Re: Horizental Scroll is not Appearing in CCheckListBox .. Urgent - C / C++ / MFC Discussion Boards

IronMike28-Jan-05 3:06

28-Jan-05 3:06

Thanks first! I'll try to follow your advice with the handle.

The reason for using a SDI is, that in the end there shall be a programm, that can be run either in console mode by passing the parameters directly or in GUI mode, when there are no parameters given in the command line. But i'm just beginning this project.

Re: Console Output

V.28-Jan-05 2:47

28-Jan-05 2:47

#include <iostream><br />
<br />
then cout << ... << endl;

???

just a guess, hope it helps.

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

Re: Console Output

IronMike28-Jan-05 3:09

IronMike

28-Jan-05 3:09

If tried that, but it doesn't seem to work with SDI. Thanks anyway.

Solution: Console Output

IronMike31-Jan-05 21:38

IronMike

31-Jan-05 21:38

I've managed the problem by changing the linker settings.

- from /subsystem:windows to /subsystem:console (Project - Settings - Link - Project Options edit box)
- WinMainCRTStartup as Entry-point symbol (Project - Settings - Link - Output - Entry-point symbol).

Now it's possible to use printf as well as WriteConsole.

Smile | :)

Horizental Scroll is not Appearing in CCheckListBox .. Urgent

zahid_ash27-Jan-05 23:38

zahid_ash

27-Jan-05 23:38

HI
I am Creating ChecklistBox it shows Vertical Scroll Bar but not Horizental why ? I am using Horizental Scroll bar style.
Reply me urgent

Code is below

int CChkListDlg::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CDialog::OnCreate(lpCreateStruct) == -1)
return -1;

// TODO: Add your specialized creation code here
DWORD dwStyle = WS_CHILD | WS_BORDER | WS_VISIBLE | WS_VSCROLL|
WS_HSCROLL | LBS_HASSTRINGS | LBS_NOTIFY;

// Abov style has Horiztl and Vertcl Scroll Style

CRect rcDlg;
GetWindowRect(&rcDlg);
ScreenToClient(&rcDlg);

int L = (int)( 7.0 * rcDlg.Width() / 157.0);
int T = (int)( 19.0 * rcDlg.Height() / 167.0);
int R = (int)( 148.0 * rcDlg.Width() / 157.0);
int B = (int)( 118.0 * rcDlg.Height() / 167.0);
CRect ReqRect(L, T, R, B);
m_ChkListBox.Create(dwStyle, ReqRect, this, IDC_CHKFORCEDVAR);

Font.CreatePointFont(8 * 10, "Arial");
m_ChkListBox.SetFont(&Font);

for(int i=0; i<10 ; i++)
{
CString str;
str= " Data ";
m_ChkListBox.AddString(str);
}

return 0;
}

Regards.

Re: Horizental Scroll is not Appearing in CCheckListBox .. Urgent

tanvon malik28-Jan-05 2:22

tanvon malik

28-Jan-05 2:22

my brother,
Listbox initially donot display horizontal scrollbar, we have to call a member function of listbox which sets the actual width internally , when this width is given larger then the width in Listbox::Create the listbox shows horizontal scrollbar
i have used this method but at this time i am not remembring the actual name of the function, you can check docummentation for Listbox

i think name is
SetHorizontalExtent( int );

Note this function takes only one int value , which represents the width.

Re: Horizental Scroll is not Appearing in CCheckListBox .. Urgent

zahid_ash28-Jan-05 2:54

zahid_ash

28-Jan-05 2:54

thanks for the reply
Where i should this Function in coding ?

I tried it . But it is not Working.

code is :

int CRemoveConstraintsDlg::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
if (CDialog::OnCreate(lpCreateStruct) == -1)
return -1;

// TODO: Add your specialized creation code here
DWORD dwStyle = WS_CHILD | WS_BORDER | WS_VISIBLE | WS_HSCROLL |WS_VSCROLL | LBS_HASSTRINGS | LBS_NOTIFY;
CRect rcDlg;
GetWindowRect(&rcDlg);
ScreenToClient(&rcDlg);
int L = (int)(7.0 * rcDlg.Width() / 150.0);
int T = (int)(18.0 * rcDlg.Height() / 168.0);
int R = (int)(141.0 * rcDlg.Width() / 150.0);
int B = (int)(111.0 * rcDlg.Height() / 168.0);

CRect ReqRect(L, T, R, B);
m_ConsChkListBox.Create(dwStyle, ReqRect, this, IDC_CONSTRAINTS);
if(!AddConstraints())
return -1;
return 0;
}

bool CRemoveConstraintsDlg::AddConstraints()
{
/*for(i=0; i<m_conschklistbox.getcount(); i++)
="" {
="" m_conschklistbox.deletestring(i);
="" }
="" *=""
="" csize="" sz;
="" cstring="" str;
="" textmetric="" tm;
="" int="" dx="0" ;
="" cdc*="" pdc="m_ConsChkListBox.GetDC();

