mc9246-visual programming lab
TRANSCRIPT
1. SDK PROGRAM FOR CREATING SIMPLE WINDOW
SOURCE CODE:
#include<afxwin.h>
class mywnd : public CFrameWnd
{
public:
mywnd()
{
Create(0, "My window");
}
};
class myapp: public CWinApp
{
public :
BOOL InitInstance()
{
mywnd *p;
p = new mywnd;
m_pMainWnd = p ; // main thread
p->ShowWindow(SW_SHOWNORMAL);
return TRUE;
}
};
myapp A;
OUTPUT:
2. SDK PROGRAM FOR KEYBOARD AND MOUSE EVENTS
SOURCE CODE:
#include<windows.h>
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,PSTR szCmdLine,int iCmdShow)
{
static TCHAR szAppname[]=TEXT("Keyboard&mouse events--*umayal*");
HWND hwnd;
MSG msg;
WNDCLASS WC;
WC.style = CS_HREDRAW|CS_VREDRAW;
WC.lpfnWndProc=WndProc;
WC.cbClsExtra =0;
WC.cbWndExtra =0;
WC.hInstance =hInstance;
WC.hIcon=LoadIcon(NULL,IDI_APPLICATION);
WC.hCursor=LoadCursor(NULL,IDC_ARROW);
WC.hbrBackground =(HBRUSH)GetStockObject(WHITE_BRUSH);
WC.lpszMenuName =NULL;
WC.lpszClassName=szAppname;
if(!RegisterClass(&WC))
{
MessageBox(NULL,TEXT("THIS PROGRAMREQ.WINDOWS NT"),
szAppname,MB_ICONERROR);
return 0;
}
hwnd=CreateWindow(szAppname,TEXT("Keyboard&mouse events...*umayal*"),WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL);
ShowWindow(hwnd,iCmdShow);
UpdateWindow(hwnd);
while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hwnd,UINT msg,WPARAM wParam,LPARAM lParam)
{
switch(msg)
{
case WM_LBUTTONDOWN:
MessageBox(GetFocus(),"you have pressed leftmouse button","MouseEvent...* *",
MB_OK|MB_ICONINFORMATION);
break;
case WM_RBUTTONDOWN:
MessageBox(GetFocus(),"you have pressed rightmouse button","MouseEvent...* *",
MB_OK|MB_ICONINFORMATION);
break;
case WM_KEYDOWN:
MessageBox(GetFocus(),"you have pressed keyboard button","keyboard...**",
MB_OK|MB_ICONINFORMATION);
break;
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd,msg,wParam,lParam);
}
return 0;
}
OUTPUT:
3. SDK TYPE PROGRAM FOR GDI OBJECTS.
SOURCE CODE:
#include<afxwin.h>
class myframe:public CFrameWnd
{
public:
myframe()
{
Create(0,"Line and Rectangle");
}
void OnPaint()
{
CPaintDC d(this);
CPen mypen(PS_SOLID,5,RGB(0,0,255));
CBrush mybrush(RGB(255,0,0));
d.SelectObject(&mypen);
d.SelectObject(&mybrush);
d.MoveTo(50,50);
d.LineTo(250,10);
d.Rectangle(50,100,250,200);
}
DECLARE_MESSAGE_MAP()
};
BEGIN_MESSAGE_MAP(myframe,CFrameWnd)
ON_WM_PAINT()
END_MESSAGE_MAP()
class myapp:public CWinApp
{
public:
int InitInstance()
{
myframe *p;
p=new myframe;
p->ShowWindow (3);
m_pMainWnd=p;
return 1;
}
};
myapp a;
OUTPUT:
4. SIMPLE DIALOG BASED APPLICATION FOR CALCULATOR
DESIGN:
SOURCE CODE:
void CCalcDlg::OnCompute() { UpdateData(TRUE);
switch(m_nOperation){case 0:
m_dResult=m_dLeft + m_dRight;break;
case 1:m_dResult=m_dLeft - m_dRight;break;
case 2:m_dResult=m_dLeft * m_dRight;break;
case 3:if(m_dRight!=0.0){
m_dResult=m_dLeft / m_dRight;}else{
AfxMessageBox("Divide by zero");m_dResult=0.0;
}
break; default:
TRACE("default:m_nOperation=%d\n",m_nOperation);}UpdateData(FALSE);
}
OUTPUT:
5. CREATING SINGLE DOCUMENT INTERFACE APPLICATION
SOURCE CODE:
void CSDIDrawView::OnDraw(CDC* pDC)
{ CSDIDrawDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);
