Screen Event Recorder DLL/Application

#ifndef WINDOWPLACEMENT_H
#define WINDOWPLACEMENT_H

class CWindowPlacement : public WINDOWPLACEMENT
{
public:
   CWindowPlacement()
   {
      memset( (WINDOWPLACEMENT*) this, 0, sizeof(WINDOWPLACEMENT) );
      length = sizeof(WINDOWPLACEMENT);
      showCmd = SW_NORMAL;
   }
   CWindowPlacement(HWND hWnd)
   {
      length = sizeof(WINDOWPLACEMENT);
      GetPosData(hWnd);
   }
   BOOL GetPosData(HWND hWnd)
   {
      return ::GetWindowPlacement(hWnd, this);
   }
   BOOL GetPosData(LPCTSTR pstr)
   {
      if( lstrlen(pstr)==0 ) return FALSE;
      flags = _GetInt(pstr);
      showCmd = _GetInt(pstr);
      ptMinPosition.x = _GetInt(pstr);
      ptMinPosition.y = _GetInt(pstr);
      ptMaxPosition.x = _GetInt(pstr);
      ptMaxPosition.y = _GetInt(pstr);
      rcNormalPosition.left = _GetInt(pstr);
      rcNormalPosition.top = _GetInt(pstr);
      rcNormalPosition.right = _GetInt(pstr);
      rcNormalPosition.bottom = _GetInt(pstr);
      return TRUE;
   }
   BOOL GetPosData(HKEY hReg, LPCTSTR pstrKeyName)
   {
      TCHAR szData[256];
      DWORD dwCount = sizeof(szData)/sizeof(TCHAR);
      DWORD dwType = NULL;
      LONG lRes = ::RegQueryValueEx(hReg, pstrKeyName, NULL, &dwType, (LPBYTE)szData, &dwCount);
      if( lRes!=ERROR_SUCCESS ) return FALSE;
      return GetPosData(szData);
   }
   BOOL SetPosData(HWND hWnd)
   {
      // NOTE: Do not place this call in the window's own WM_CREATE handler.
      //       Remember to call ShowWindow() if this method fails!
      // Make sure it is not out-of-bounds
      RECT rcTemp;
      RECT rcScreen = { 0, 0, ::GetSystemMetrics(SM_CXSCREEN), ::GetSystemMetrics(SM_CYSCREEN) };
      if( ::IsRectEmpty(&rcNormalPosition) ) return FALSE;
      if( !::IntersectRect(&rcTemp, &rcNormalPosition, &rcScreen) ) return FALSE;
      // Show it...
      return ::SetWindowPlacement(hWnd, this);
   }
   BOOL SetPosData(LPTSTR pstr, UINT cchMax) const
   {
	  TCHAR szData[256] = { 0 };
      ::wsprintf(szData, TEXT("%ld %ld (%ld,%ld) (%ld,%ld) (%ld,%ld,%ld,%ld)"),
         flags,
         showCmd,
         ptMinPosition.x,
         ptMinPosition.y,
         ptMaxPosition.x,
         ptMaxPosition.y,
         rcNormalPosition.left,
         rcNormalPosition.top,
         rcNormalPosition.right,
         rcNormalPosition.bottom);
	  if (lstrlen(szData) > (int)cchMax)
		  return FALSE;
	  lstrcpy(pstr, szData);
      return TRUE;
   }
   BOOL SetPosData(HKEY hReg, LPCTSTR pstrValueName) const
   {
		TCHAR szData[256] = { 0 };
		if( !SetPosData(szData, (UINT) sizeof(szData)/sizeof(TCHAR)) ) return FALSE;
		return ::RegSetValueEx(hReg, pstrValueName, NULL, REG_SZ, (CONST BYTE*) szData, (::lstrlen(szData)+1)*sizeof(TCHAR))==ERROR_SUCCESS;
   }
   long _GetInt(LPCTSTR& pstr) const
   {
      // NOTE: 'pstr' argument is "byref"
      bool fNeg = false;
      if( *pstr==TCHAR('-') ) {
         fNeg = true;
         pstr = ::CharNext(pstr);
      }
      long n = 0;
      while( *pstr>=TCHAR('0') && *pstr<=TCHAR('9') ) {
         n = (n*10) + (*pstr - TCHAR('0'));
         pstr = ::CharNext(pstr);
      }
      while( *pstr>=TCHAR(' ') && *pstr<TCHAR('0') && *pstr!=TCHAR('-') ) pstr = ::CharNext(pstr);
      return fNeg ? -n : n;
   }
};

#endif //WINDOWPLACEMENT_H