多文档程序 设置了子窗口style为WS_HSCROLL 怎么用

[fire2008hqy]

设置了WS_HSCROLL 添加了响应OnHScroll 但是完全没有反应，我这不是对话框添加的控件，我不知道直接设置了WS_HSCROLL这个东西的ID是什么，我觉得好像OnHScroll 和WS_HSCROLL 没关联起来一样。。。是不是应该在VIEW类里面加上什么东西啊

[用户 昵称]

在你的view的PreCreateWindow中添加
cs.style=cs.style|WS_HSCROLL|WS_VSCROLL;

[用户 昵称]

void CMyView::Create(CWnd *pParentWnd, const RECT &rect, UINT nID, DWORD dwStyle)
{
    CView::Create(NULL, "", dwStyle, rect, pParentWnd, nID);

    m_HScrollBar.Create( SBS_HORZ | SBS_TOPALIGN, CRect( rect.left, rect.bottom, rect.right - rect.left, 20), pParentWnd, 0 );
    m_HScrollBar.ShowScrollBar();
}

[用户 昵称]

BOOL
CSmartEditorView::PreCreateWindow(CREATESTRUCT& cs) 
{
	// TODO: Add your specialized code here and/or call the base class
	
	CWnd *pParentWnd = CWnd::FromHandlePermanent( cs.hwndParent );
	if( NULL == pParentWnd ||
		!pParentWnd->IsKindOf( RUNTIME_CLASS( CSplitterWnd ) ) )
	{
		//	View must always create its own scrollbars,
		//	if only it's not used within splitter
		cs.style |= ( WS_HSCROLL | WS_VSCROLL );
	}
	cs.lpszClass = AfxRegisterWndClass( CS_DBLCLKS );
	return CView::PreCreateWindow(cs);
}

void CSmartEditorView::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) 
{
	// TODO: Add your message handler code here and/or call default
	SCROLLINFO si;
	int page_lines, line_count, new_topline;
	
	CView::OnVScroll(nSBCode, nPos, pScrollBar);

	//	Note we cannot use nPos because of its 16-bit nature
	memset( &si, 0, sizeof( SCROLLINFO ) );

	si.cbSize = sizeof( SCROLLINFO );
	si.fMask = SIF_ALL;
	VERIFY( GetScrollInfo( SB_VERT, &si ) );

	page_lines = GetScreenLines();
	line_count = GetLineCount();

	switch( nSBCode )
	{
	case SB_TOP:
		new_topline = 0;
		break;
	case SB_BOTTOM:
		new_topline = line_count - page_lines + 1;
		break;
	case SB_LINEUP:
		new_topline = m_top_line - 1;
		break;
	case SB_LINEDOWN:
		new_topline = m_top_line + 1;
		break;
	case SB_PAGEUP:
		new_topline = m_top_line - si.nPage + 1;
		break;
	case SB_PAGEDOWN:
		new_topline = m_top_line + si.nPage - 1;
		break;
	case SB_THUMBPOSITION:
	case SB_THUMBTRACK:
		new_topline = si.nTrackPos;
		break;
	default:
		return;
	}

	if( new_topline < 0 )
	{
		new_topline = 0;
	}

	if( new_topline >= line_count )
	{
		new_topline = line_count - 1;
	}

	BOOL bUpdateSiblings = FALSE;
	if( m_top_line != new_topline )
	{
		int scroll_line_count = m_top_line - new_topline;
		m_top_line = new_topline;
		ScrollWindow( 0, scroll_line_count * GetLineHeight() );
		UpdateWindow();
	}

	RecalcVScrollBar( TRUE );
}

void
CSmartEditorView::RecalcVScrollBar( BOOL bPositionOnly )
{
	SCROLLINFO si;

	memset( &si, 0, sizeof( SCROLLINFO ) );
	si.cbSize = sizeof( SCROLLINFO );

	if( bPositionOnly )
	{
		//只更新区域，应该是用户纯滚动屏幕
		si.fMask = SIF_POS;
		si.nPos = m_top_line;
	}
	else
	{
		if( GetScreenLines() >= GetLineCount() && m_top_line > 0)
		{
			m_top_line = 0;
			Invalidate();
		}
		si.fMask = SIF_DISABLENOSCROLL | SIF_PAGE | SIF_POS | SIF_RANGE;
		si.nMin = 0;
		si.nMax = GetLineCount() - 1;
		si.nPage = GetScreenLines();
		si.nPos = m_top_line;
	}

	VERIFY( SetScrollInfo( SB_VERT, &si ) );
}

俺以前就在CView里面这么做的。

[Eleven]

你的View的基类用CScrollView不简单一些吗？

[fire2008hqy]

jennyvenus 大哥，create是要写歌重载的吗，VIEW类里面没有CREATE 只有OnCreate

[fire2008hqy]

[Quote=引用 2 楼 jennyvenus 的回复:]

C/C++ code
void CMyView::Create(CWnd *pParentWnd, const RECT &rect, UINT nID, DWORD dwStyle)
{
CView::Create(NULL, "", dwStyle, rect, pParentWnd, nID);

m_HScrollBar.Create( SBS_HORZ | S……
[/Quote]
jennyvenus 大哥，create是要写歌重载的吗，VIEW类里面没有CREATE 只有OnCreate，我MFC菜鸟，该咋办

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