pDC->Rectangle(50,100,300,150);
pDC->MoveTo(220,90);
pDC->LineTo(90,90);
pDC->TextOut(330,70,"LINE");
pDC->Ellipse(250,80,60,50);
pDC->TextOut(330,40,"ELLIPSE");
pDC->TextOut(330,180,"ARC");
pDC->TextOut(330,210,"CIRCLE");
pDC->Arc(250,170,150,190,200,119,50,1220);
pDC->Ellipse(200,200,250,250);
pDC->Pie(300,500,100,50,75,250,175,300);
pDC->TextOut(330,270,"PIE");
pDC->Rectangle(100,375,200,475);
pDC->TextOut(330,400,"SQUARE");
pDC->RoundRect(530,100,450,50,30,100);
pDC->TextOut(600,70,"RoundRect");
pDC->Chord(530,125,460,200,210,410,10,140);
pDC->TextOut(550,150,"CHORD");
}
OUTPUT:
6. CREATING MULTIPLE DOCUMENT INTERFACE APPLICATION
SOURCE CODE:
void CEx1_mdiView::OnLButtonDblClk(UINT nFlags, CPoint point)
{
char str[20];
CTime tm=CTime::GetCurrentTime();
sprintf(str,"it's now%02d:%02d:%02d",tm.GetHour(),
tm.GetMinute(),tm.GetSecond());
MessageBox(str,"it is time to quit?",MB_OK);
CView::OnLButtonDblClk(nFlags, point);
}
OUTPUT:
7. CREATING MODAL DIALOG
OUTPUT:
8. CREATING MODELESS DIALOG
DESIGN :
SOURCE CODE:
void CModelessdiaDlg::OnRunPgm()
{
UpdateData(TRUE);
CString strPgmName;
strPgmName=m_strRunPgm;
strPgmName.MakeUpper();
if(strPgmName=="NOTEPAD")
WinExec("notepad.exe",SW_SHOW);
if(strPgmName=="MSPAINT")
WinExec("mspaint.exe",SW_SHOW);
if(strPgmName=="FREECALL")
WinExec("freecall.exe",SW_SHOW);
if(strPgmName=="CALCULATOR")
WinExec("calc.exe",SW_SHOW);
if(strPgmName=="EXPLORER")
WinExec("explorer.exe",SW_SHOW);
if(strPgmName=="COMMAND")
WinExec("cmd.exe",SW_SHOW);
if(strPgmName=="TOURSTART")
WinExec("tourstart.exe",SW_SHOW);
}
OUTPUT:
9. PROGRAMMING FOR READING AND WRITING INTO DOCUMENTS
Code for Cline class
CLine::CLine(CPoint sp, CPoint ep)
{
startP=sp;
endP=ep;
}
void CLine::Draw(CDC *pDC)
{
CPen lpen(PS_SOLID,5,RGB(150,000,100));
CPen* Open=pDC->SelectObject(&lpen);
pDC->MoveTo(startP);
pDC->LineTo(endP);
pDC->SelectObject(Open);
}
void CLine::serialize(CArchive &ar)
{
CObject::Serialize(ar);
if(ar.IsStoring())
ar<<startP<<endP;
else
ar>>startP>>endP;
}
Code for CSerializeDoc class
CLine* CSerializeDoc::AddLine(CPoint sp, CPoint ep)
{
CLine*tLine=new CLine(sp,ep);
Lines.Add(tLine);
return tLine;
}
CLine* CSerializeDoc::GetLine(int nIndex)
{
return (CLine*)Lines[nIndex];
}
int CSerializeDoc::GetLineCount()
{
return Lines.GetSize();
}
void CSerializeDoc::DeleteContents()
{
int lcount=Lines.GetSize();
if(lcount)
{
int lposition;
for(lposition=0;lposition<lcount;lposition++)
{
delete Lines[lposition];
}
Lines.RemoveAll();
}
CDocument::DeleteContents();
}
void CSerializeView::OnLButtonDown(UINT nFlags, CPoint point)
{ SetCapture();
prev=point;
CView::OnLButtonDown(nFlags, point); }
void CSerializeView::OnLButtonUp(UINT nFlags, CPoint point)
{ if(GetCapture()==this)
ReleaseCapture();
CView::OnLButtonUp(nFlags, point); }
void CSerializeView::OnMouseMove(UINT nFlags, CPoint point)
{ if((nFlags&MK_LBUTTON)==MK_LBUTTON)
{ if(GetCapture()==this)
{ CClientDC dc(this);
CLine*tLine=GetDocument()->AddLine(prev,point);
tLine->Draw(&dc);
prev=point; } }
CView::OnMouseMove(nFlags, point); }
OUTPUT:
10. DYNAMIC CONTROL FOR SLIDER CONTROL
SOURCE CODE:
#include<afxwin.h>
