www.pudn.com > UsefulListView.zip > GFXLISTTIP.CPP

// GfxListTip.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "CGfxListView.h" 
 
#include "GfxListTip.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
#define GFXLISTTIP_CLASSNAME _T("ZGfxListTip") 
 
///////////////////////////////////////////////////////////////////////////// 
// CGfxListTip 
 
CGfxListTip::CGfxListTip() 
{ 
	WNDCLASS wndcls; 
	HINSTANCE hInst = AfxGetInstanceHandle(); 
	if(!(::GetClassInfo(hInst, GFXLISTTIP_CLASSNAME, &wndcls))) 
	{ 
		wndcls.style = CS_SAVEBITS ; 
		wndcls.lpfnWndProc = ::DefWindowProc; 
		wndcls.cbClsExtra = wndcls.cbWndExtra = 0; 
		wndcls.hInstance = hInst; 
		wndcls.hIcon = NULL; 
		wndcls.hCursor = LoadCursor(hInst, IDC_ARROW); 
		wndcls.hbrBackground = (HBRUSH)(COLOR_INFOBK + 1);  
		wndcls.lpszMenuName = NULL; 
		wndcls.lpszClassName = GFXLISTTIP_CLASSNAME; 
		if (!AfxRegisterClass(&wndcls)) AfxThrowResourceException(); 
	} 
} 
 
CGfxListTip::~CGfxListTip() 
{ 
} 
 
 
BEGIN_MESSAGE_MAP(CGfxListTip, CWnd) 
	//{{AFX_MSG_MAP(CGfxListTip) 
	ON_WM_MOUSEMOVE() 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
 
///////////////////////////////////////////////////////////////////////////// 
// CGfxListTip message handlers 
 
BOOL CGfxListTip::PreTranslateMessage(MSG* pMsg)  
{ 
	CWnd *pWnd; 
	int hittest; 
	switch(pMsg->message) 
	{ 
	case WM_LBUTTONDOWN: 
	case WM_RBUTTONDOWN: 
	case WM_MBUTTONDOWN: 
		POINTS pts = MAKEPOINTS(pMsg->lParam); 
		POINT  point; 
		point.x = pts.x; 
		point.y = pts.y; 
		ClientToScreen(&point); 
		pWnd = WindowFromPoint(point); 
		if( pWnd == this ) pWnd = m_pParentWnd; 
 
		hittest = (int)pWnd->SendMessage(WM_NCHITTEST, 0,MAKELONG(point.x,point.y)); 
		if (hittest == HTCLIENT)  
		{ 
			pWnd->ScreenToClient(&point); 
			pMsg->lParam = MAKELONG(point.x,point.y); 
		}  
		else  
		{ 
			switch (pMsg->message)  
			{ 
			case WM_LBUTTONDOWN:  
				pMsg->message = WM_NCLBUTTONDOWN; 
				break; 
			case WM_RBUTTONDOWN:  
				pMsg->message = WM_NCRBUTTONDOWN; 
				break; 
			case WM_MBUTTONDOWN:  
				pMsg->message = WM_NCMBUTTONDOWN; 
				break; 
			} 
			pMsg->wParam = hittest; 
			pMsg->lParam = MAKELONG(point.x,point.y); 
		} 
		ReleaseCapture(); 
		ShowWindow(SW_HIDE); 
		pWnd->PostMessage(pMsg->message,pMsg->wParam,pMsg->lParam); 
		return TRUE;		 
	case WM_KEYDOWN: 
	case WM_SYSKEYDOWN: 
		ReleaseCapture(); 
		ShowWindow(SW_HIDE); 
		m_pParentWnd->PostMessage(pMsg->message, pMsg->wParam, pMsg->lParam); 
		return TRUE; 
	} 
 
	if (GetFocus() == NULL) 
	{ 
		ReleaseCapture(); 
		ShowWindow(SW_HIDE); 
		return TRUE; 
	} 
 
	return CWnd::PreTranslateMessage(pMsg); 
} 
 
BOOL CGfxListTip::Create(CWnd * pParentWnd) 
{ 
	ASSERT_VALID(pParentWnd); 
	DWORD dwStyle = WS_BORDER | WS_POPUP;  
	DWORD dwExStyle = WS_EX_TOOLWINDOW | WS_EX_TOPMOST; 
	m_pParentWnd = pParentWnd; 
	return CreateEx(dwExStyle, GFXLISTTIP_CLASSNAME, NULL, dwStyle, 0, 0, 0, 0, NULL, NULL, NULL); 
} 
 
 
void CGfxListTip::Show(CRect rectTitle, LPCTSTR lpszTitleText, int xoffset) 
{ 
	if (!::IsWindow( m_hWnd )) return; 
	if (rectTitle.IsRectEmpty()) return; 
 
	ASSERT(!rectTitle.IsRectEmpty()); 
 
	if (lpszTitleText == NULL || *lpszTitleText == 0) return; 
	if (IsWindowVisible()) return; 
	if (GetFocus() == NULL) return; 
	m_rectTitle.top = -1; 
	m_rectTitle.left = -xoffset-1; 
	m_rectTitle.right = rectTitle.Width()-xoffset; 
	m_rectTitle.bottom = rectTitle.Height()+1; 
	m_pParentWnd->ClientToScreen( rectTitle ); 
	CClientDC dc(this); 
	CString strTitle(lpszTitleText); 
	CFont *pFont = m_pParentWnd->GetFont(); 	// use same font as ctrl 
	CFont *pFontDC = dc.SelectObject( pFont ); 
	CRect rectDisplay = rectTitle; 
	CSize size = dc.GetTextExtent( strTitle ); 
	rectDisplay.left += xoffset; 
	rectDisplay.right = rectDisplay.left + size.cx + 3; 
	if (rectDisplay.right <= rectTitle.right-xoffset) return; 
	SetWindowPos(&wndTop, rectDisplay.left, rectDisplay.top, rectDisplay.Width(), rectDisplay.Height(), SWP_SHOWWINDOW|SWP_NOACTIVATE); 
	dc.SetBkMode(TRANSPARENT); 
	dc.TextOut(0, 0, strTitle); 
	dc.SelectObject(pFontDC); 
	SetCapture(); 
} 
 
void CGfxListTip::OnMouseMove(UINT nFlags, CPoint point)  
{ 
	 if (!m_rectTitle.PtInRect(point))  
	 { 
		  ReleaseCapture(); 
		  ShowWindow( SW_HIDE ); 
		  ClientToScreen(&point); 
		  CWnd *pWnd = WindowFromPoint(point); 
		  if (pWnd == this) pWnd = m_pParentWnd; 
		  int hittest = (int)pWnd->SendMessage(WM_NCHITTEST, 0,MAKELONG(point.x,point.y)); 
		  if (hittest == HTCLIENT)  
		  { 
			   pWnd->ScreenToClient( &point ); 
			   pWnd->PostMessage(WM_MOUSEMOVE, nFlags, MAKELONG(point.x,point.y)); 
		  }  
		  else pWnd->PostMessage(WM_NCMOUSEMOVE, hittest, MAKELONG(point.x,point.y)); 
	 } 
}