C / C++ / MFC

<code>TCHAR</code> szStr[20]= <code>_T(</code>"12.45.67.89"<code>)</code>;
HKEY hKey;

// opening a subkey, then creating and setting a value
if (RegOpenKeyEx(HKEY_LOCAL_MACHINE, 
               _T("SYSTEM\\CurrentControlSet\\Services\\SNMP\\Parameters\\s1"), 
                     0, KEY_ALL_ACCESS, &hKey) != ERROR_SUCCESS)
{
   printf("\nError opening the desired subkey (doesn't exist?).\n");
}
else
{
   if (RegSetValueEx(hKey, _T("public"), NULL, REG_SZ, <code>(const BYTE *)</code>szStr, <code>(_tcslen(szStr)+1)*sizeof(TCHAR)</code>) == ERROR_SUCCESS)
      printf("\nThe value of the key was set successfully.\n");
   else
      printf("\nError setting the value of the key.\n");

   <code>RegCloseKey(hKey);</code>
}

Mark Salsbery
Microsoft MVP - Visual C++

CHeaderCtrl *pHeader = m_pMyListCtrl->GetHeaderCtrl ();

HD_ITEM hdItem = {0};
TCHAR buf [128];
lstrcpy (buf, _T("Hello"));
hdItem.mask = HDI_TEXT;
hdItem.pszTest = buf; // can almost certainly cast from a constant string.

pHeader->SetItem (n, &hdItem);

Dhiraj kumar Saini wrote:

'pszTest' : is not a member of '_HD_ITEMW

"_$h@nky_" wrote:

im set a font over the property sheet

Sk Mohiuddin wrote:

I want to draw a rectangle on mouse move

// MyWnd.h (CMyWnd class):

bool fInCapture;
CPoint RubberBandPoint;
CRect RubberBandRect;
void DrawRubberBandRect();



// MyWnd.cpp

CMyWnd::CMyWnd()
{
   fInCapture = false;
}

void CMyWnd::OnLButtonDown(UINT nFlags, CPoint point)
{
	CWnd::OnLButtonDown(nFlags, point);

	SetCapture();
	fInCapture = true;
	RubberBandPoint = point;
	RubberBandRect.SetRect(point.x, point.y, point.x, point.y);
	DrawRubberBandRect();  // Draw the first rectangle
}

void CMyWnd::OnMouseMove(UINT nFlags, CPoint point)
{
	if (fInCapture)
	{
		DrawRubberBandRect();  // Erase the previous rectangle
		RubberBandRect.SetRect(RubberBandPoint.x, RubberBandPoint.y, point.x, point.y);
		DrawRubberBandRect();  // Draw the new rectangle
	}

	CWnd::OnMouseMove(nFlags, point);
}

void CMyWnd::OnLButtonUp(UINT nFlags, CPoint point)
{
	if (fInCapture)
	{
		DrawRubberBandRect();  // Erases the rectangle
		ReleaseCapture();
		fInCapture = false;
	}

	CWnd::OnLButtonUp(nFlags, point);
}

void CMyWnd::DrawRubberBandRect()
{
	CClientDC dc(this);
	int nPenWidth = 4;
	CPen DrawPen(PS_SOLID, nPenWidth, RGB(0x80,0x80,0x80));
	CPen *pOldPen = dc.SelectObject(&DrawPen);
	CGdiObject *pOldBrush = dc.SelectStockObject(NULL_BRUSH);
	int OldROPMode = dc.SetROP2(R2_XORPEN); //R2_NOTXORPEN

	dc.Rectangle(&RubberBandRect);

	dc.SetROP2(OldROPMode);
	dc.SelectObject(pOldBrush);
	dc.SelectObject(pOldPen);
}

Mark Salsbery
Microsoft MVP - Visual C++