#include<afxcmn.h>
class myframe:public CFrameWnd
{
private:
CSliderCtrl sli;
CButton gr;
public:
myframe()
{
CString mywindowclass;
mywindowclass=AfxRegisterWndClass(
CS_VREDRAW|CS_HREDRAW,0,
(HBRUSH)::GetStockObject(LTGRAY_BRUSH),0);
Create(mywindowclass,"Slider Control");
}
int OnCreate(LPCREATESTRUCT I)
{
CFrameWnd::OnCreate(I);
gr.Create("SLIDER DISPLAY",WS_CHILD|WS_VISIBLE|BS_GROUPBOX,CRect(30,30,310,100),this,1);
sli.Create(WS_CHILD|WS_VISIBLE|TBS_HORZ|TBS_AUTOTICKS|TBS_BOTTOM|TBS_ENABLESELRANGE,CRect(35,50,305,90),this,2);
sli.SetRange(0,8);
sli.SetPos(2);
sli.SetSelection(0,2);
sli.SetPageSize(3);
return 0;
}
void OnHScroll(UINT code,UINT pos,CScrollBar *scroll)
{
switch(code)
{
case TB_LINEUP:
case TB_LINEDOWN:
case TB_PAGEUP:
case TB_PAGEDOWN:
case TB_TOP:
case TB_BOTTOM:
pos=sli.GetPos();
sli.SetSelection(0,pos);
sli.SetTic(pos);
break;
case TB_THUMBPOSITION:
sli.SetSelection(0,pos);
sli.SetTic(pos);
break;
case TB_THUMBTRACK:
sli.SetSelection(0,pos);
sli.SetTic(pos);
break;
}
}
DECLARE_MESSAGE_MAP()
};
BEGIN_MESSAGE_MAP(myframe,CFrameWnd)
ON_WM_CREATE()
ON_WM_HSCROLL()
END_MESSAGE_MAP()
class myapp:public CWinApp
{
public:
int InitInstance()
{
myframe *p;
p=new myframe;
p->ShowWindow(3);
m_pMainWnd=p;
return 1;
}
}; myapp a;
OUTPUT:
11. DYNAMIC CONTROL FOR TREE VIEW CREATION
SOURCE CODE:
#include<afxwin.h>
#include<afxcmn.h>
class myframe:public CFrameWnd
{
private:
CTreeCtrl tree;
public:
myframe()
{
Create(0,"Tree view control");
}
int OnCreate(LPCREATESTRUCT I)
{
HTREEITEM lang,opersys,c,cpp,java;
CFrameWnd::OnCreate(I);
tree.Create(WS_CHILD|WS_VISIBLE|WS_BORDER|TVS_HASLINES|TVS_LINESATROOT|TVS_HASBUTTONS|TVS_SHOWSELALWAYS,CRect(30,30,300,350),this,1);
lang=tree.InsertItem("Computer languages",TVI_ROOT,TVI_SORT);
c=tree.InsertItem("C",lang,TVI_SORT);
tree.InsertItem("TC",c);
tree.InsertItem("QC",c);
tree.InsertItem("MSC",c);
cpp=tree.InsertItem("c++",lang,TVI_SORT);
tree.InsertItem("VC++",cpp);
tree.InsertItem("Borland c++",cpp);
java=tree.InsertItem("java",lang,TVI_SORT);
tree.InsertItem("VJ++",java);
tree.InsertItem("Symantec cafe",java);
tree.InsertItem("Sun JDK",java);
opersys=tree.InsertItem("operating systems",TVI_ROOT,TVI_SORT);
tree.InsertItem("win 3.1",opersys);
tree.InsertItem("win 95",opersys);
tree.InsertItem("win NT",opersys);
return 0;
}
int OnNotify(WPARAM w,LPARAM I,LRESULT *r)
{
HTREEITEM h;
CString str;
CWnd::OnNotify(w,I,r);
NM_TREEVIEW *p=(NM_TREEVIEW *)I;
if(p->hdr.code==TVN_SELCHANGED)
{
h=tree.GetSelectedItem();
str=tree.GetItemText(h);
MessageBox(str,"you have selected");
}
return 1;
}
DECLARE_MESSAGE_MAP()
};
BEGIN_MESSAGE_MAP(myframe,CFrameWnd)
ON_WM_CREATE()
END_MESSAGE_MAP()
class myapp:public CWinApp
{
public:
int InitInstance()
{
myframe *p;
p=new myframe;
p->ShowWindow(3);
m_pMainWnd=p;
return 1;
}
}; myapp a;
OUTPUT:
12. CREATING AND DYNAMIC SPLITTER WINDOW
SOURCE CODE:
BOOL CMainFrame::OnCreateClient( LPCREATESTRUCT /*lpcs*/,
CCreateContext* pContext)
{
return m_wndSplitter.Create( this,
2, 2, // TODO: adjust the number of rows, columns
CSize(10, 10), // TODO: adjust the minimum pane size
pContext);
