www.pudn.com > rsdagl.rar > MyTreeCtrl.cpp

// MyTreeCtrl.cpp : implementation file 
// 
 
#include "StdAfx.h" 
#include "MyTreeCtrl.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CMyTreeCtrl 
 
CMyTreeCtrl::CMyTreeCtrl() 
{ 
} 
 
CMyTreeCtrl::~CMyTreeCtrl() 
{ 
} 
 
 
BEGIN_MESSAGE_MAP(CMyTreeCtrl, CTreeCtrl) 
	//{{AFX_MSG_MAP(CMyTreeCtrl) 
	ON_WM_PAINT() 
	ON_WM_ERASEBKGND() 
	ON_NOTIFY_REFLECT(TVN_ITEMEXPANDED, OnItemexpanded) 
	ON_NOTIFY_REFLECT(TVN_ITEMEXPANDING, OnItemexpanding) 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CMyTreeCtrl message handlers 
BOOL CMyTreeCtrl::SetBKImage(LPCTSTR LpszResource) 
{ 
 
	// if this is not the first call then delete gdi objects 
	if( m_bitmap.m_hObject != NULL ) 
		m_bitmap.DeleteObject(); 
	 
	HBITMAP hbmp = (HBITMAP)::LoadImage(AfxGetInstanceHandle(),  
			LpszResource, IMAGE_BITMAP, 0, 0, LR_CREATEDIBSECTION|LR_LOADFROMFILE); 
 
	if( hbmp == NULL )  
		return FALSE; 
 
	m_bitmap.Attach( hbmp ); 
	 
	return TRUE; 
} 
 
LRESULT CMyTreeCtrl::WindowProc(UINT message, WPARAM wParam, LPARAM lParam)  
{ 
	// TODO: Add your specialized code here and/or call the base class 
	 
	return CTreeCtrl::WindowProc(message, wParam, lParam); 
} 
 
void CMyTreeCtrl::OnPaint()  
{ 
	CPaintDC dc(this); // device context for painting 
	 
	CRect rcclient; 
	GetClientRect(&rcclient); 
 
	// create a compatible memory dc  
	CDC memdc; 
	memdc.CreateCompatibleDC(&dc);	 
	CBitmap bitmap; 
	bitmap.CreateCompatibleBitmap(&dc, rcclient.Width(), rcclient.Height()); 
	memdc.SelectObject( &bitmap ); 
 
	CWnd::DefWindowProc(WM_PAINT, (WPARAM)memdc.m_hDC , 0); 
 
	CDC maskdc; 
	maskdc.CreateCompatibleDC(&dc); 
	CBitmap maskbitmap; 
	maskbitmap.CreateBitmap(rcclient.Width(), rcclient.Height(), 1, 1, NULL); 
	maskdc.SelectObject( &maskbitmap ); 
	maskdc.BitBlt( 0, 0, rcclient.Width(), rcclient.Height(), &memdc,  
		rcclient.left, rcclient.top, SRCCOPY); 
 
	CBrush brush; 
	brush.CreatePatternBrush(&m_bitmap); 
	dc.FillRect(rcclient, &brush);	 
	 
	memdc.SetBkColor(RGB(0,0,0));           
	memdc.SetTextColor(RGB(255,255,255));   
	memdc.BitBlt(rcclient.left, rcclient.top, rcclient.Width(), rcclient.Height(), &maskdc, rcclient.left, rcclient.top, SRCAND);	 
 
	dc.SetBkColor(RGB(255,255,255)); 
	dc.SetTextColor(RGB(0,0,0)); 
	dc.BitBlt(rcclient.left, rcclient.top, rcclient.Width(), rcclient.Height(), &maskdc, rcclient.left, rcclient.top, SRCAND); 
	 
	dc.BitBlt(rcclient.left, rcclient.top, rcclient.Width(), rcclient.Height(), &memdc,  
					rcclient.left, rcclient.top,SRCPAINT); 
	brush.DeleteObject(); 
} 
 
 
BOOL CMyTreeCtrl::OnEraseBkgnd(CDC* pDC)  
{ 
	// TODO: Add your message handler code here and/or call default 
	return TRUE; 
} 
 
void CMyTreeCtrl::OnItemexpanded(NMHDR* pNMHDR, LRESULT* pResult)  
{ 
	NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)pNMHDR; 
	// TODO: Add your control notification handler code here 
	Invalidate(); 
	SetRedraw(TRUE); 
	*pResult = 0; 
} 
 
void CMyTreeCtrl::OnItemexpanding(NMHDR* pNMHDR, LRESULT* pResult)  
{ 
	NM_TREEVIEW* pNMTreeView = (NM_TREEVIEW*)pNMHDR; 
	// TODO: Add your control notification handler code here 
	SetRedraw(FALSE); 
	*pResult = 0; 
}