Trying to Display HWND as String - C / C++ / MFC Discussion Boards

Christopher Stratmann3-Jul-06 5:32

3-Jul-06 5:32

Thanks for the response. I have researched report_error and found tried using it. I am having trouble finding examples on how to use it and what it does exactly. I am guessing it displays a message to the user? I found 1 example searching on google http://webkemper1.informatik.tu-muenchen.de:8080/interna/db2/en_US/index.htm?openup=ad/t0009587.htm[^]. It is not a very good example because I took that same code and placed it into my project and I get and error stating "Unhandled exception in qadocm.exe (DB2QG.dll): 0xC00..005: Access Violation.

Chris

Problem in CSocket

zahid_ash3-Jul-06 0:34

zahid_ash

3-Jul-06 0:34

HI,

I have delevoped a Client Server multithreaded application using CSocket, I am getting Socket Notification Sink error.

Wht iy is ? How can remove this ?

Thanks

Regards.

Re: Problem in CSocket

Ganesh_T3-Jul-06 2:29

Ganesh_T

3-Jul-06 2:29

look Here[^]

"A winner is not one who never fails...but the one who never quits"

Visual C++

tamasan3-Jul-06 0:16

tamasan

3-Jul-06 0:16

How does I use .jar lib in visual C++

Re: Visual C++

_AnsHUMAN_ 3-Jul-06 0:20

_AnsHUMAN_

3-Jul-06 0:20

Why do you really want to use the java library in C++?
AFAIK , You will need to host the JVM for that ..

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

_AnShUmAn_

Re: Visual C++

Benoy Bose3-Jul-06 1:27

Benoy Bose

3-Jul-06 1:27

You can run jar file if and only if you are hosted JVM. But you can open, view, read and modify the Jar file from VC++ since Jar file has the same file format as ZIP file.

http://www.artpol-software.com/index_zip.html
Here is library which can be used for accessing zip archives.

Benoy Bose

Re: Visual C++ [modified]

Niklas L3-Jul-06 3:22

Niklas L

3-Jul-06 3:22

You might want to have a look at Java Native Interface, JNI, found here: JNI

-- modified at 9:22 Monday 3rd July, 2006
fogot to add the link Blush | :O

Trying to Display HWND as String

redfish342-Jul-06 23:37

redfish34

2-Jul-06 23:37

I am a beginner. I am trying to display the HWND when i use certain Win32 functions such as GetForegroundWindow() for debugging purposes. When i use MessageBox or OutputDebugString such as below...

m_foreHwnd1 = GetForegroundWindow();
MessageBox(NULL, (LPCSTR)m_foreHwnd1, "INFO", MB_OK);

OutputDebugString("ForeHwnd1: ");
OutputDebugString((LPCSTR)m_foreHwnd1);
OutputDebugString("\n");

... I get errors like the following:

First-chance exception at 0x77e26673 in SendFocusWin.exe: 0xC0000005: Access violation reading location 0x00090548.
Unhandled exception at 0x77e26673 in SendFocusWin.exe: 0xC0000005: Access violation reading location 0x00090548.

Can i display the HWND so i can see what the heck is going on in my code? What is the How To?

Re: Trying to Display HWND as String

Justin Tay2-Jul-06 23:58

Justin Tay

2-Jul-06 23:58

First thing you need to learn is that you do not cast things without knowing exactly what you are doing as you can shoot yourself in the foot, like what you have done here.

m_foreHwnd1 = GetForegroundWindow();
CString szMessage;
szMessage.Format(_T("ForeHwnd1: 0x%08X\r\n"), m_foreHwnd1);
OutputDebugString(szMessage);

Re: Trying to Display HWND as String

see me2-Jul-06 23:58

see me

2-Jul-06 23:58

Did you try Format function of CString

else try this

CString strHwnd;
strHwnd.Format(_T("Handle is: %d\n"), m_foreHwnd1);
OutputDebugString(strHwnd);

"Dream bigger...Do bigger...Expect smaller"
aji

Re: Trying to Display HWND as String

Abhi Lahare3-Jul-06 0:04

Abhi Lahare

3-Jul-06 0:04

GetForegroundWindow() API will return handle to active window with which user is interacting, so in debugging mode you constantly switch between your app and debug window. so its difficult to know window handle.

