C / C++ / MFC

Re: finishing writing symbol to stdin?

28-Feb-06 6:08

See these two articles:

http://support.microsoft.com/default.aspx?scid=kb;en-us;190351[^]

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/dllproc/base/creating_a_child_process_with_redirected_input_and_output.asp[^]

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

PJ Arends28-Feb-06 7:38

PJ Arends

28-Feb-06 7:38

CTRL Z is ASCII 26, you can enter it in your text literals using the octal notation \032

You may be right
I may be crazy
But it just may be a lunatic you’re looking for
-- Billy Joel --

Within you lies the power for good - Use it!

onSize of CDialog

ns28-Feb-06 4:48

28-Feb-06 4:48

Isn't the onSize() event supposed to fire when you resize a CDialog?

void CDlgMap0::OnSize(UINT nType, int cx, int cy) 
{
	MakePE();
	CDialog::OnSize(nType, cx, cy);
}

In my case the execution never steps into the function.

I have in the .h file, where I added it by hand

protected:

	// Generated message map functions
	//{{AFX_MSG(CDlgMap0)
		// NOTE: the ClassWizard will add member functions here
		afx_msg void OnSize(UINT nType, int cx, int cy);

	//}}AFX_MSG
	DECLARE_MESSAGE_MAP()

thanks,
sb

Re: onSize of CDialog

David Crow28-Feb-06 4:52

CEdit question (should be easy)

28-Feb-06 4:52

ns wrote:

In my case the execution never steps into the function.

How do you know?

What does CDlgMap0's BEGIN_MESSAGE_MAP() method look like?

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

Re: onSize of CDialog

ns28-Feb-06 5:01

28-Feb-06 5:01

The begin_mesage_map was empty. I've been away from MFC for 2 years (been using QT) . I see now I needed ON_WM_SIZE() in there. Thanks so much for the hint. It works now.
sb

RobJones28-Feb-06 4:22

28-Feb-06 4:22

Hey,
I have no idea why this isn't working but I am trying to simply toggle between ES_PASSWORD on a edit control with in a dialog. I have tried Get/SetWindowLong and ModifyStyle and neither seem to work... Here is a sniplet of my code.

What am I doing wrong?

void CActivationDlg::OnBnClickedCMask()
{
	UpdateData(TRUE);

	m_bMask = m_bMask ? TRUE : FALSE;

	DWORD dwStyle = GetWindowLong(m_cKey.GetSafeHwnd(), GWL_STYLE);

	if(!m_bMask) // Remove password mask
	{
		TRACE("Remove PW mask\n");
		
		dwStyle &= ~ES_PASSWORD;
		SetWindowLong(m_cKey.GetSafeHwnd(),
						GWL_STYLE,
						dwStyle);
	}
	else		// Add password mask
	{
		TRACE("Add PW mask\n");

		dwStyle |= ES_PASSWORD;
		SetWindowLong(m_cKey.GetSafeHwnd(),
						GWL_STYLE,
						dwStyle);
	}

	m_cKey.Invalidate();
	
	UpdateData(FALSE);
}

Thanks in advance!
Rob

Whoever said nothing's impossible never tried slamming a revolving door!

David Crow28-Feb-06 4:43

28-Feb-06 4:43

Are you sure the ES_PASSWORD style can be un/set at runtime? Some styles are unchangeable.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

RobJones28-Feb-06 4:49

28-Feb-06 4:49

You might be right... I did notice on MSDN that some of the other styles state if changes need to be made after creation use the SetWindowLong function, unfortunately it doesn't say anything about ES_PASSWORD, it probably can't be changed with ease...

DOH!

Thanks,

Rob

Whoever said nothing's impossible never tried slamming a revolving door!

David Crow28-Feb-06 4:50

28-Feb-06 4:50

Would it be feasible to create two of the same controls, one with the style and one without? Then at runtime you could just show/hide the appropriate control.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

RobJones28-Feb-06 6:37

28-Feb-06 6:37

Yeah I could have just done that... Instead I have removed the old control and created a new one. If anyone is interested this is the code. Most of this code is from the SuperPad MSDN example for changing word wrap...

void CActivationDlg::OnBnClickedCMask()
{
	UpdateData(TRUE);

	m_bMask = m_bMask ? TRUE : FALSE;

	// preserve original control's state.
	CFont* pFont = m_cKey.GetFont();
	int nLen = m_strKey.GetLength();
	TCHAR* pSaveText = new TCHAR[m_strKey.GetLength()+1];
	GetWindowText(pSaveText, nLen+1);

	DWORD dwStyle = GetWindowLong(m_cKey.GetSafeHwnd(), GWL_STYLE);

	if(!m_bMask) // Remove password mask
		dwStyle &= ~ES_PASSWORD;
	else		// Add password mask
        dwStyle |= ES_PASSWORD;

	// create new edit control with appropriate style and size.
	CActivationDlg* pParent = (CActivationDlg*)m_cKey.GetParent();
	
	CRect rect;
	m_cKey.GetWindowRect(rect);
	pParent->ScreenToClient(rect);

	UINT nID = m_cKey.GetDlgCtrlID();

