I'm trying to add a bitmap,here is the code.......

[dringer]

Could anyone tell me where i'm going wrong,(using visual studio 6)
please
regards

here is the code:


#include <afxwin.h>

#define IDB_BITMAP 100


// Declare the application class
class CBitmapApp : public CWinApp
{
public:
virtual BOOL InitInstance();
};
// Create an instance of the application class
CBitmapApp BitmapApp;

// Declare the main window class
class CBitmapWindow : public CFrameWnd
{
CBitmap *bitmap;


public:
CBitmapWindow();
afx_msg void HandleBitmap();
afx_msg void OnSize(UINT, int, int); // USED FOR RESIZING
afx_msg void OnPaint();
DECLARE_MESSAGE_MAP()

};







// The message map
BEGIN_MESSAGE_MAP(CBitmapWindow, CFrameWnd)
ON_BN_CLICKED(IDB_BITMAP, HandleBitmap)
ON_WM_SIZE() //RESIZE

END_MESSAGE_MAP()

// The InitInstance function is called once
// when the application first executes
BOOL CBitmapApp::InitInstance()
{
m_pMainWnd = new CBitmapWindow();
m_pMainWnd->ShowWindow(m_nCmdShow);
m_pMainWnd->UpdateWindow();
return TRUE;
}


// The constructor for the window class
/*CBitmapWindow::CBitmapWindow()
{
CRect r;
// Create the window itself
Create(NULL,
&quot;CBitmap Tests&quot;,
WS_OVERLAPPEDWINDOW,
CRect(0,0,200,200));



// Get the size of the client rectangle
GetClientRect(&r);
r.InflateRect(-20,-20);
// Create a button
bitmap = new CBitmap();
bitmap->Create(&quot;Push me&quot;,
WS_CHILD|WS_VISIBLE|BS_PUSHBITMAP,
r,
this,
IDB_BITMAP);




}*/



BOOL GetBitmapAndPalette(UINT nIDResource, CBitmap &bitmap, CPalette &pal)
{
LPCTSTR lpszResourceName = (LPCTSTR)nIDResource;

HBITMAP hBmp = (HBITMAP)::LoadImage( AfxGetInstanceHandle(),
lpszResourceName, IMAGE_BITMAP, 0,0, LR_CREATEDIBSECTION );

if( hBmp == NULL )
return FALSE;

bitmap.Attach( hBmp );

// Create a logical palette for the bitmap
DIBSECTION ds;
BITMAPINFOHEADER &bmInfo = ds.dsBmih;
bitmap.GetObject( sizeof(ds), &ds );

int nColors = bmInfo.biClrUsed ? bmInfo.biClrUsed : 1 << bmInfo.biBitCount;

// Create a halftone palette if colors > 256.
CClientDC dc(NULL); // Desktop DC
if( nColors > 256 )
pal.CreateHalftonePalette( &dc );
else
{
// Create the palette

RGBQUAD *pRGB = new RGBQUAD[nColors];
CDC memDC;
memDC.CreateCompatibleDC(&dc);

memDC.SelectObject( &bitmap );
::GetDIBColorTable( memDC, 0, nColors, pRGB );

UINT nSize = sizeof(LOGPALETTE) + (sizeof(PALETTEENTRY) * nColors);
LOGPALETTE *pLP = (LOGPALETTE *) new BYTE[nSize];

pLP->palVersion = 0x300;
pLP->palNumEntries = nColors;

for( int i=0; i < nColors; i++)
{
pLP->palPalEntry.peRed = pRGB.rgbRed;
pLP->palPalEntry.peGreen = pRGB.rgbGreen;
pLP->palPalEntry.peBlue = pRGB.rgbBlue;
pLP->palPalEntry.peFlags = 0;
}

pal.CreatePalette( pLP );

delete[] pLP;
delete[] pRGB;
}

return TRUE;
}



void CBitmapWindow::OnPaint()
{
CPaintDC dc(this);

// Create a memory DC compatible with the paint DC
CDC memDC;
memDC.CreateCompatibleDC( &dc );

CBitmap bitmap;
CPalette palette;

GetBitmapAndPalette( IDB_BITMAP, bitmap, palette );
memDC.SelectObject( &bitmap );

// Select and realize the palette
if( dc.GetDeviceCaps(RASTERCAPS) & RC_PALETTE && palette.m_hObject != NULL )
{
dc.SelectPalette( &palette, FALSE );
dc.RealizePalette();
}
dc.BitBlt(0, 0, 180, 180, &memDC, 0, 0,SRCCOPY);
}