}
1. Build and run the project.
OUTPUT:
13.CREATING DLLS AND USING THEM.
// RegDLL.cpp : Defines the initialization routines for the DLL.
#include "stdafx.h"#include "RegDLL.h"
#ifdef _DEBUG#define new DEBUG_NEW#undef THIS_FILEstatic char THIS_FILE[] = _ _FILE_ _;#endif
(generated comment lines omitted)
//////////////////////////////////////////////////////////////////////// CRegDLLApp
BEGIN_MESSAGE_MAP(CRegDLLApp, CWinApp) //{{AFX_MSG_MAP(CRegDLLApp) // NOTE - the ClassWizard will add and remove mapping macros here. // DO NOT EDIT what you see in these blocks of generated code! //}}AFX_MSG_MAPEND_MESSAGE_MAP()
// CRegDLLApp construction
CRegDLLApp::CRegDLLApp(){ // TODO: add construction code here, // Place all significant initialization in InitInstance}
// The one and only CRegDLLApp object
CRegDLLApp theApp;
extern "C" __declspec(dllexport) long RegDLLFactorial(long f){ long fact=1; AFX_MANAGE_STATE(AfxGetStaticModuleState()); TRACE("Entering RegDLLSquareRoot\n");
while (f>0){
fact=fact*f; f--;
}
return (fact);}
To create a test client application :
void CRegDLLTestDialog::OnFact() {
UpdateData(TRUE);m_dOutput=RegDLLFactorial(m_dInput);UpdateData(FALSE);
}
You'll have to declare the RegDLLFactorial function as an imported function. Add the following line to the RegDLLTestDialog.h file:
extern "C" __declspec(dllimport) long RegDLLFactorial(long f)
void CRegDLLTestView::OnTestRegdll() { CRegDLLTestDialog dlg; dlg.DoModal();}
OUTPUT:
14. WINSOCK AND WININET & INTERNET EXPLORER COMMON CONTROLS.
15. DATA ACCESS THROUGH ODBC – CDATABASE, CRECORDSET.
DESIGN:
SOURCE CODE:
BOOL CDatabaseView::OnMove(UINT nIDMoveCommand)
{
switch(nIDMoveCommand)
{
case ID_RECORD_PREV:
m_pSet->MovePrev();
if(!m_pSet->IsBOF())
break;
case ID_RECORD_FIRST:
m_pSet->MoveFirst();
break;
case ID_RECORD_NEXT:
m_pSet->MoveNext();
if(!m_pSet->IsEOF())
break;
if(!m_pSet->CanScroll())
{
m_pSet->SetFieldNull(NULL);
break;
}
case ID_RECORD_LAST:
m_pSet->MoveLast();
break;
default:
ASSERT(FALSE);
}
UpdateData(FALSE);
return TRUE;
}
void CDatabaseView::OnAddRecord()
{
m_pSet->AddNew();
UpdateData(TRUE);
if(m_pSet->CanUpdate())
{
m_pSet->Update();
}
if(!m_pSet->IsEOF())
{
m_pSet->MoveLast();
}
m_pSet->Requery();
UpdateData(FALSE);
}
void CDatabaseView::OnClearfieldsRecord()
{
m_pSet->SetFieldNull(NULL);
UpdateData(FALSE);
}
void CDatabaseView::OnDeleteRecord()
{
CRecordsetStatus status;
try{
m_pSet->Delete();
}
catch(CDBException* e)
{
AfxMessageBox(e->m_strError);
e->Delete();
m_pSet->MoveFirst();
UpdateData(FALSE);
return;
}
m_pSet->GetStatus(status);
if(status.m_lCurrentRecord==0)
{
m_pSet->MoveFirst();
}
else
{
m_pSet->MoveNext();
}
UpdateData(FALSE);
}
void CDatabaseView::OnUpdateDeleteRecord(CCmdUI* pCmdUI)
{
pCmdUI->Enable(!m_pSet->IsEOF());
}
void CDatabaseView::OnUpdateRecord()
{
m_pSet->Edit();
UpdateData(TRUE);
if(m_pSet->CanUpdate())
{
m_pSet->Update();
}
}
void CDatabaseView::OnUpdateUpdateRecord(CCmdUI* pCmdUI)
{
pCmdUI->Enable(!m_pSet->IsEOF());
}
OUTPUT:
