VC 分割窗口效果

VC 分割窗口效果

(2009-05-04 23:38:19)

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标签： 杂谈

分类： vC++

大家都知道可以在一个CFrameWnd上面使用CSplitterWnd以做出分割窗口的效果(呵呵,顺便,分割窗口可是MFC程序的一大特色.原来(Delphi没有加上这个的支持之前),你只要看到了分割窗口,几乎可以肯定是MFC的.(哈哈,当然,也有人用SDK做一个出来,有这种闲的家伙么?呵呵,好象废话太多了点).

可是现实中的情况是,有的时候我们要在一个一般的CWnd上面做一个SplitterWnd的效果.怎么办呢?MS的SplitterWnd只可以用于CFrameWnd(好像也可以用于CView类,MS的文档里说的).之所以有这个限制是因为TMD狗屎MS在SplitterWnd里面把所有要取Parent窗口的地方都设为CFrameWnd了.但实际上,它又没有用到CFrameWnd的任何特性.所以我们应该怎么做,好像是很明显的了.就是去翻MS的SplitterWnd的源码,把所有的用到了Parent的地方都改掉.啊!!!不是的,这还叫狗屁OOP?应该是重载一个我们自己的.

头文件:

// SplitWnd.h : implementation file
//
class CxSplitterWnd : public CSplitterWnd
{
// Construction
public:
CxSplitterWnd() {};
virtual ~CxSplitterWnd() {};

// Operations
public:
// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CxSplitterWnd)
//}}AFX_VIRTUAL

// Implementation
public:
// These are the methods to be overridden
virtual void StartTracking(int ht);
virtual CWnd* GetActivePane(int* pRow = NULL, int* pCol = NULL);
virtual void SetActivePane( int row, int col, CWnd* pWnd = NULL );
virtual BOOL OnCommand(WPARAM wParam, LPARAM lParam);
virtual BOOL OnNotify( WPARAM wParam, LPARAM lParam, LRESULT* pResult );
virtual BOOL OnWndMsg( UINT message, WPARAM wParam, LPARAM lParam, LRESULT* pResult );

// Generated message map functions
protected:
//}}AFX_MSG(CxSplitterWnd)
// NOTE - the ClassWizard will add and remove member functions here.
//}}AFX_MSG
DECLARE_MESSAGE_MAP()
};

还有实现文件:


// SplitWnd.cpp : implementation file
//
#include "stdafx.h"
#include "SplitWnd.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

// HitTest return values (values and spacing between values is important)
// Had to adopt this because it has module scope
enum HitTestValue
{
noHit = 0,
vSplitterBox = 1,
hSplitterBox = 2,
bothSplitterBox = 3, // just for keyboard
vSplitterBar1 = 101,
vSplitterBar15 = 115,
hSplitterBar1 = 201,
hSplitterBar15 = 215,
splitterIntersection1 = 301,
splitterIntersection225 = 525
};

/////////////////////////////////////////////////////////////////////////////
// CxSplitterWnd

BEGIN_MESSAGE_MAP(CxSplitterWnd, CSplitterWnd)
//{{AFX_MSG_MAP(CxSplitterWnd)
// NOTE - the ClassWizard will add and remove mapping macros here.
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

CWnd* CxSplitterWnd::GetActivePane(int* pRow, int* pCol)
{
ASSERT_VALID(this);
CWnd* pView = GetFocus();
// make sure the pane is a child pane of the splitter
if (pView != NULL && !IsChildPane(pView, pRow, pCol))
pView = NULL;
return pView;
}

void CxSplitterWnd::SetActivePane( int row, int col, CWnd* pWnd)
{
// set the focus to the pane
CWnd* pPane = pWnd == NULL ? GetPane(row, col) : pWnd;
pPane->SetFocus();
}

void CxSplitterWnd::StartTracking(int ht)
{
ASSERT_VALID(this);
if (ht == noHit)
return;
// GetHitRect will restrict 'm_rectLimit' as appropriate
GetInsideRect(m_rectLimit);
if (ht >= splitterIntersection1 && ht <= splitterIntersection225)
{
// split two directions (two tracking rectangles)
int row = (ht - splitterIntersection1) / 15;
int col = (ht - splitterIntersection1) % 15;
GetHitRect(row + vSplitterBar1, m_rectTracker);
int yTrackOffset = m_ptTrackOffset.y;
m_bTracking2 = TRUE;
GetHitRect(col + hSplitterBar1, m_rectTracker2);
m_ptTrackOffset.y = yTrackOffset;
}
else if (ht == bothSplitterBox)
{
// hit on splitter boxes (for keyboard)
GetHitRect(vSplitterBox, m_rectTracker);
int yTrackOffset = m_ptTrackOffset.y;
m_bTracking2 = TRUE;
GetHitRect(hSplitterBox, m_rectTracker2);
m_ptTrackOffset.y = yTrackOffset;
// center it
m_rectTracker.OffsetRect(0, m_rectLimit.Height()/2);
m_rectTracker2.OffsetRect(m_rectLimit.Width()/2, 0);
}
else
{
// only hit one bar
GetHitRect(ht, m_rectTracker);
}

// steal focus and capture
SetCapture();
SetFocus();
// make sure no updates are pending
RedrawWindow(NULL, NULL, RDW_ALLCHILDREN | RDW_UPDATENOW);
// set tracking state and appropriate cursor
m_bTracking = TRUE;
OnInvertTracker(m_rectTracker);
if (m_bTracking2)
OnInvertTracker(m_rectTracker2);
m_htTrack = ht;
SetSplitCursor(ht);
}

/////////////////////////////////////////////////////////////////////////////
// CSplitterWnd command routing
BOOL CxSplitterWnd::OnCommand(WPARAM wParam, LPARAM lParam)
{
if (CWnd::OnCommand(wParam, lParam))
return TRUE;
// route commands to the splitter to the parent frame window
return GetParent()->SendMessage(WM_COMMAND, wParam, lParam);
}

BOOL CxSplitterWnd::OnNotify( WPARAM wParam, LPARAM lParam, LRESULT* pResult )
{
if (CWnd::OnNotify(wParam, lParam, pResult))
return TRUE;
// route commands to the splitter to the parent frame window
*pResult = GetParent()->SendMessage(WM_NOTIFY, wParam, lParam);
return TRUE;
}

BOOL CxSplitterWnd::OnWndMsg(UINT message, WPARAM wParam, LPARAM lParam, LRESULT* pResult)
{
// The code line below is necessary if using CxSplitterWnd in a regular dll
// AFX_MANAGE_STATE(AfxGetStaticModuleState());
return CWnd::OnWndMsg(message, wParam, lParam, pResult);
}

把这个文件给包含进你的工程,就可以用CxSplitterWnd了.