Line numbers - C / C++ / MFC Discussion Boards

Replace bits within UInt32

zuschauer198031-May-05 3:22

zuschauer1980

31-May-05 3:22

Hi!

How could i replace for example the first byte (call it b0) of a UInt32 variable?

thx

Re: Replace bits within UInt32

Ryan Binns31-May-05 3:28

Ryan Binns

31-May-05 3:28

zuschauer1980 wrote:
How could i replace for example the first byte (call it b0) of a UInt32 variable?

newVal = (oldVal & 0xffffff00) | (newByteVal & 0xff);

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: Replace bits within UInt32

David Crow31-May-05 3:30

David Crow

31-May-05 3:30

By "first" do you mean least significant or most significant? Check out the bit-related operators such as AND (&), OR (|), NOT (~), and XOR (^).

"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown

Re: Replace bits within UInt32

PJ Arends31-May-05 9:06

PJ Arends

31-May-05 9:06

http://www.codeproject.com/cpp/bitbashing.asp[^]

"You're obviously a superstar." - Christian Graus about me - 12 Feb '03

"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04

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how to create a transparent pen?

pritamkd31-May-05 2:09

pritamkd

31-May-05 2:09

Hi,
I am developing a marker application. Basically allows free-hand drawing with the mouse. When i draw a line, i want the window below also to visible. I am not able to create a transparent Pen for this? i tried BS_HOLLOW, but it doesn't draw at all.

hdc = CreateDC(TEXT("DISPLAY"),NULL,NULL,NULL);
lb.lbColor = rgbCurrent;
lb.lbHatch = NULL;
lb.lbStyle = BS_SOLID;
//hNewPen = CreatePen(PS_SOLID,10,rgbCurrent);
//SetROP2(hdc,R2_MERGEPEN);
hNewPen = ExtCreatePen(PS_GEOMETRIC,10,&lb,0,NULL);
//SelectObject(hdc,CreateBrushIndirect(&lb));
//SetDCBrushColor(hdc,rgbCurrent);
SelectObject(hdc,hNewPen);
MoveToEx(hdc, PrevX, PrevY, NULL);
LineTo(hdc, CurrX, CurrY);
DeleteDC(hdc);
........

Can anyone help?

Hercules

Re: how to create a transparent pen?

Kaworu231-May-05 5:03

Kaworu2

31-May-05 5:03

Hi, I don't remember it very well, but you may search SelectStockObject (NULL_PEN); //NULL_BRUSH

C U later

Re: how to create a transparent pen?

pritamkd31-May-05 8:30

pritamkd

31-May-05 8:30

Thanks for replying...

But this code is all in Platform SDK, how do i create a NULL_PEN there. I create a BS_HOLLOW(same as BS_NULL) but it doesn't draw the line at all.

Your help will be appreciated!

Hercules

Line numbers

Stirfie31-May-05 1:54

Stirfie

31-May-05 1:54

Can anyone tell me how to show line numbers in the editor in visual studio 6. I've looked and cant find out how.

Regards
Paul

Re: Line numbers

Ravi Bhavnani31-May-05 2:08

Ravi Bhavnani

31-May-05 2:08

I didn't think you could do this before VS2003.

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

Re: Line numbers

Alexander ^M.,31-May-05 2:45

Alexander ^M.,

31-May-05 2:45

Isn't it displayed in the status bar?

Don't try it, just do it! Wink | ;-)

How to download secured web page ?

Yariv31-May-05 0:47

Yariv

31-May-05 0:47

I need to download a web page but I prefer not to use CHttpView because I do not need to display anything.
The problem is that in order to get to the page I want I need to login using a form. Using CHttpView I traced the form and found that the information passed is like :
URL: https://url.com/page.asp
PostData: ui=user&pass=pass&other=other
Headers: Content-Type: application/x-www-form-urlencoded

But still, browsing directly to https://url.com/page.asp?ui=user&pass=pass&other=other didn't work.
Is there a way to do this ?

I also would like to keep the session/connection to download other web pages from the same site (using the same cookie or whatever)

Re: How to download secured web page ?

Ravi Bhavnani31-May-05 2:04

Ravi Bhavnani

31-May-05 2:04

This[^] article may help.

/ravi

My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com

Change color of controls of a dialog

Ward31-May-05 0:39

Ward

31-May-05 0:39

I can change the background colors of child controls of a dialog by responding to the WM_CTLCOLORxxx messages
Example:

case WM_CTLCOLORBTN:
hBrushButton = CreateSolidBrush(RGB(255,102,15));
return (int)hBrushButton;

Now I'm looking for a way to change the textcolor as well. This for buttons, labels, listboxes, ...

Thanks in advance,

Ward

http://users.belgacom.net/wardvantichelen

Re: Change color of controls of a dialog

ThatsAlok31-May-05 1:25

ThatsAlok

31-May-05 1:25

Check these api's
[SetTextColor],[SetBkColor]

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Re: Change color of controls of a dialog

Ward31-May-05 3:46

Ward

31-May-05 3:46

That helped me.
Thanks!

My code is now the following:

case WM_CTLCOLORSTATIC:
hBrushButton = CreateSolidBrush(RGB(255,102,15));
SetTextColor((HDC) wParam, RGB(255,255,255));
SetBkColor((HDC) wParam, RGB(255,102,15));
return (int)hBrushButton;

This results is a nice orange label with white text. Smile | :)

Greetz,
Ward

See more from me at http://users.belgacom.net/wardvantichelen

Re: Change color of controls of a dialog

Cedric Moonen31-May-05 3:56

Cedric Moonen

31-May-05 3:56

Ward wrote:
This results is a nice orange label with white text.