16. CREATING ACTIVEX CONTROL AND USING IT.
PROCEDURE:
Steps for building the calendar application:
1. Verify that the Calendar control is registered.
If the control does not appear in the Visual C++ Gallery's Registered ActiveX Controls page, copy the files MSCal.ocx, MSCal.hlp, and MSCal.cnt to your system directory and register the control by running the REGCOMP program.
2. Run AppWizard to produce \vcpp32\ ActiveX.
a. Select Single Document in Step 1b. In step3, make sure the ActiveX Controls option is selected.c. Deselect Printing and Print Preview in step 4 of 6. d. In the AppWizard Step 3 dialog, make sure the ActiveX Controls option is
selected.
3. Install the Calendar control in the Calendar project.
a. Choose Add To Project from Visual C++'s Project menu, and then choose Components And Controls.
b. Choose Registered ActiveX Controls, and then choose Calendar Control 8.0.c. ClassWizard generates two classes in the ActiveX directory, as shown here.
4. Edit the Calendar control class to handle help messages.
a. Add Calendar.cpp to the following message map code:
BEGIN_MESSAGE_MAP(CCalendar, CWnd) ON_WM_HELPINFO()END_MESSAGE_MAP()
b. In the same file, add the OnHelpInfo function:
BOOL CCalendar::OnHelpInfo(HELPINFO* pHelpInfo) { // Edit the following string for your system
::WinHelp(GetSafeHwnd(),
"c:\\winnt\\system32\\mscal.hlp",HELP_FINDER, 0);
return FALSE;}
c. In Calendar.h, add the function prototype and declare the message map:
protected:
afx_msg BOOL OnHelpInfo(HELPINFO* pHelpInfo);
DECLARE_MESSAGE_MAP()
The OnHelpInfo function is called if the user presses the F1 key when the Calendar control has the input focus. We have to add the message map code by hand because ClassWizard doesn't modify generated ActiveX classes.
5. Use the dialog editor to create a new dialog resource.
a. Choose Resource from Visual C++'s Insert menu, and then choose Dialog.
b. The dialog editor assigns the ID IDD_DIALOG1 to the new dialog.
c. Next change the ID to IDD_ACTIVEXDIALOG, change the dialog caption to
ActiveX Dialog, and set the dialog's Context Help property (on the More Styles
page).
d. Accept the default OK and Cancel buttons with the IDs IDOK and IDCANCEL,
and then add the other controls.
e. Then add the other controls as shown below:
f. Make the Select Date button as the default button.
g. Drag the Calendar control from the control palette.
h. Then set an appropriate tab order.
i. Assign control IDs as shown in the following table.
Control ID
Calendar control IDC_CALENDAR1
Select Date button IDC_SELECTDATE
Edit control IDC_DAY
Edit control IDC_MONTH
Edit control IDC_YEAR
Next Week button IDC_NEXTWEEK
6. Use ClassWizard to create the CActiveXDialog class.
a. If you run ClassWizard directly from the dialog editor window, it will know that
you want to create a CDialog-derived class based on the
IDD_ACTIVEXDIALOG template.
b. Simply accept the default options, and name the class CActiveXDialog.
c. Click on the ClassWizard Message Maps tab, and then add the message handler
functions shown in the table below.
d. To add a message handler function, click on an object ID, click on a message,
and click the Add Function button.
e. If the Add Member Function dialog box appears, type the function name and
click the OK button.
