Line Draw Program Using MouseMove Event With CPen Class

void CTryView::OnMouseMove(UINT nFlags, CPoint point)
{
//RedrawWindow();
// TODO: Add your message handler code here and/or call default

CClientDC *pDC = new CClientDC(this);

CPen p1;
if(m_i<100)
{

p1.CreatePen(PS_SOLID,2,RGB(255,235,65));
pDC->SelectObject(&p1);

pDC->MoveTo(m_start);
pDC->LineTo(point);
m_start=point;
}
else if(m_i<200)
{

p1.CreatePen(PS_SOLID,2,RGB(100,230,82));
pDC->SelectObject(&p1);

pDC->MoveTo(m_start);
pDC->LineTo(point);
m_start=point;
}
else if(m_i<300)
{

p1.CreatePen(PS_SOLID,2,RGB(50,130,182));
pDC->SelectObject(&p1);

pDC->MoveTo(m_start);
pDC->LineTo(point);
m_start=point;
}
else if(m_i<400)
{

p1.CreatePen(PS_SOLID,2,RGB(255,0,0));
pDC->SelectObject(&p1);

pDC->MoveTo(m_start);
pDC->LineTo(point);
m_start=point;
}
else
{

p1.CreatePen(PS_SOLID,2,RGB(10,30,242));
pDC->SelectObject(&p1);

pDC->MoveTo(m_start);
pDC->LineTo(point);
m_start=point;

}

if(m_i==0)
{
m_start=point;
}
if(m_i==400)
{
m_i=0;
}
else
{
pDC->MoveTo(m_start);
pDC->LineTo(point);
m_start=point;
}

m_i++;

CView::OnMouseMove(nFlags, point);
}

Moving ball around screen

void CDrawCPRView::OnLButtonDblClk(UINT nFlags, CPoint point)
{
// TODO: Add your message handler code here and/or call default

CClientDC *cr = new CClientDC(this);

CPen pn1;

pn1.CreatePen(PS_SOLID,2,RGB(255,0,0));

cr->SelectObject(pn1);

CBrush br1(RGB(255,0,0));

cr->SelectObject(br1);

//RedrawWindow();

while(1)
{

CRect rc;
GetClientRect(rc);
int x1=0,y1=0,a=0,b=0;

while(1)
{
if(a==0 && b==0)
{
x1+=5;
y1+=5;
}

if(a==0 && b==1)
{
x1+=5;
y1-=5;
}

if(a==1 && b==0)
{
x1-=5;
y1+=5;
}

if(a==1 && b==1)
{
x1-=5;
y1-=5;
}

if(x1 < a="0;" b="0;"> rc.right-2)
{
a=1;
}
else if(y1 > rc.bottom-2)
{
b=1;
}

RedrawWindow();
cr->Ellipse(x1,y1,x1+10,y1+10);
Sleep(20);
}

}

CView::OnLButtonDblClk(nFlags, point);
}

List of Function in VC++, Explain with Example

1. GetClientRect
2. CloseWindow
3. GetDlgItem
4. EnableWindow
5. Invalidate
6. RedrawWindow
7. GetWindowText
8. SetWindowText
9. GetScrollPos
10. GetScrollRange
11. SetScrollPos
12. SetScrollRange
13. SetTimer
14. MessageBox
15. GetCurSel
16. GetLBText
17. GetLBTextLen
18. AddString
19. DeleteString
20. InsertString
21. ResetContent
22. GetCount
23. GetText
24. GetTextLen
25. UpdateData
26. MoveTo
27. LineTo
28. Rectangle
29. Ellipse
30. DoModal
31. atoi 
32. IsEmpty
33. Empty
34. GetAt
35. SetAt
36. MakeLower
37. MakeUpper
38. MakeReverse
39. Remove
40. Format
41. Insert
42. Delete
43. Find
44. ReverseFind
45. SetRange
46. GetRange
47. GetPos
48. SetPos
49. OffsetPos
50. SetStep
51. StepIt

Explain All Function in Brief. Write Explanation in Notebook.

Code To Make Edit Box Enable and Disable

GetDlgItem(IDC_EDIT1)->EnableWindow();
GetDlgItem(IDC_EDIT1)->EnableWindow(FALSE);

How to Get System Time in VC++

How can we get system time ?

void CTimeDlg::OnButton1()
{
// TODO: Add your control notification handler code here
CTime t=CTime::GetCurrentTime();

CString str;
str.Format("%d:%d:%d",t.GetHour(),t.GetMinute(),t.GetSecond());

this->SetWindowText(str);
}