C / C++ / MFC

Re: write to console or output

15-Apr-08 17:02

duta wrote:
error LNK2019: unresolved external symbol _main...

So do you have a main() function?

"Love people and use things, not love things and use people." - Unknown

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

duta15-Apr-08 7:52

duta

15-Apr-08 7:52

it's about a GUI using MFC.

I'm new in the field and I wish to learn. I need so see/write some variables but without using a label.

Re: write to console or output

duta15-Apr-08 8:04

duta

15-Apr-08 8:04

I find it. It's about TRACE()

I'm new and main problem is because I don't know how to use MSDN efficiently.

Has anybody used CMacProgressCtrl?

megha_gharote15-Apr-08 7:09

megha_gharote

15-Apr-08 7:09

Dear Friends,
I need a progress bar which should have two values. Target and Actual. both values should be drawn on the same ctrl.
Like below

........Actual......[Target]

I already have used CMacProgressCtrl to display one value. Now i have to change it. can anybody help me out.

Re: Has anybody used CMacProgressCtrl?

David Crow15-Apr-08 7:26

Command line arguments passed to another application

15-Apr-08 7:26

A very easy solution is to put a static control right above your progress control that indicates what 100% is. If you want to actually write on the progress control, however, you'll need to look at creating your own. Source code is plentiful, here for example.

"Love people and use things, not love things and use people." - Unknown

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

Eikthrynir15-Apr-08 6:23

Eikthrynir

15-Apr-08 6:23

Hello!

I have a Win32 application and I would like to retrieve the command line arguments passed to another application. I'm actually trying to get the command line arguments used to start each instance of svchost.exe.

Is there an API for this or do I have to implement a complex machanism? I thought of OpenProcess and different "query process information" functions after that but I could not find any solution... Can anyone help?

Thanks in advance!

Re: Command line arguments passed to another application

David Crow15-Apr-08 7:29

_free, _malloc already defined in libc.lib

15-Apr-08 7:29

Here is one example.

"Love people and use things, not love things and use people." - Unknown

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

ns15-Apr-08 4:33

15-Apr-08 4:33

Getting these compile errors

Linking...
MSVCRTD.lib(MSVCRTD.dll) : error LNK2005: _free already defined in libc.lib(free.obj)
MSVCRTD.lib(MSVCRTD.dll) : error LNK2005: _malloc already defined in libc.lib(malloc.obj)

I typed in NODEFAULTLIB:library

based on this warning

defaultlib "MSVCRTD" conflicts with use of other libs; use /NODEFAULTLIB:library

but it didnt resolve the problem.
thanks,
sb

Re: _free, _malloc already defined in libc.lib

Cedric Moonen15-Apr-08 4:47

Cedric Moonen

15-Apr-08 4:47

Did you try google[^] ? There's a lot of similar questions...

Check also MSDN[^] (although it might be a bit different).

Cédric Moonen
Software developer

Charting control [v1.3]

Re: _free, _malloc already defined in libc.lib

toxcct15-Apr-08 5:05

toxcct

15-Apr-08 5:05

I suspect it's because free() and malloc() are already defined in libc.lib... Poke tongue | ;-P

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How to update a view from toolbar in the right way !

CrocodileBuck15-Apr-08 4:33

Re: How to update a view from toolbar in the right way !

15-Apr-08 4:33

Hi,

i have got the following questin:
I have a SDI Project with a RichTextControl and an editbox in the toolbar.

I want to pass the value in the editboc(user input) to a funktion in the document.cpp.
I want to load some data in the document and then i want to update te view with this datas.
I know how to update the view with datas coming fram the document, but i don't know the right way to pass a value from the editbox in my toolbar to the document !!!???

Here is some code :

BOOL NEW_cToolBar::PreTranslateMessage(MSG* pMsg)
{
	if (pMsg->message == WM_KEYDOWN && VK_RETURN == pMsg->wParam) 
    {
        return TRUE;
    }
    else if (pMsg->message == WM_KEYUP && VK_RETURN == pMsg->wParam) 
    {	
		
		CString chrBuf;
		m_Ctrl_EDIT.GetWindowText(chrBuf); //<-- The Value
	// 	MessageBox(chrBuf, chrBuf ,MB_OK);


		//((CMainFrame*)AfxGetMainWnd())->GetActiveView()->GetDocument()->UpdateAllViews(NULL);

        return TRUE;
    }
	return false;
}

void CApplicationView::OnUpdate(CView* pSender, LPARAM lHint, CObject* pHint) 
{
	CTheReaderDoc	 *pDoc	= GetDocument ();
	CRichEditCtrl	 &rCtrl = GetRichEditCtrl();			
	rCtrl.SetWindowText (pDoc->m_cstrAusgabe);
	
		
	
	rCtrl.SetFont(pDoc->m_ptrFont);
	rCtrl.SetModify(TRUE);		
	
}

Or is it better to pass the Value directly to the View without using a document ? Confused | :confused:

And when yes, how can I do that ?

