C / C++ / MFC

Re: How to find which Window have some DC ?

1-Sep-03 1:59

Hi,

Enumerate all windows (EnumWindows, EnumChildWindows, ...)
and compre these DC's with existing.

Vitali
http://www.creative-case.com[^]

vgrigor1-Sep-03 2:00

vgrigor

1-Sep-03 2:00

There is just API method:

HWND hwnd_parent = ::WindowFromDC(di.hdcDraw);

Re: How to find which Window have some DC ?

Vitali Halershtein1-Sep-03 2:12

Re: client server program

1-Sep-03 2:12

Fine

You have answer.

Vitali
http://www.creative-case.com

client server program

vision20041-Sep-03 0:42

vision2004

1-Sep-03 0:42

Dear sir,

i am doing project in client server program like

we are transferring files from server to client

so, am going to use like FTP implementatins..

so, i want to know how we are using client server program

can u please send how to implement this code. i am going to develope

this in wi32 console application in VC++.

Thanks in advance,

Rathi.

valikac1-Sep-03 5:52

valikac

1-Sep-03 5:52

One solution is raw winsock. Look in CodeProject code section for examples of winsock designs.

Kuphryn

Drawing on Dialog using DC

YaronNir1-Sep-03 0:04

YaronNir

1-Sep-03 0:04

Hi all,

i have a dialog, i catch the OnPaint() message. here is the code

void CMyDialog::OnPaint() 
{
	CPaintDC dc(this); // device context for painting
	GetWindowRect(m_rectDlg);
        PlaceTitleBorder(dc);
}

in in the PlaceTitleBorder() method i draw a bitmap:

void CMyDialog::PlaceTitleBorder(CPaintDC &dc)
{
	BITMAP bmp;
	memset(&bmp,0,sizeof(bmp));
	::GetObject(m_hTitleBorder,sizeof(bmp),&bmp);	
	HDC compatibleDC = ::CreateCompatibleDC(dc);
	HBITMAP hSavedObj;
	hSavedObj = (HBITMAP)::SelectObject(compatibleDC,m_hTitleBorder);
	BOOL bRes = StretchBlt(dc, 
			   m_rectTitleBorder->left,
			   m_rectTitleBorder->top,
			   m_rectTitleBorder->Width(),
			   m_rectTitleBorder->Height(),
			   compatibleDC,
			   0,
			   0,
			   bmp.bmWidth,
			   bmp.bmHeight,
			   SRCCOPY);
	::SelectObject(compatibleDC,hSavedObj);
	::DeleteDC(compatibleDC);	
}

when dialog appear i see the bitmap ok. when i move the dialog around the screen and go out of the bounds of the screen, and then return to the screen, the bitmap disappears (not redrawn???) can any1 help me??

thanks in advanced

Yaron

Ask not what your application can do for you,
Ask what you can do for your application

Vitali Halershtein1-Sep-03 0:19

1-Sep-03 0:19

Hi YaronNir,

I think this is not good way to rewrite OnPaint in dialog
(hmmm - f.e. because dialog may contain other elements).
Insted this let try to put cpecial element on the dialog
and draw bitmap in to it.

Hope this help.

Vitali
http://www.creative-case.com[^]

YaronNir1-Sep-03 1:00

YaronNir

1-Sep-03 1:00

hi,

thanks for the reply...

What can you suggest i do ??

Ask not what your application can do for you,
Ask what you can do for your application

Vitali Halershtein1-Sep-03 2:23

1-Sep-03 2:23

I usualy put some element in the dialog
such as image or button and put image
in to it.

Vitali
http://www.creative-case.com[^]

csc1-Sep-03 2:10

csc

1-Sep-03 2:10

I'm doing that too, but it works. Even if the dialog needs a refresh / redraw.

Just to show an example, which should not look very strange from your point of view :

1) Define the handlers for InitDialog and OnPaint and add a CBitmap object in the dialogs header :

class CMyDialog : public CDialog
{
:
virtual BOOL OnInitDialog();
afx_msg void OnPaint();
:
CBitmap m_bmMyBitmap;
:
};

2) make sure that the OnPaint:handler are in the CPP-File :
BEGIN_MESSAGE_MAP(CMyDialog, CDialog)
//{{AFX_MSG_MAP(CMyDialog)
ON_WM_PAINT()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

3) Init the Bitmap object in the OnInitDialog function
BOOL CMyDialog::OnInitDialog()
{
CDialog::OnInitDialog();
m_bmMyBitmap.LoadBitmap( IDB_MY_BITMAP );
}

4) Fill the OnPaint-Handler :
void CDialogDruckauswahl::OnPaint()
{
CPaintDC dc(this); // device context for painting

// fill dialog background with some color.....
CRect crRect;
GetClientRect( &crRect );
COLORREF crColor = RGB( 255,255,255 );
CBrush* pFillBrush = new CBrush( crColor );
CBrush* pOldBrush = dc.SelectObject( pFillBrush );
CPen* pNewPen = new CPen( PS_SOLID, 1, crColor );
CPen* pOldPen = dc.SelectObject( pNewPen );
dc.Rectangle( crRect );
dc.SelectObject( pOldPen );
delete pNewPen;
pNewPen = NULL;
dc.SelectObject( pOldBrush );
delete pFillBrush;
pFillBrush = NULL;

// in welchen Bereich ?
DrawBitmap( &dc, crRect, &m_bmMyBitmap );
}

5) at least : define the bitmap drawing function :
void CMyDialog::DrawBitmap( CDC* pDC, CRect crRect, CBitmap* pBM )
{
// create a memory dc to prepare drawing via bitblt ...
CDC* pmemDCBitBlt = new CDC();
pmemDCBitBlt->CreateCompatibleDC( pDC );
CBitmap* pOldBM = pmemDCBitBlt->SelectObject( pBM );

// blit the bitmap into our view using the bitblt-xor-mode
pDC->BitBlt(crRect.TopLeft().x, crRect.TopLeft().y, crRect.Width(), crRect.Height(), pmemDCBitBlt, 0, 0, SRCCOPY );

// free the memory dc and the bitmap ....
pmemDCBitBlt->SelectObject( pOldBM );
delete pmemDCBitBlt;
pmemDCBitBlt = NULL;
}

YaronNir1-Sep-03 2:12

YaronNir

1-Sep-03 2:12

Hi,

thanks for the reply,
i wrote something similar to what you've posted and it works!

thanks a lot

Yaron

Ask not what your application can do for you,
Ask what you can do for your application

String Parsing

KKR31-Aug-03 23:50

KKR

31-Aug-03 23:50

I need to open a Text file and read the first line which is like "Run","FileNo","Distance",...
Then i've pickup words like Run,FileNo.

I was able to open, read Line using CStdioFile.ReadLine();
How to parse the line and get the words??
Thanks In advance.

Warm Regards,
KKR

Vitali Halershtein1-Sep-03 0:08

1-Sep-03 0:08

Hi,

From many other ways you can try standard C
functions like strtock(...)

Vitali
http://www.creative-case.com[^]

KKR1-Sep-03 0:20

KKR

1-Sep-03 0:20

Thanks for Flashy Response,
Now My entire line is in a CString , shall i have to convert it to char* , to apply those functions like strtock();

Warm Regards,
KKR

Vitali Halershtein1-Sep-03 0:31

1-Sep-03 0:31

this is very simple:

use syntax similar:

strtok( (char*)(LPCTSTR)CStringvariable, ... );

or use GetBuffer member from CString

Vitali
http://www.creative-case.com[^]