Object ID Message Member Function
CActiveXDialog WM_INITDIALOG OnInitDialog (virtual function)
IDC_CALENDAR1 NewMonth (event) OnNewMonthCalendar1
IDC_SELECTDATE BN_CLICKED OnSelectDate
IDC_NEXTWEEK BN_CLICKED OnNextWeek
IDOK BN_CLICKED OnOK (virtual function)
7. Use ClassWizard to add data members to the CActiveXDialog class.
a. Click on the Member Variables tab, and then add the data members as shown in the illustration below.
b. You might think that the ClassWizard ActiveX Events tab is for mapping ActiveX control events in a container.
c. That's not true: it's for ActiveX control developers who are defining events for a control.
8. Edit the CActiveXDialog class.
a. Add the m_varValue and m_BackColor data members.
b. Edit the code for the five handler functions OnInitDialog, nNewMonthCalendar1,
OnSelectDate, OnNextWeek, and OnOK.
9. Add the following boldface code in the ACTIVEXDIALOG.H
Public:
COleVariant m_varValue;
unsigned long m_BackColor;
Note: declare these 2 variables at the end of the Dialog Data section.
10. Edit the ACTIVEXDIALOG.CPP
a. Add the following boldface code.
CActiveXDialog::CActiveXDialog(CWnd* pParent /*=NULL*/)
: CDialog(CActiveXDialog::IDD, pParent){ // {{AFX_DATA_INIT (CActiveXDialog)
m_sDay = 0;
m_sMonth = 0;
m_sYear = 0;
//}}AFX_DATA_INIT
m_BackColor = 0x8000000F;}
void CActiveXDialog::DoDataExchange(CDataExchange* pDX){ CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CActiveXDialog)
DDX_Control(pDX, IDC_CALENDAR1, m_calendar);
DDX_Text(pDX, IDC_DAY, m_sDay);
DDX_Text(pDX, IDC_MONTH, m_sMonth);
DDX_Text(pDX, IDC_YEAR, m_sYear);
//}}AFX_DATA_MAP
DDX_OCColor(pDX, IDC_CALENDAR1, DISPID_BACKCOLOR,
m_BackColor);}BOOL CActiveXDialog::OnInitDialog()
{
CDialog::OnInitDialog();
m_calendar.SetValue(m_varValue); // no DDX for VARIANTs
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}
void CActiveXDialog::OnNewMonthCalendar1()
{
AfxMessageBox("EVENT: CActiveXDialog::OnNewMonthCalendar1");
}
void CActiveXDialog::OnSelectDate()
{
CDataExchange dx(this, TRUE);
DDX_Text(&dx, IDC_DAY, m_sDay);
DDX_Text(&dx, IDC_MONTH, m_sMonth);
DDX_Text(&dx, IDC_YEAR, m_sYear);
m_calendar.SetDay(m_sDay);
m_calendar.SetMonth(m_sMonth);
m_calendar.SetYear(m_sYear);
}
void CActiveXDialog::OnNextWeek()
{
m_calendar.NextWeek();
}
void CActiveXDialog::OnOK()
{
CDialog::OnOK();
m_varValue = m_calendar.GetValue(); // no DDX for VARIANTs
}
11. The OnSelectDate function is called when the user clicks the Select Date button. The
function gets the day, month, and year values from the three edit controls and
transfers them to the control's properties. ClassWizard can't add DDX code for the
BackColor property, so you must add it by hand. In addition, there's no DDX code for
VARIANT types, so you must add code to the OnInitDialog and OnOK functions to
set and retrieve the date with the control's Value property.
12. Connect the dialog to the view.
a. Use ClassWizard to map the WM_LBUTTONDOWN message, and then edit the handler function as follows:
void ActiveXView::OnLButtonDown(UINT nFlags, CPoint point)
{
CActiveXDialog dlg;
dlg.m_BackColor = RGB(255, 251, 240); // light yellow
COleDateTime today = COleDateTime::GetCurrentTime();
dlg.m_varValue = COleDateTime(today.GetYear(), today.GetMonth(),
today.GetDay(), 0, 0, 0);
if (dlg.DoModal() == IDOK) {
COleDateTime date(dlg.m_varValue);
AfxMessageBox(date.Format("%B %d, %Y"));
}
}
The code sets the background color to light yellow and the date to today's date, displays the modal dialog, and reports the date returned by the Calendar control.
Then need to include the following in ActiveXView.cpp.
#include “ActiveXDialog.h”
13. Edit the virtual OnDraw function in the file ActiveXView.cpp.
a. To prompt the user to press the left mouse button, replace the code in the view class OnDraw function with this single line:
pDC->TextOut(0, 0, "Press the left mouse button here);
OUTPUT :