ToDoList Add-on

#include "stdafx.h"
#include "dlg_resize.h"

/////////////////////////////////////////////////////////////////////////
// default constructor

CResizeControl::CResizeControl( void ) 
  : m_hParent( NULL )
  , m_hControl( NULL )
  , m_bLeftAnchor( false )
  , m_bRightAnchor( false )
  , m_bTopAnchor( false )
  , m_bBottomAnchor( false )
{
};

//////////////////////////////////////////////////////////////////////////
// constructor init members by control window handler and align type

CResizeControl::CResizeControl( HWND hControl, long Align )
  : m_hParent( NULL )
  , m_hControl( NULL )
  , m_bLeftAnchor( false )
  , m_bRightAnchor( false )
  , m_bTopAnchor( false )
  , m_bBottomAnchor( false )
{
  SetControl( hControl );
  SetAlign( Align );
};

//////////////////////////////////////////////////////////////////////////
// constructor init members by control window handler and align type

CResizeControl::CResizeControl( HWND hParent, int CtrlID, long Align )
  : m_hParent( NULL )
  , m_hControl( NULL )
  , m_bLeftAnchor( false )
  , m_bRightAnchor( false )
  , m_bTopAnchor( false )
  , m_bBottomAnchor( false )
{
  SetControl( hParent, CtrlID );
  SetAlign( Align );
};

//////////////////////////////////////////////////////////////////////////
// Function store in class members all needed to resize info

void CResizeControl::SetControl( HWND hControl )
{
  m_hControl = hControl;
  m_hParent = ::GetParent( m_hControl );
  
  RECT  tRect;
  POINT tPoint;
  ::GetWindowRect( m_hControl, &tRect );
  ::GetClientRect( m_hParent, &m_tParent );
  
  // Get client coordinates (left, top)
  tPoint.x = tRect.left;
  tPoint.y = tRect.top;
  ::ScreenToClient( m_hParent, &tPoint );
  m_tClient.left = tPoint.x;
  m_tClient.top = tPoint.y;
  
  // Get client coordinates (right, bottom)
  tPoint.x = tRect.right;
  tPoint.y = tRect.bottom;
  ::ScreenToClient( m_hParent, &tPoint );
  m_tClient.right = tPoint.x;
  m_tClient.bottom = tPoint.y;
};


//////////////////////////////////////////////////////////////////////////
// function will update size and position of control

void CResizeControl::UpdatePos( HDWP hDef /*= NULL*/ )
{
  int x = 0, y = 0;
  int cx = m_tClient.right - m_tClient.left;
  int cy = m_tClient.bottom - m_tClient.top;
  
  RECT tParent;
  ::GetClientRect( m_hParent, &tParent );
  
  if( m_bLeftAnchor )
  {
    x = m_tClient.left;
    
    if( m_bRightAnchor )
      cx = tParent.right - x - ( m_tParent.right - m_tClient.right );
  }
  else
    if( m_bRightAnchor )
      x = tParent.right - cx - ( m_tParent.right - m_tClient.right  );
    
  if( m_bTopAnchor )
  {
    y = m_tClient.top;
    
    if( m_bBottomAnchor )
      cy = tParent.bottom - y - ( m_tParent.bottom - m_tClient.bottom );
  }
  else
    if( m_bBottomAnchor )
      y = tParent.bottom - cy - ( m_tParent.bottom - m_tClient.bottom );
    
  if( hDef )
    ::DeferWindowPos( hDef, m_hControl, NULL, x, y, cx, cy, SWP_NOZORDER | SWP_NOOWNERZORDER );
  else
    ::SetWindowPos( m_hControl, NULL, x, y, cx, cy, SWP_NOZORDER | SWP_NOOWNERZORDER );
};

//:> end of file