun-08 23:55

Try
::SystemParametersInfo with SPI_SETDRAGFULLWINDOWS parameter.

-@SuDhIrKuMaR@-

Re: How to disable "Show window content while dragging" style to my CDialog Window

James R. Twine9-Jun-08 1:08

James R. Twine

9-Jun-08 1:08

The SPI setting will turn it off for more than just your own window, and changing a user's setting on them is A Bad Thing, so Do Not Do That. Smile | :)

   I have had to do this before and IIRC, I had to handle the WM_MOVING, WM_SIZING, WM_MOVE and WM_SIZE messages. You have to keep handling the WM_MOVE and WM_SIZE messages because (again, IIRC), the OS keeps sending those messages while the window is being moved/sized which is why that feature works without application support.

   You may need to check to see if the user has the mouse button down or up to determine which set of messages is the "final" message.

   If the user is moving/sizing by the keyboard... Well, I did not handle that...

   Peace!

-=- James
Please rate this message - let me know if I helped or not!<hr></hr>If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
Remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
See DeleteFXPFiles

Re: How to disable "Show window content while dragging" style to my CDialog Window

Nyil14-Jul-08 1:32

Nyil

14-Jul-08 1:32

this is based on Registry Setting ( Afect all windows). If the user has no right to change system settings then how it works.. ?

Communication between TreeView and FormView

Maxim Zarus8-Jun-08 23:31

Maxim Zarus

8-Jun-08 23:31

In my SDI application, I have two views, Treeview and FormView.
I placed Edit control on FormView. I have to change value of Edit control by clicking on Tree. Both are different classes.
But I am unable to access FormView Class members from Treeview. How can I do that?

void CLeftView::OnTvnSelchanged(NMHDR *pNMHDR, LRESULT *pResult)
{
  //some code
  CRightView *rView = new CRightView();
  if(rView!=NULL)
  {
	rView->m_Edit1.SetWindowText(_T("ok"));
  }
}

Code gives Debug Assertion Error.

Re: Communication between TreeView and FormView

Paresh Chitte8-Jun-08 23:37

Paresh Chitte

8-Jun-08 23:37

Will CDocument::UpdateAllViews will help you ?

http://msdn.microsoft.com/en-us/library/eys41xfw(VS.80).aspx[^]

Also look at the example given below,

http://msdn.microsoft.com/en-us/library/ysfkkk2h(VS.80).aspx[^]

Regards,
Paresh.

Re: Communication between TreeView and FormView

sudhir_Kumar8-Jun-08 23:48

sudhir_Kumar

8-Jun-08 23:48

You are creating new View object CRightView *rView = new CRightView();.Instead of this you should get the the attached View object.

-@SuDhIrKuMaR@-

Re: Communication between TreeView and FormView

Maxim Zarus9-Jun-08 0:02

Maxim Zarus

9-Jun-08 0:02

Sir, I am very confused.
Please give me some example.
How do I create attached view object?

Re: Communication between TreeView and FormView

sudhir_Kumar9-Jun-08 0:18

sudhir_Kumar

9-Jun-08 0:18

Try to run this code.
CFrameWnd * pFrame = (CFrameWnd *)(AfxGetApp()->m_pMainWnd);
CView* pFrmView = pFrame->GetActiveView ();

CRightView *rView = NULL;

if (pFrmView->IsKindOf (RUNTIME_CLASS (CRightView)))
rView = (CRightView *)pFrmView;

(Your Doc Class Name) * pDoc = GetDocument()

if(rView == NULL)
{
POSITION pos = pDoc->GetFirstViewPosition();
while (pos)
{
CView* pView = GetNextView (pos);
if (pView->IsKindOf (RUNTIME_CLASS (CFormView)))
{
rView = (CRightView *)pFrmView;
}
}
}

if(rView!=NULL)
{
rView->m_Edit1.SetWindowText(_T("ok"));
}

-@SuDhIrKuMaR@-

Re: Communication between TreeView and FormView

Maxim Zarus9-Jun-08 0:42

Maxim Zarus

9-Jun-08 0:42

Now, i get this error:
Unhandled exception at 0x00530a33 in MyPrg.exe: 0xC0000005: Access violation reading location 0x1271e40a.
and control goes to:

void CWnd::SetWindowText(LPCTSTR lpszString)
{
	ENSURE(this);
	ENSURE(::IsWindow(m_hWnd) || (m_pCtrlSite != NULL));

	if (m_pCtrlSite == NULL)
		::SetWindowText(m_hWnd, lpszString);
	else
		m_pCtrlSite->SetWindowText(lpszString);// control points here
}

Problem with variables

pl_kode8-Jun-08 23:18

pl_kode

8-Jun-08 23:18

I had posted this earlier but no reply. Sorry for posting it again

This is how it is...

My Class is defined in newclass.h as...

Class A
{
public:
    	void out_func1();  
	void out_func2();  
  class B 	
  {   
  public:  
 	  string path;  
  	  in_func1();  
 };
};

I then Get the path at intialize.cpp as follows....

void A::out_func1()
{
 B obj;	
 obj.path="c:\folder\file1.txt";
}

Then I try to open the file to write in write.cpp...

void A::out_func2()
{	
 B obj;	
 ofstream myfile;
 myfile.open (obj.path.c_str(), ios::app);
...
}

This crashes.I have included the header initialise.h too.
Please let me know were I could have gone wrong. I think I am having problem with the scope of the varible. But I am not sure.

THANKS.

Re: Problem with variables

Naveen8-Jun-08 23:24

Naveen

8-Jun-08 23:24

out_func1() and out_func2() uses different instance of the class B. You should use same instance of class B in both functions.

nave

[OpenedFileFinder]

Re: Problem with variables

CPallini8-Jun-08 23:24

CPallini

8-Jun-08 23:24

Actually you got replies.
I repeat myself: no wonder your application crashes, you're passing a uninitialized path to myfile.open.

Hint: usage of locals where class member (or method parameter) should be used.
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

Re: Problem with variables

_AnsHUMAN_ 8-Jun-08 23:26

_AnsHUMAN_

8-Jun-08 23:26

Where do you initialize the variable obj? That kept aside you don't call out_func1 that is initializign the obj variable. Initialize and use the same variables.

Somethings seem HARD to do, until we know how to do them.
Wink | ;-)

_AnShUmAn_

Re: Problem with variables

Paresh Chitte8-Jun-08 23:27

Paresh Chitte

8-Jun-08 23:27

pl_kode wrote:
obj.path="c:\folder\file1.txt";

Use below code,

obj.path="c:\\folder\\file1.txt";

Regards,
Paresh.

Re: Problem with variables

David Crow9-Jun-08 7:08

David Crow

9-Jun-08 7:08

pl_kode wrote:
myfile.open (obj.path.c_str(), ios::app);

obj has not been initialized.

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