Not sure what are you trying to do, but try this to display window handle in output window.

CString str;<br />
str.Format("%x",m_foreHwnd1);<br />
OutputDebugString(str);

Hope this helps

Re: Trying to Display HWND as String

see me3-Jul-06 0:19

see me

3-Jul-06 0:19

If u r able to solve ur problem with our answers then please tel it so that we get some confidence

"Dream bigger...Do bigger...Expect smaller"
aji

Wrong Forum

redfish343-Jul-06 23:03

redfish34

3-Jul-06 23:03

I think i posted on the wrong forum. I now see that there is a forum that supports STL questions, which i think would help come up with a ANSI version of the solution you folks provided. Sorry. But thanks for the excellent response!

plz Tell me

ashish dogra2-Jul-06 23:34

ashish dogra

2-Jul-06 23:34

HI PLZ TELL ME HOW TO CREATE SPLIT WINDOW IN MFC(SDI)
I CREATE IT BUT IT DOES NOT WORK
I ALREADY PUT MY QUESTION BUT NOBODY SOLVE MY PROBLEM
PLZ SOLVE BY GIVING EXAMPLE

Ashish Dogra
MCA
Noida

Re: plz Tell me

_AnsHUMAN_ 2-Jul-06 23:44

_AnsHUMAN_

2-Jul-06 23:44

If you really want to split a window and know how it is done a simple way is to Create a new MFC Application and in the fourth or Fifth step(I don't remember exactly) you can choose for Window Explorer view instead of MFC View.
In this way you will be able to see a window split in two parts just like the explorer.
If you want to see the code open the mainframe.cpp file and there you can study
OnCreateClient function

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

_AnShUmAn_

Re: plz Tell me

ashish dogra3-Jul-06 0:02

ashish dogra

3-Jul-06 0:02

thanks sir
but i want to split it into four or more panes and also add scroll bars for each window.
plz tell me sir

Ashish Dogra
MCA
Noida

Re: plz Tell me

_AnsHUMAN_ 3-Jul-06 0:05

_AnsHUMAN_

3-Jul-06 0:05

You just have to get with that in the same manner as in my previous post.Just pass the number of partitions you create to CreateStatic and that number of classes that are derived from CView will help.

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

_AnShUmAn_

Re: plz Tell me

Abhi Lahare3-Jul-06 0:12

Abhi Lahare

3-Jul-06 0:12

try this:

BOOL CMainFrame::OnCreateClient(LPCREATESTRUCT lpcs, CCreateContext* pContext)<br />
{<br />
// TODO: Add your specialized code here and/or call the base class<br />
BOOL res = m_splilter.CreateStatic(this,2,1);<br />
m_splilter.CreateView(0,0,RUNTIME_CLASS(CsplView),CSize(0, 200), pContext);<br />
m_splilter.CreateView(1,0,RUNTIME_CLASS(COtherView),CSize(200, 200), pContext);<br />
return TRUE;<br />
}

Where CsplView is a default view class generated by Wizard
and COtherView is class derived from Cview.

Hope these help.

Listbox Scrollbar issue

Sarath C2-Jul-06 23:32

Sarath C

2-Jul-06 23:32

Can we subclass scrollbar of an listbox or combobox into a custom one?

SaRath.

"It is your attitude, not your aptitude, that determines your altitude - Zig Ziglar."
My Blog | Understanding State Pattern in C++

Changing Active View

_Tom_2-Jul-06 23:27

_Tom_

2-Jul-06 23:27

Dear All,

I have a MDI application and I'm currently trying to programmatically change the active view.

So in sort I have a combo box on my toolbar which list the views currently open.

When I select a different view in this combobox I want that view to come into focus. Basically it should do exactly the same as selecting the view from the 'Window' main menu option.