D'Oh! | :doh:

Are you trying to make a copy of code project Smile | :)

Re: Change color of controls of a dialog

Ward31-May-05 4:14

Ward

31-May-05 4:14

Hihihi!

I've never thought that I was using the same colors.

Nice reply though!

Ward Laugh | :laugh:

http://users.belgacom.net/wardvantichelen

Re: Change color of controls of a dialog

ThatsAlok31-May-05 19:21

ThatsAlok

31-May-05 19:21

Ward wrote:
Thanks!

Mention Not!

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta

Soap Toolkit 3.0 Redistributable

SAKURAVN30-May-05 23:54

SAKURAVN

30-May-05 23:54

Hi!
I use Soap 3.0. But I don't install SoapToolkit SDK. I want do a program install (SoapInstall.msi) for use Soap.
Pls Help me!
Thanks!

Need help to use the Sort Iist Control with XP-Style!

bosfan30-May-05 23:47

bosfan

30-May-05 23:47

Hi comunity,
i need litle help to use this function to draw a arrow on listcontrolheader, where should i implemented this funcion OnPaint() ??? I coment out this lines in :
// change the item to owner drawn.
/*HD_ITEM hditem;

hditem.mask = HDI_FORMAT;
VERIFY( GetItem( iSortColumn, &hditem ) );
hditem.fmt |= HDF_OWNERDRAW;
VERIFY( SetItem( iSortColumn, &hditem ) );*/

and i change the SortHeaderCtrl.h with the function OnPaint(),
//{{AFX_MSG(CSortHeaderCtrl)
// NOTE - the ClassWizard will add and remove member functions here.
afx_msg void OnPaint();
//}}AFX_MSG

DECLARE_MESSAGE_MAP()

and i change the SortHeaderCtrl.cpp with the function OnPaint(),

where should i call this OnPaint(), witch place in my SortHeaderCtrl.cpp to show an arrow on a Listheader?? I hope you can understand me Frown | :-(

With best regards
Mirsad

Re: Need help to use the Sort Iist Control with XP-Style!

Jack Puppy31-May-05 3:54

Jack Puppy

31-May-05 3:54

Depending on how finicky you are, you can do it using NM_CUSTOMDRAW.

Here's something what I did:

<br />
void CSortHeaderCtrl::OnNMCustomdraw(NMHDR *pNMHDR, LRESULT *pResult)<br />
{<br />
  LPNMCUSTOMDRAW pNMCustomDraw = reinterpret_cast<LPNMCUSTOMDRAW>(pNMHDR);<br />
<br />
	  // Assume default processing<br />
      *pResult = CDRF_DODEFAULT;<br />
<br />
	  // Pre-paint stage for control; return flag so that we get messages for<br />
      // each item<br />
	  if (pNMCustomDraw->dwDrawStage == CDDS_PREPAINT)<br />
		    *pResult = CDRF_NOTIFYITEMDRAW;<br />
	  // Pre-paint stage for item; return flag so that we get messages after<br />
	  // each item is painted<br />
	  else if (pNMCustomDraw->dwDrawStage == CDDS_ITEMPREPAINT)<br />
		    *pResult |= CDRF_NOTIFYPOSTPAINT;<br />
	  // Post-paint stage for item<br />
	  else if (pNMCustomDraw->dwDrawStage == CDDS_ITEMPOSTPAINT)<br />
	  {<br />
		    CDC* pDC = CDC::FromHandle(pNMCustomDraw->hdc);<br />
		    ASSERT_VALID(pDC);<br />
		    if (!pDC)<br />
			      return;<br />
<br />
<br />
            int nColumn = static_cast<int>(pNMCustomDraw->dwItemSpec);<br />
        <br />
            // Current column is the sorted column<br />
            if (nColumn == m_nSortColumn)<br />
                 // DRAW ARROW HERE<br />
          }<br />
}<br />

Pssst. You see that little light on your monitor? That's actually a government installed spy camera. Smile and wave to big brother!

Re: Need help to use the Sort Iist Control with XP-Style!

Anonymous1-Jun-05 1:22

Anonymous

1-Jun-05 1:22

Hi Jack,
thank you for help, hmm, i'm scare that is litle to hi for my level(beginner) D'Oh! | :doh:

but i try it!
regards
mirsad

Re: Need help to use the Sort Iist Control with XP-Style!

bosfan1-Jun-05 2:23

bosfan

1-Jun-05 2:23

hi,
where can i find this : OnNMCustomdraw(NMHDR *pNMHDR, LRESULT *pResult) Sigh | :sigh:

mirsad

CListBox with titles

Vaclav30-May-05 23:20

Vaclav

30-May-05 23:20

I am looking for a simple way to add a title row/bar to the CListBox similar to Windows Task manager. Must be resizable and scrool horizontally.
Thanks for your help. Vaclav

Vaclav

Re: CListBox with titles

S Douglas31-May-05 1:04

S Douglas

31-May-05 1:04

That easy, set the style to report mode. Heres an article discussing ClistBox Ctrl usage.

http://www.codeproject.com/combobox/listbox_tut.asp[^]

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