{

unsigned frame;

IPicture * logos[2];

POINT ptSize;

HBITMAP backbuffer;

HBITMAP frames[2];

BEGIN_MSG_MAP( GEPCtrl )

MESSAGE_HANDLER( WM_CREATE, OnCreate )

MESSAGE_HANDLER( WM_TIMER, OnTimer )

MESSAGE_HANDLER( WM_PAINT, OnPaint )

MESSAGE_HANDLER( WM_DESTROY, OnDestroy )

END_MSG_MAP()

LRESULT OnCreate(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)

{

HMODULE hInst = core_api::get_my_instance();

frame = 0;

logos[0] = LoadPic(MAKEINTRESOURCE(IDB_LOGO1), _T("JPG"), hInst);

logos[1] = LoadPic(MAKEINTRESOURCE(IDB_LOGO2), _T("JPG"), hInst);

IPicture_getHandle(logos[0], (OLE_HANDLE *)&frames[0]);

IPicture_getHandle(logos[1], (OLE_HANDLE *)&frames[1]);

BITMAP bm;

GetObject( frames[0], sizeof(bm), &bm );

ptSize.x = bm.bmWidth;

ptSize.y = bm.bmHeight;

BITMAPINFOHEADER bmih;

bmih.biSize = sizeof(bmih);

bmih.biWidth = bm.bmWidth;

bmih.biHeight = bm.bmHeight;

bmih.biPlanes = bm.bmPlanes;

bmih.biBitCount = bm.bmBitsPixel;

bmih.biCompression = BI_RGB;

bmih.biSizeImage = 0;

bmih.biXPelsPerMeter = 0;

bmih.biYPelsPerMeter = 0;

bmih.biClrUsed = 0;

bmih.biClrImportant = 0;

BYTE * gfx;

backbuffer = CreateDIBSection(0, (const BITMAPINFO *) &bmih, DIB_RGB_COLORS, (VOID **) &gfx, 0, 0);

SetWindowPos( 0, 0, 0, ptSize.x, ptSize.y, SWP_NOMOVE | SWP_NOREDRAW | SWP_NOZORDER );

SetTimer( 0, 10 );

return 0;

}

LRESULT OnTimer(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)

{

frame++;

if (frame >= 1000) frame = 0;

if (!frame ||

(frame - 400 <= 100) ||

(frame >= 900))

{

RECT rc;

GetClientRect( &rc );

InvalidateRect( &rc, FALSE );

}

return 0;

}

LRESULT OnPaint(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)

{

PAINTSTRUCT ps;

HDC hdc = BeginPaint( &ps );

HDC hdcMem, hdcBB;

HBITMAP hbmOld, hbmOldBB;

BLENDFUNCTION func = { AC_SRC_OVER, 0, 0, 0 };

ps.rcPaint.right -= ps.rcPaint.left;

ps.rcPaint.bottom -= ps.rcPaint.top;

if (frame < 400)

{

hdcMem = CreateCompatibleDC( hdc );

hbmOld = (HBITMAP) SelectObject( hdcMem, frames[0] );

BitBlt( hdc, ps.rcPaint.left, ps.rcPaint.top,

ps.rcPaint.right, ps.rcPaint.bottom, hdcMem,

ps.rcPaint.left, ps.rcPaint.top, SRCCOPY);

SelectObject( hdcMem, hbmOld );

DeleteDC( hdcMem );

}

else if (frame < 500)

{

hdcBB = CreateCompatibleDC( hdc );

hbmOldBB = (HBITMAP) SelectObject( hdcBB, backbuffer );

hdcMem = CreateCompatibleDC( hdc );

hbmOld = (HBITMAP) SelectObject( hdcMem, frames[0] );

BitBlt( hdcBB, ps.rcPaint.left, ps.rcPaint.top,

ps.rcPaint.right, ps.rcPaint.bottom, hdcMem,

ps.rcPaint.left, ps.rcPaint.top, SRCCOPY);

SelectObject( hdcMem, frames[1] );

func.SourceConstantAlpha = (frame - 400) * 255 / 100;

AlphaBlend( hdcBB, ps.rcPaint.left, ps.rcPaint.top,

ps.rcPaint.right, ps.rcPaint.bottom, hdcMem,

ps.rcPaint.left, ps.rcPaint.top,

ps.rcPaint.right, ps.rcPaint.bottom, func);

SelectObject( hdcMem, hbmOld );

DeleteDC( hdcMem );

BitBlt( hdc, ps.rcPaint.left, ps.rcPaint.top,

ps.rcPaint.right, ps.rcPaint.bottom, hdcBB,

ps.rcPaint.left, ps.rcPaint.top, SRCCOPY);

SelectObject( hdcBB, hbmOldBB );

DeleteDC( hdcBB );

}

else if (frame < 900)

{

hdcMem = CreateCompatibleDC( hdc );

hbmOld = (HBITMAP) SelectObject( hdcMem, frames[1] );

BitBlt( hdc, ps.rcPaint.left, ps.rcPaint.top,

ps.rcPaint.right, ps.rcPaint.bottom, hdcMem,

ps.rcPaint.left, ps.rcPaint.top, SRCCOPY);

SelectObject( hdcMem, hbmOld );

DeleteDC( hdcMem );

}

else if (frame < 1000)

{

hdcBB = CreateCompatibleDC( hdc );

hbmOldBB = (HBITMAP) SelectObject( hdcBB, backbuffer );

hdcMem = CreateCompatibleDC( hdc );

hbmOld = (HBITMAP) SelectObject( hdcMem, frames[1] );

BitBlt( hdcBB, ps.rcPaint.left, ps.rcPaint.top,

ps.rcPaint.right, ps.rcPaint.bottom, hdcMem,

ps.rcPaint.left, ps.rcPaint.top, SRCCOPY);

SelectObject( hdcMem, frames[0] );

func.SourceConstantAlpha = (frame - 900) * 255 / 100;

AlphaBlend( hdcBB, ps.rcPaint.left, ps.rcPaint.top,

ps.rcPaint.right, ps.rcPaint.bottom, hdcMem,

ps.rcPaint.left, ps.rcPaint.top,

ps.rcPaint.right, ps.rcPaint.bottom, func);

SelectObject( hdcMem, hbmOld );

DeleteDC( hdcMem );

BitBlt( hdc, ps.rcPaint.left, ps.rcPaint.top,

ps.rcPaint.right, ps.rcPaint.bottom, hdcBB,

ps.rcPaint.left, ps.rcPaint.top, SRCCOPY);

SelectObject( hdcBB, hbmOldBB );

DeleteDC( hdcBB );

}

EndPaint( &ps );

return 0;

}

LRESULT OnDestroy(UINT /*uMsg*/, WPARAM /*wParam*/, LPARAM /*lParam*/, BOOL& /*bHandled*/)

{

KillTimer( 0 );

IPicture_Release(logos[0]);

IPicture_Release(logos[1]);

DeleteObject(backbuffer);

return 0;

}

void OnFinalMessage( HWND )

{

delete this;

}

public:

DECLARE_WND_CLASS(NULL);

GEPCtrl( HWND p_parent, RECT & p_rect )

{

Create( p_parent, p_rect );

}

{

RECT r;

r.left = x; r.top = y;

r.right = 0; r.bottom = 0;

return !! new GEPCtrl( parent, r );