I have tried sending the WM_MDIACTIVATE message to the main frame but this doesn't seem to work.

Any suggestions would be gratefully received.

Many thanks

Tom

Re: Changing Active View

Viorel.2-Jul-06 23:38

Viorel.

2-Jul-06 23:38

I would suggest you the MDIActivate member of CMDIFrameWnd class.

I hope it works.

Re: Changing Active View

_Tom_3-Jul-06 0:59

_Tom_

3-Jul-06 0:59

Hi

Thanks for the suggestion of using MDIActivate, unfortunately this doesn't seem to do trick when I call the following:

pMainFrm->MDIActivate((CWnd*)pView);

Where pView is a pointer to the view I want to activate and bring to the front of all other view windows.

I was wondering if I should be casting here and whether I had used the function correctly.

Thanks

Tom

Re: Changing Active View

Viorel.3-Jul-06 1:26

Viorel.

3-Jul-06 1:26

I suppose the parameter of MDIActivate should be a frame window (CMDIChildWnd) which contains your view.

Try this:

CWnd * p = pView->GetParent();
ASSERT_KINDOF(CMDIChildWnd, p);
pMainFrm->MDIActivate(p);

Re: Changing Active View [modified]

Cliff Hatch3-Jul-06 11:36

Cliff Hatch

3-Jul-06 11:36

I wrote the following procedure to activate views programatically. It's a bit specialised, but I hope it might give you some useful clues. The bit underneath the comment "//There is already a View displaying this parent..." activates the view pointed to by pView.

CKernelView* CMainFrame::ActivateView(CModel* pParentModel)
{
	//Activate new or existing view containing pParentModel

	CKernelView *pView, *pActiveView;
	CWnd* pBar;
	CMDIFrameWnd *pFrame;
	CMDIChildWnd *pChild;

	pBar = GetDlgItem(IDD_NAVIGATOR_BAR);

	//Get a pointer to the active view (there are three stages to this)
	pFrame = (CMDIFrameWnd*)AfxGetApp()->m_pMainWnd;		//Get a pointer to the active MDI window
	pChild = (CMDIChildWnd *) pFrame->GetActiveFrame();		//Get the active MDI child window.
	pActiveView = (CKernelView*)pChild->GetActiveView();	//Get the View attached to the active MDI child window

	if (pActiveView->m_pParentModel == pParentModel)
		pView = pActiveView;	//The required parent model is already in the active view
	else if (pParentModel->m_pShadow != NULL)
	{
		//There is already a View displaying this parent, activate its frame
		pView = pParentModel->m_pShadow->m_pView;
		pFrame = (CMDIFrameWnd*)pView->GetParentFrame();
		pFrame->ActivateFrame(SW_RESTORE);
	}
	else if (pBar->IsDlgButtonChecked(IDC_TRACK_NEW))
		pView = pParentModel->OpenView(m_pDocViewed, pParentModel->m_PlantFlag);	//Open new window
	else
	{
		//Reuse current window
		pView = pActiveView;
		pView->ChangeModel(pParentModel);	
	}

	return pView;
}

Best Regards

Cliff

-- modified at 17:36 Monday 3rd July, 2006

Urgent :- How to read the unicode file with C/C++

Rocky Marrone2-Jul-06 23:26

Rocky Marrone

2-Jul-06 23:26

Hi guys i got stuk in a problem........
i want to read the unicode file with C/C++......

thnx in advance

here is the piece of code

FILE* fp = NULL;
wchar_t* buf = (wchar_t*)malloc(sizeof(wchar_t) * 200);
wchar_t* retbuf = NULL;

if ((fp = fopen("d:/GRCasual.txt", "r")) == NULL) // opens the file
{
return 0;
}

while(!feof(fp))
{
/*fseek(fp,sizeof(char),SEEK_CUR); */
retbuf = fgetws(buf, 200, fp);
}

if( fp )
fclose(fp);

return 0;

Best Rgards
Rocky

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