static void DoScroll( HWND wnd, int dx, int dy, BOOL lock )
/*********************************************************/
{
/* scroll 'wnd' by 'dx' and 'dy'. 'lock' says to lock the scrolling on the */
/* bottom and right into the scrolling rectangle */
POINT offset;
RECT srect;
GetOffset( &offset );
GetScrollBounds( &srect, lock );
dx = AdjustScroll( offset.x, srect.left, srect.right, dx );
dy = AdjustScroll( offset.y, srect.top, srect.bottom, dy );
if( dx != 0 || dy != 0 ) {
offset.x += dx;
offset.y += dy;
SetOffset( offset );
ScrollWindow( wnd, -dx, -dy, NULL, NULL );
if( GetScrollConfig() & SCROLL_HORZ ) {
SetScrollPos( wnd, SB_HORZ, offset.x, TRUE );
}
if( GetScrollConfig() & SCROLL_VERT ) {
SetScrollPos( wnd, SB_VERT, offset.y, TRUE );
}
}
}
//***************************************************************************
void CBCGPDropDownList::HighlightItem (int nIndex)
{
ASSERT_VALID (this);
CBCGPPopupMenuBar* pMenuBar = GetMenuBar ();
ASSERT_VALID (pMenuBar);
if (nIndex < 0)
{
return;
}
pMenuBar->m_iHighlighted = nIndex;
SCROLLINFO scrollInfo;
ZeroMemory(&scrollInfo, sizeof(SCROLLINFO));
scrollInfo.cbSize = sizeof(SCROLLINFO);
scrollInfo.fMask = SIF_ALL;
m_wndScrollBarVert.GetScrollInfo (&scrollInfo);
int iOffset = nIndex;
int nMaxOffset = scrollInfo.nMax;
iOffset = min (max (0, iOffset), nMaxOffset);
if (iOffset != pMenuBar->GetOffset ())
{
pMenuBar->SetOffset (iOffset);
m_wndScrollBarVert.SetScrollPos (iOffset);
AdjustScroll ();
}
}