" pdc-="">GetTextMetrics(&tm);

CStringArray* pList = m_pEdoData->GetpConstraintExpList();
for(int i=0; i<plist->GetSize(); i++)
{
m_ConsChkListBox.GetText(i, str);
sz = pDC->GetTextExtent(str);

m_ConsChkListBox.AddString(pList->GetAt(i));
sz.cx += tm.tmAveCharWidth;

if (sz.cx > dx)
dx = sz.cx;

}

m_ConsChkListBox.ReleaseDC(pDC);

// Set the horizontal extent so every character of all strings
// can be scrolled to.
m_ConsChkListBox.SetHorizontalExtent(dx);

return true;
}

waitng for ut reply
thanx

Regards.

Re: Horizental Scroll is not Appearing in CCheckListBox .. Urgent

V.28-Jan-05 2:57

28-Jan-05 2:57

You have to set the show Horizontal Toolbar and implement a function like following:
call it when you have added the items...

good luck.

PS: Although probably not intended, your mail almost seems unpolite. Don't sweat it, It won't keep me up at night Smile | :)

, but try to take care of your language. Big Grin | :-D

void DlgFlexListSelectValue::SetHorizontalScrollBar(){<br />
	//Next is to set the horizontal scroll bar<br />
	//Find the longest string in the list box.<br />
	CString str;<br />
	CSize sz;<br />
	int dx = 0;<br />
	TEXTMETRIC tm;<br />
	CDC* pDC = m_valueList.GetDC();<br />
	CFont* pFont = m_valueList.GetFont();<br />
<br />
	//Select the listbox font, save the old font<br />
	CFont* pOldFont = pDC->SelectObject(pFont);<br />
	//Get the text metrics for avg char width<br />
	pDC->GetTextMetrics(&tm); <br />
<br />
	for(int i = 0; i < m_valueList.GetCount(); i++){<br />
		m_valueList.GetText(i, str);<br />
		sz = pDC->GetTextExtent(str);<br />
<br />
		//Add the avg width to prevent clipping<br />
		sz.cx += tm.tmAveCharWidth;<br />
<br />
		if(sz.cx > dx){<br />
			dx = sz.cx;<br />
		}											//end if<br />
	}												//end for<br />
<br />
	//Select the old font back into the DC<br />
	pDC->SelectObject(pOldFont);<br />
	m_valueList.ReleaseDC(pDC);<br />
	//Set the horizontal extent so every character of all strings <br />
	//can be scrolled to.<br />
	m_valueList.SetHorizontalExtent(dx);<br />
}													//end function SetHorizontalScrollBar

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

I tried but not working

zahid_ash28-Jan-05 3:02

zahid_ash

28-Jan-05 3:02

HI,

I tried but its not working .

help me ou tplz
thanks

Regards.

Re: I tried but not working

V.28-Jan-05 3:07

28-Jan-05 3:07

I just posted the reply? How could you have tried so fast?

Anyway, it's working in my code, I faced the same problem and looked on MSDN where I (for once) found the reply (complete with examplecode)

I'd suggest you take a look there, there's nothing more I can do for you. sorry.

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix

is it for CheckListbox too

zahid_ash28-Jan-05 3:31

zahid_ash

28-Jan-05 3:31

i Treid it when Tanvon replied me

I think it i just for Listbox , not for Checklistbox

is it?

thanx

Regards.

Re: is it for CheckListbox too

tanvon malik28-Jan-05 3:48

tanvon malik

28-Jan-05 3:48

SetHorizontalExtent()
works both for listbox and check listbox

I have used it in checklistbox in one project where it worked OK

Re: I tried but not working

tanvon malik28-Jan-05 3:32

tanvon malik

28-Jan-05 3:32

Please use SetHorizontalExtent() before AddString()
you can use any value suppose 100 or 200
then try , I think it will work

It works but After Addstring()

zahid_ash30-Jan-05 19:07

zahid_ash

30-Jan-05 19:07

May be i am wrong .
But i wana make ur Correction , Its late , but i worked it today.

It Works after AddString() Adding All strings in CChecklistbox,

then use this code for that listbox, and it calculates the max string width from listbox.

I am sure that i m right , Bcoz it works for me in this way.

thanx.
zahid_ash@hotmail.com

Regards.

dWhat is protected inheritance?

phijophlip27-Jan-05 22:53

phijophlip

27-Jan-05 22:53

Hello Friends,

Can you tell me What is protected inheritance? and Where are the situations in which protected inheritance is used under what circumstances.

Smile | :)

Philip

Re: dWhat is protected inheritance?

Ryan Binns28-Jan-05 0:49

Ryan Binns

28-Jan-05 0:49

phijophlip wrote:
Can you tell me What is protected inheritance?

What didn't you understand about my last answer? (here[^]) It is a way of limiting the visibility of base-class members in the derived class. Protected inheritance means that all the members inherited from the base class have a visibility of at least protected (or private if they're declared private). Private inheritance means that all the members inherited from the base class have a visibility of private.