Please help me !

Many thanx
Croc

Iain Clarke, Warrior Programmer15-Apr-08 5:28

Iain Clarke, Warrior Programmer

15-Apr-08 5:28

You have loads of ways to do this, really, depending on your application.

What it looks like you should do is have a function in your document, eg:?

BOOL CMyDoc::UpdateSomeTextField (CString s)
{
    if ( !some validation here )
         return FALSE;

    m_KeepString = s;
    UpdateAllViews (NULL);
    return TRUE;
}

and in your PreTranslateMessage function, call this member function. This will decouple your document from the toolbar, and remove the view from the equation.

Also, CFrameWnd has a function GetActiveDocument which will be a bit safer for you - and may make it easier when you move to an MDI model (if you choose).

Iain.

Iain Clarke appears because ^CPallini still cares.

Re: How to update a view from toolbar in the right way !

CrocodileBuck15-Apr-08 7:14

Re: How to update a view from toolbar in the right way !

15-Apr-08 7:14

Hi Mr.Clarke,

thank you very much for your reply.

I added this to the document.h:


.
.
.
.
public:
	CString	m_KeepString;

public:
	BOOL bUpdatetextField(CString);

And this in the document.cpp:


BOOL CDocumentDoc::bUpdatetextField(CString s)
{
	m_KeepString = s;
	UpdateAllViews(NULL);

	return TRUE;
}

But how can I call the bUpdatetextFiled from my toolbar :


BOOL New_cToolBar::PreTranslateMessage(MSG* pMsg)
{
	if (pMsg->message == WM_KEYDOWN && VK_RETURN == pMsg->wParam) 
    {
        return TRUE;
    }
    else if (pMsg->message == WM_KEYUP && VK_RETURN == pMsg->wParam) 
    {	
		
	????????? function call ???????????

	// ((CMainFrame*)AfxGetMainWnd())->GetActiveView()->GetDocument();

	
        return TRUE;
    }
	return false;
}

Many many thx
best regards croc

CrocodileBuck15-Apr-08 8:41

Re: How to update a view from toolbar in the right way !

15-Apr-08 8:41

;

is there really no hope Confused | :confused:

best regards
CrocodileBuck

Iain Clarke, Warrior Programmer15-Apr-08 10:46

Iain Clarke, Warrior Programmer

15-Apr-08 10:46

Err, some of us go home, and have a life...

Try:

CMainFrame *pMF = STATIC_DOWNCAST(CMainFrame, AfxGetMainFrame ());
CMyDoc *pDoc = STATIC_DOWNCAST(CMyDoc, pMF->GetActiveDocument ());
pDoc->UpdateMyField (s);

And check the debugger as you go, as this is from memory.

Iain.

Iain Clarke appears because ^CPallini still cares.

Re: How to update a view from toolbar in the right way !

CrocodileBuck16-Apr-08 5:34

running program across PCs

16-Apr-08 5:34

Hi Mr.Clarke,

>> Err, some of us go home, and have a life... Cool | :cool:

L*O*L yeah that's absolutely corect Wink | ;)

Many, many, many thanx, now it will work ... Cool | :cool:

Thanx for your great help
very best regards
Croc

P.S.: Instead of AfxGetMainFrame() i have to use AfxGetMainWnd() Wink | ;)

koumodaki15-Apr-08 4:16

koumodaki

15-Apr-08 4:16

I have written a program that enumetares a USB devices connected to a PC and obtains all the interface strings. I am using SetupDI APIs
I compile the program on PC1 and everything works fine.
When I copy the executable of my program [along with all files in release dir] to a different PC, say PC2 and execute it, the program does not return any USB interface strings.
But when I compile my program on the PC2 and run it, I get all the USB interface strings
Why does this happen?
The configurations of both the PCs are same.

Deploying C++ applications[^]

led mike15-Apr-08 4:25

led mike

15-Apr-08 4:25

led mike

David Crow15-Apr-08 7:31

15-Apr-08 7:31

How so, Mike? It sounds as though the second machine indeed has Visual Studio on it.

"Love people and use things, not love things and use people." - Unknown

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

led mike15-Apr-08 10:15

led mike

15-Apr-08 10:15

Just a wild guess, I really had no concrete ideas from reading his post. Should I not have done that?

led mike

David Crow15-Apr-08 10:35

15-Apr-08 10:35

More often than not, the answer to "Why won't my VC++ application run on a machine other than the one it was compiled on?" is either the reason you stated, or the application was mistakingly compiled in debug mode. However, he indicated that both machines had VS installed. I'm still baffled.

"Love people and use things, not love things and use people." - Unknown

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

led mike16-Apr-08 5:11

led mike

16-Apr-08 5:11

DavidCrow wrote:
he indicated that both machines had VS installed.

Not all installations of VS are equal, for example a Platform SDK difference. No reason to be baffled given the lack of information we have, this thread calls for a Beer | [beer]

led mike

David Crow16-Apr-08 5:16