// This is a function that select correc cursor for mouse pointer .
BOOL CLCView::OnSetCursor(CWnd* pWnd, UINT nHitTest, UINT message) 
{
  m_pViewWnd=pWnd;
  
  switch (m_dToolBox.CursorValue){
  case AND:  
    lhCursor=AfxGetApp()->LoadCursor(IDC_AND);
    SetCursor(lhCursor);
    ShowFlag=TRUE;
    break;

  case NAND:
    lhCursor=AfxGetApp()->LoadCursor(IDC_NAND);
    SetCursor(lhCursor);
    ...........  
} 

// This a function to draw selected gates on board 
// (after you click this gate on board)
void CLCView::ShowBitmap(int x,int y,int kind)
{
  CDocument* pDoc = GetDocument();
  CClientDC dc(this);
  CBitmap bitmap;
  CDC dcMemory;
  BITMAP bm;
  
  switch (kind) {
  case AND  : 
    bitmap.LoadMappedBitmap(IDB_AND,0);
    break;

  case NAND : 
    bitmap.LoadMappedBitmap(IDB_NAND,0);

// Call main calculator function
void CLCView::OnCalc() 
{
  m_dToolBox.UpdateData(TRUE);
  
  if (m_dToolBox.m_rOption==0)
    FastTrace=TRUE;    
  else
    FastTrace=FALSE;    

  m_dToolBox.UpdateData(FALSE);
  
  Calc();
}

// This function is like a snapper grid
boolean CLCView::Snaper(int x, int y,int kind)
{
  x=(x/32)*32;
  y=(y/32)*32;
  
  if(ShowFlag==TRUE)
  {
    ShowBitmap(x,y,m_dToolBox.CursorValue);
    ScreenMap(x,y,m_dToolBox.CursorValue);
  }
  else
  if (kind==_DEL)
  {
    ShowBitmap(x,y,m_dToolBox.CursorValue);
  .....
  .....
  }
...
}


// This function save your drawes gates for calculate
boolean CLCView::ScreenMap(int x, int y,int kind)
{
  int xMem,yMem;
  
  xMem=x/32;
  yMem=y/32;

  switch (kind) {
  case AND  : 
    screen[xMem][yMem].Gate=AND;
    screen[xMem][yMem].SGate="AND";
    screen[xMem][yMem].Group=1;
    screen[xMem][yMem].lunched=1;
    break;

  case NAND : 
    screen[xMem][yMem].Gate=NAND
...
...
// and this is calculatore of program
void CLCView::Calc()
{
for (int i=0;i<32;i++)
  for (int j=0;j<24;j++)
    if (screen[i][j].lunched==1)
    {
      UpdateData(FALSE);
      switch (screen[i][j].Gate)
      {
      case AND :
        {
        switch (screen[i-1][j].Gate) 
        {
        case DLR :
          screen[i][j].inValue1=screen[i-1][j].outValue1;
...........
.............
..............
}