bitmap over on another bitmap

[anand kumar]

sir,
i need some help in creating a bitmap over

another bitmap, firstly i have created bitmap

object in doc class, in view class ondraw

function i am displaying this bitmap and in

lbutton mouse click i am placing a bitmap on

the view as well as on the bitmap which i

have declared in doc class, after updateing

all views i am not unable to see the bitmap.

i have given the code below,
help will be appreciated.
void CBitmapnetdgView::OnLButtonDblClk(UINT

nFlags, CPoint point)
{
// TODO: Add your message handler

code here and/or call default

CDC *winDC;
CBitmapnetdgDoc* pDoc = GetDocument();
CDC compatDC;
CBitmap *oldBump;
winDC=GetDC();

compatDC.CreateCompatibleDC(winDC);
compatDC.SetMapMode(MM_TEXT);
compatDC.SetWindowOrg(CPoint(0,0));



oldBump=compatDC.SelectObject(&pDoc->cMouseBm

p);
CPoint pn=compatDC.GetWindowOrg();
Cnode sy;
bool fnd=false;

CClientDC

dc(this);
CDC

memdc1;


//memdc1=GetDC();
CBitmap

m_Bitmap1;


memdc1.CreateCompatibleDC(&dc);


memdc1.SetMapMode(MM_TEXT);;


memdc1.SetWindowOrg(CPoint(0,0));



m_Bitmap1.LoadBitmap(IDB_BITMAP1);


winDC->SelectObject(&m_Bitmap1);


memdc1.SelectObject(&m_Bitmap1);



fnd=true;
CPoint pd;
pd.x=100;
pd.y=100;


dc.BitBlt(pd.x,pd.y,20,20,&memdc1,0,0,SRCCOPY

);




compatDC.BitBlt(pd.x,pd.y,20,20,winDC,0,0,SRC

COPY);

int

mode1=memdc1.GetMapMode();
CPoint

Org1=memdc1.GetViewportOrg();
int

mode2=winDC->GetMapMode();
CPoint

Org2=winDC->GetViewportOrg();
CPen

pen;


pen.CreatePen(PS_SOLID, 1,RGB(255,0,0));


winDC->SelectObject(&pen);


winDC->MoveTo(90,90);
winDC->LineTo(95,95);

ReleaseDC(winDC);


CView::OnLButtonDblClk(nFlags,

point);
}



void CBitmapnetdgView::OnDraw(CDC* pDC)
{
CBitmapnetdgDoc* pDoc =

GetDocument();
ASSERT_VALID(pDoc);
// TODO: add draw code for native

data here

// pDC->SetViewportExt(0,0);

CDC compatDC;
CBitmap * oldBmp;
int screenWidth;
int screenHight;


screenWidth=GetSystemMetrics(SM_CXSCREEN);


screenHight=GetSystemMetrics(SM_CYSCREEN);
compatDC.CreateCompatibleDC(pDC);


oldBmp=compatDC.SelectObject(&pDoc->cMouseBmp

);
CDC cTempDC;
cTempDC.Attach(compatDC);


pDC->BitBlt(0,0,screenWidth,screenHight,&cTem

pDC,0,0,SRCCOPY);
cTempDC.Detach();

compatDC.SelectObject(oldBmp);
DeleteDC(compatDC);
TRACE("VIEW\n");
}
bye,bye
anand