Bitmap Background in CFormView

[lsb]

Hello.
I Want to use bitmap background in CFormView.
Please Show me the way.

Bye.

[PeterK]

Several methods will need to change. Here is an example:

These member variables will be needed:
int m_bitmapLeft;
int m_bitmapTop;
CBitmap m_bitmap;

void CFormcntlView::OnInitialUpdate()
{
CView::OnInitialUpdate();

int tmpNum;
int statusBarHeight=0;
// screen resolution
RECT tmpRec;

// window area minus task bar
SystemParametersInfo( SPI_GETWORKAREA, 0, &tmpRec, 0);

WINDOWPLACEMENT wndPlace;
wndPlace.length = sizeof(WINDOWPLACEMENT);
CMainFrame* pFrame = (CMainFrame*)GetParent();
pFrame->m_wndStatusBar.GetWindowPlacement(&wndPlace);
statusBarHeight = wndPlace.rcNormalPosition.bottom - wndPlace.rcNormalPosition.top;
// status bar positions not set yet
statusBarHeight = 18;

m_bitmap.LoadBitmap(IDB_MYBITMAPRESOURCE);
BITMAP bm;
m_bitmap.GetBitmap(&bm);

tmpNum = tmpRec.bottom - tmpRec.top;
// not sure why it needs to be times 3 but it works that way
tmpNum -= (statusBarHeight * 3);
if ( 0 > (tmpNum - bm.bmHeight))
{
m_bitmapTop = 0;
}
else
{
m_bitmapTop = (tmpNum - bm.bmHeight) / 2;
}

// width of bitmap
tmpNum = tmpRec.right - tmpRec.left;
if ( 0 > (tmpNum - bm.bmWidth))
{
m_bitmapLeft = 0;
}
else
{
m_bitmapLeft = (tmpNum - bm.bmWidth) / 2;
}
}

void CFormcntlView::OnDraw(CDC* pDC)
{
CFormcntlDoc* pDoc = GetDocument();
ASSERT_VALID(pDoc);

// TODO: add draw code for native data here
CDC dc;
dc.CreateCompatibleDC(pDC);
CBitmap* pBitmap = dc.SelectObject(&m_bitmap);

int xValue, yValue;
xValue = GetSystemMetrics(SM_CXSCREEN);
yValue = GetSystemMetrics(SM_CYSCREEN);

pDC->BitBlt(m_bitmapLeft, m_bitmapTop, xValue, yValue, &dc, 0, 0, SRCAND);
dc.SelectObject(pBitmap);
}

BOOL CFormcntlView::OnEraseBkgnd(CDC* pDC)
{
// TODO: Add your message handler code here and/or call default
CRect clientRct;
pDC->GetClipBox(&clientRct);

RECT rct;
BITMAP bm;
m_bitmap.GetBitmap(&bm);
rct.left = m_bitmapLeft;
rct.top = m_bitmapTop;
rct.right = m_bitmapLeft + bm.bmWidth;
rct.bottom = m_bitmapTop + bm.bmHeight;

CBrush brushBack(RGB(192,192,192)); // Gray
CBrush* pOldBrush = pDC->SelectObject(&brushBack);
pDC->PatBlt(clientRct.left, clientRct.top, clientRct.Width(), clientRct.Height(), PATCOPY);

CBrush brushWhiteBack(RGB(255,255,255)); // White
CRgn bitmapRegion;
bitmapRegion.CreateRectRgnIndirect(&rct);
pDC->FillRgn(&bitmapRegion, &brushWhiteBack);

pDC->SelectObject(pOldBrush);

return(TRUE);
}