Button Caption - C / C++ / MFC Discussion Boards

yeah.

Before posting this problem on the boards, I had tried attaching void as the function sig:

void showNumber( TreeItemType& iTreeNumber )
{
    cout << iTreeNumber.getKey();
}

and this is error i get:

"cpp(74) : error C2664: 'BinarySearchTree::preorderTraverse' : cannot convert parameter 1 from 'void' to 'FunctionType'"

then i tried this.

FunctionType showNumber( TreeItemType& iTreeNumber )
{
    return showNumber(iTreeNumber);
}

for no error, but not the correct solution.

Then the problem is with code you've not shown. I've taken each of your code snippets and it compiles fine.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Man who follows car will be exhausted." - Confucius

Wow, I wonder what it is then.

So you were able to call the BST's preorder traversal in main?

like so:

cTree1.preorderTraverse(showNumber(iFromTree));

By the way, thanks for all your quick responses.

Member 3822532 wrote:
So you were able to call the BST's preorder traversal in main?

Exactly like this.

"One man's wage rise is another man's price increase." - Harold Wilson

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

"Man who follows car will be exhausted." - Confucius

damn... that works

I see what I did wrong now.

Thanks a lot for your help.

hi i am tryingto build astatic library. and while i build i get this fatal error, kindly help me rectify this.

fatal error C1083: Cannot open include file: 'BasicHashTable.hh': No such file or directory

if this is a C# question, it's in the wrong forum.

if it's a C++ question, then you have to either tell the compiler where to find BasicHashTable.hh or, put BasicHashTable.hh in a place where the compiler is already looking.

image processing toolkits | batch image processing

i have created a 5 Buttons dynamically.
eg :
2) Button 1 contol id :5000
1) Button 2 contol id :5001
1) Button 3 contol id :5002
1) Button 4 contol id :5003
1) Button 5 contol id :5003,

i need to select caption name "Button 1" using its control id 5000;
i used RButtonup and i got control id. But i dont know how to get the caption of Button .Please help.

Assuming your controls are in a dialog box: If you are using Win32 then you may call SendDlgItemMessage (with WM_GETTEXT or WM_SETTEXT, depending on your needs).
In a similar way you may use MFC's CWnd::SendDlgItemMessage.
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

[My articles]

CWnd::SendDlgItemMessage,
i have no idia if you give example, it is very helpful to me.

Inside a method of your window class (the parent window of your buttons) call, for instance:

SendDlgItemMessage(5000, WM_SETTEXT, 0 , (LPARAM) _T("BUTTON 0"));

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

[My articles]

no i am not getting, please is there any sample code.

If you post your (relevant) code may be I can tell you how to modify it.
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

[My articles]

ON_COMMAND_RANGE(5000,5100,OnButtonRange)

void CTest::OnShowWindow(BOOL bShow, UINT nStatus)
{
CDialog::OnShowWindow(bShow, nStatus);
CButton* m_btDynamic;
CString csText;
int k=0;

for(int i=0;i<5;i++)
{
m_btDynamic = new CButton();

csText.Format(L"Button %d",i+1);
m_btDynamic->Create(csText, BS_FLAT|WS_VISIBLE|WS_CHILD|BS_PUSHBUTTON|BS_ICON,
CRect(10+k ,10+k,60+k,60+k),this, 5000+i);
k=k+30;

}

}

void CTest::OnButtonRange(UINT nIDforControl)
{

int iSelectedControlID;
iSelectedControlID = nIDforControl;
// here i want button caption

}
Where i should use SendDlgItemMessage()

Well, you already set the caption for you button with known values, so what's your need now?

BTW I suggest you to maintain the CButton pointers in a member variable:
in class declaration:

CButton * m_btDynamic[5];

then, in you function you may do

void CTest::OnShowWindow(BOOL bShow, UINT nStatus)
{
     CDialog::OnShowWindow(bShow, nStatus);
     
     CString csText;    
     int   k=0;
         
     for(int i=0;i<5;i++)
     {
       m_btDynamic[i] = new CButton();
              
       csText.Format(L"Button %d",i+1);         
       m_btDynamic[i]->Create(csText,BS_FLAT|WS_VISIBLE|WS_CHILD|BS_PUSHBUTTON|BS_ICON,
           CRect(10+k ,10+k,60+k,60+k),this, 5000+i);
        k=k+30;
     }
}

so that whenever you need to access the caption of, say, third button, you may call

m_btDynamic[2]->GetWindowText();

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

[My articles]

thanks CPallini,
this is not exact code i have posted.
in my actual code i have created 100 buttons, same way as u told. but the problem is if user right click on any button i want that caption.

You may do this way (in your event handler):

CButton * pClickedButton = (CButton *) GetDlgItem( id ); // the id is known, as you stated
CString sClickedCaption = pClickedButton->GetWindowText();

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

[My articles]

modified on Friday, March 26, 2010 10:26 AM

i am getting error
error C2039: 'GetText' : is not a member of 'CButton'

Sorry, I should have fixed it now.
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

[My articles]

It's GetWindowText, not GetText.

But if you look at the documentation for CWnd on msdn, you can see the details for yourself too.

Good luck!

Iain.

I have now moved to Sweden for love (awwww).

ok thank you i will try

Who do you think you are, God?

(I was worried that you missed a certain poster's rants.)

To your knees! (to hear the softly spoken magic spells) $Shucks | :-\$

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

[My articles]

Hi I'm making a simple drawing program I used offset to set up a specific drawing.
The picture drawn with offset moves on the screen when i draw another picture everything drawn with this function moves by one pixel permanently on the screen. Cant find source of this problem.
It is an MFC aplication.

CS2::CS2(CPoint Start, CPoint End, COLORREF aColor)
{
	m_PunktP = Start;
	m_PunktD = End;
	m_Color = aColor;
	m_Pen = 1;
	m_EnclRect = CRect(Start, End);
	m_EnclRect.NormalizeRect();
}

CS2::~CS2(void)
{
}
void CS2::Draw(CDC* pDC)
{
	CPen aPen;
	POINT pt;
	if(!aPen.CreatePen(PS_SOLID, m_Pen, m_Color))
	{
		AfxMessageBox(_T("Pen creation failed"), MB_OK);
		AfxAbort();
	}
	CPen* pOldPen = pDC->SelectObject(&aPen);
	pDC->MoveTo(m_PunktP);
	pt.x = 0;
	pt.y = 63;
	m_PunktP.Offset(pt);
	pDC->LineTo(m_PunktP);
	[...]
	pt.x = 0;
	pt.y = -13;
	m_PunktP.Offset(pt);
	pDC->LineTo(m_PunktP);
	pt.x = -32;
	pt.y = 13;
	m_PunktP.Offset(pt);
	pDC->LineTo(m_PunktP);
	pDC->SelectObject(pOldPen);
}

modified on Friday, March 26, 2010 9:33 AM

Please post code snippets using the code block button.
Could you please elaborate a bit?
(I'm not sure I got you) You're trying to draw shapes at the mouse pointer position and are you in trouble because of too many drawings take place?
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

[My articles]