	HWND hWnd = ::CreateWindowEx(WS_EX_CLIENTEDGE, _T("edit"), NULL, dwStyle,
		rect.left, rect.top, rect.right-rect.left, rect.bottom-rect.top,
		pParent->m_hWnd, (HMENU)nID, AfxGetInstanceHandle(), NULL);

	if (hWnd == NULL)
	{
		delete[] pSaveText;
		return;
	}

	// set the window text to nothing to make sure following set doesn't fail
	m_cKey.SetWindowText(NULL);

	// restore visual state
	::SetWindowText(hWnd, pSaveText);
	delete[] pSaveText;
	if (pFont != NULL)
	{
		ASSERT(pFont->m_hObject != NULL);
		::SendMessage(hWnd, WM_SETFONT, (WPARAM)pFont->m_hObject, 0);
	}

	// detach old window, attach new
	SetDlgCtrlID(nID+1);
	HWND hWndOld = m_cKey.Detach();
	::SetWindowLong(hWndOld, GWL_WNDPROC, (LONG)*GetSuperWndProcAddr());
	ASSERT(m_cKey.m_hWnd == NULL);
	m_cKey.SubclassWindow(hWnd);
	ASSERT(m_cKey.m_hWnd == hWnd);

	UINT nTabStops = 7;
	m_cKey.SetTabStops(nTabStops);

	m_cKey.GetClientRect(&rect);
	m_cKey.SetWindowPos(NULL, 0, 0, 0, 0,
		SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|SWP_NOZORDER|SWP_SHOWWINDOW);
	
	m_cKey.UpdateWindow();

	// destroy old
	::SetWindowPos(hWndOld, NULL, 0, 0, 0, 0,
		SWP_HIDEWINDOW|SWP_NOREDRAW|SWP_NOMOVE|SWP_NOSIZE|SWP_NOACTIVATE|
		SWP_NOZORDER);
	::DestroyWindow(hWndOld);

	UpdateData(FALSE);
}

Whoever said nothing's impossible never tried slamming a revolving door!

-- modified at 6:45 Wednesday 1st March, 2006g door!

Dan McCormick28-Feb-06 16:28

Dan McCormick

28-Feb-06 16:28

<rant>
ES_PASSWORD - totally useless, don't know why it exists.
</rant>

I had this same problem until I found (after much digging) the easy way. Check out: CEdit::SetPasswordChar[^]

From the documentation:

Parameters

ch

Specifies the character to be displayed in place of the character typed by the user. If ch is 0, the actual characters typed by the user are displayed.

Apparently if an Edit control has ES_PASSWORD set when it is created (or subclassed or... lordy, who knows exactly when), MFC calls SetPasswordChar() with a value of '*'. ES_PASSWORD does not seem to be a true window style attribute, but can the documentation point that out in an obvious manner? Nooooo! Mad | :mad:

Anyway, see if that won't give you a cleaner solution. It's working well for us in our shop.

Just remember... Offer void where prohibited. Your mileage may vary.

Later,
Dan

Remember kids, we're trained professionals.
Don't try this at home!

RobJones1-Mar-06 0:45

1-Mar-06 0:45

WOW!

Thanks, I'll give that a shot when I get into work.
Rob

Whoever said nothing's impossible never tried slamming a revolving door!

RobJones1-Mar-06 3:22

How a window can keep focus ?

1-Mar-06 3:22

Worked like a charm!!!

Thanks, that is much cleaner!

Rob

Whoever said nothing's impossible never tried slamming a revolving door!

CHEICKNA TRAORE28-Feb-06 4:21

28-Feb-06 4:21

Hi every body,

I use this code to stay my window on top :

::SetWindowPos(m_hWnd ,HWND_TOPMOST,294,251,415,240,SWP_SHOWWINDOW);

is there any way so that my window keep alwas the focus?

Thanks in advance

georges

David Crow28-Feb-06 4:44

28-Feb-06 4:44

Why three separate posts with the same question?

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

CHEICKNA TRAORE28-Feb-06 4:56

28-Feb-06 4:56

sorry,

just an error while i tried to post my message. I received error updating...

David Crow28-Feb-06 5:04

28-Feb-06 5:04

CHEICKNA TRAORE wrote:
just an error while i tried to post my message. I received error updating...

From my experience, 99% of the time this error is received, it is after the post has been made, but before the results are sent back to the client's browser.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

How a window can keep focus ?

Stephen Hewitt28-Feb-06 12:41

Stephen Hewitt

28-Feb-06 12:41

Yeah, it's happened to before also.

Steve

CHEICKNA TRAORE28-Feb-06 4:20

How my window keep focus ?

28-Feb-06 4:20

CHEICKNA TRAORE28-Feb-06 4:18

Re: How my window keep focus ?

28-Feb-06 4:18

Miszou28-Feb-06 13:07

Miszou

28-Feb-06 13:07

You could try resetting the focus back to your window in its onfocus() event, but I'm not entirely sure it will work.

Besides, a window that always has the focus will irritate an awful lot of users. The purpose of Windows is to allow users to switch to other tasks. To deliberately break this model will frustrate and anger many users...

The StartPage Randomizer | The Timelapse Project

Preparing Data Structure for Data Capture

chaitanya2228-Feb-06 4:16

chaitanya22

28-Feb-06 4:16

How to prepare data structure for capturing data from a machine??

Chaitanya

Re: Preparing Data Structure for Data Capture

David Crow28-Feb-06 4:47