So basically, protected inheritance means that any public members of the base class will become protected in the derived class, and protected and private members will stay as they were.

phijophlip wrote:
Where are the situations in which protected inheritance is used under what circumstances

I've never had a reason to use it, but you'd use it if the derived class modified the behaviour of the base class in such a way that calling some of the public members of the base class would be harmful to the operation of the derived class, so protected inheritance would make those members public so they couldn't be called from outside the class. IMO, the need to do this indicates a bad OO design, so I would recommend avoiding it.

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: dWhat is protected inheritance?

trelliot28-Jan-05 2:46

trelliot

28-Jan-05 2:46

Settle down, fella - it's a legitimate question and your answer is not clear.

Re: dWhat is protected inheritance?

Selvam R28-Jan-05 1:09

Selvam R

28-Jan-05 1:09

Hi,

http://www.parashift.com/c++-faq-lite/private-inheritance.html[^]

http://www.cs.uregina.ca/Links/class-info/cplusplus/Inheritance.html[^]

Regards,
Selvam

Re: dWhat is protected inheritance?

trelliot28-Jan-05 2:39

trelliot

28-Jan-05 2:39

Basically it means that anything that is 'protected' can only be seen by derived or friend classes.
It's usage is entirely up to the individual.

Code for Hibernate and turn of monitor

Rajesh_K_Sharma27-Jan-05 21:39

Rajesh_K_Sharma

27-Jan-05 21:39

Hi,
Is there any code I can use in vc++/MFC to make turn off and Hibernate of monitor.?
Regards

rajesh

Re: Code for Hibernate and turn of monitor

geo_m27-Jan-05 21:49

geo_m

27-Jan-05 21:49

look at SetSystemPowerState API function.

gamma

viliam27-Jan-05 21:39

viliam

27-Jan-05 21:39

Does anyone know some way how to programaly retrieve and set
Gamma correctin options?
I mean value from Display setting option for whole computer.
I tried GetDeviceGammaRamp() but i guess it is not
what i am looking for or I dont know how to use it right.
thank you

viliam

Help to debug Error!!

Anonymous27-Jan-05 21:13

Anonymous

27-Jan-05 21:13

hi all, i'm currently working on a PIM project. I've constructed a propertypage within a form view; on one of the tabs, i tried to put a CListCtrl member variable to a list control on my dialog template, however the below error popped up:

Debug Assertion failed
Program: my.exe
File: dbgheap.c
Line: 1017
Expression:_BLOCK_TYPE_IS_VALID(pHead->nBlockUse)

i tried various controls (e.g. button) but they all returned the same result.
However, all would be fine if i just had the control on my dialog template without declaring the member variable.

Can anyone help me out of this one?

Re: Help to debug Error!!

James R. Twine28-Jan-05 2:44

James R. Twine

28-Jan-05 2:44

   At first glance, that looks like a problem with using delete on an invalid pointer value. For example, doing a "double-delete", or passing a plain old fashioned uninitialized pointer to delete.

   These kinds of problems are very hard to locate without some of the code involved...

   Peace!

-=- James
Tip for inexperienced drivers: "Professional Driver on Closed Course" does not mean "your Dumb Ass on a Public Road"!
Articles -- Products: Delete FXP Files & Check Favorites

Re: Help to debug Error!!

Anonymous28-Jan-05 13:43

Anonymous

28-Jan-05 13:43

Thanks for your reply!

To be more precise, i only get the error when i am exiting the main application. My project is a SDI project. When i compile and link in Release mode, there's no problem at all. From what i understand about MFC, when we use the keyword new for allocation purposes, we should use delete in conjunction with it right?

i only used new when i am initializing my form view.i use a pictutre control to reserve a place on my form view for my property sheet(ie. a place holder). my code goes like this:

/********************************************************/
// create and associate the property sheet with
//the "place holder" window
/********************************************************/

CMySheet *pMySheet;<br />
<br />
	CWnd* pPlaceHolder = GetDlgItem(IDC_PLACEHOLDER);<br />
	<br />
	pMySheet = new CMySheet(pPlaceHolder);<br />
<br />
	if (!pMySheet->Create(pPlaceHolder, WS_CHILD | WS_VISIBLE, 0))<br />
	{<br />
		delete pMySheet;<br />
		pMySheet = NULL;<br />
		return;<br />
	}

// fit the property sheet into the place holder window
// and show it

CRect m_PlaceSheet;<br />
<br />
	GetDlgItem( IDC_PLACEHOLDER )->GetWindowRect( &m_PlaceSheet );<br />
<br />
	ScreenToClient( &m_PlaceSheet );<br />
<br />
	pMySheet->SetWindowPos( NULL, 0, 0, m_PlaceSheet.Width(), m_PlaceSheet.Height(), SWP_NOZORDER | SWP_NOACTIVATE );

Thanks for any help in advance!!

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