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DataGridEx.cpp
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DataGridEx.cpp
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// DataGridEx.cpp: implementation of the CDataGridEx class.
//
//////////////////////////////////////////////////////////////////////
#include "stdafx.h"
#include "autophs.h"
#include "DataGridEx.h"
#include "Column.h"
#include "Columns.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/////////////////////////////////////////////////////////////////////////////
// CDataGridEx
CDataGridEx::CDataGridEx()
{
m_RecordCount=-1;
m_PreVScrollPos=0;
m_PreVScrollFlag=FALSE;
}
CDataGridEx::~CDataGridEx()
{
}
CMap<DWORD,DWORD,CDataGridEx::tagHookCountInfo*,CDataGridEx::tagHookCountInfo*> CDataGridEx::m_MouseThreadHookMap;
BEGIN_MESSAGE_MAP(CDataGridEx, CDataGrid)
//{{AFX_MSG_MAP(CDataGridEx)
ON_WM_HSCROLL()
ON_WM_VSCROLL()
ON_WM_RBUTTONDOWN()
//}}AFX_MSG_MAP
ON_MESSAGE(WM_MOUSEWHEEL2,OnMouseWheel2)
ON_COMMAND(IDC_GRID_ASC,OnSortAsc)
ON_COMMAND(IDC_GRID_DESC,OnSortDesc)
END_MESSAGE_MAP()
////////////////////////////////////////////////
//
// 初始化TOOLTIP控件
//
void CDataGridEx::InitToolTipControl()
{
if(m_RecordCount<0)
{
LPUNKNOWN pUnknown;
HRESULT hr;
_RecordsetPtr IRecordset;
pUnknown=GetDataSource();
if(pUnknown==NULL)
return;
try
{
hr=pUnknown->QueryInterface(__uuidof(Recordset),(void**)&IRecordset);
pUnknown->Release();
if(FAILED(hr))
{
throw _com_error(hr);
}
m_RecordCount=IRecordset->GetRecordCount();
}
catch(_com_error &e)
{
AfxMessageBox(e.ErrorMessage());
}
}
if(IsWindow(m_ToolTip.GetSafeHwnd()))
return;
m_ToolTip.Create(this);
TOOLINFO ToolInfo;
memset(&ToolInfo,0,sizeof(TOOLINFO));
ToolInfo.cbSize=sizeof(TOOLINFO);
ToolInfo.uFlags=TTF_TRACK|TTF_IDISHWND| TTF_ABSOLUTE;
ToolInfo.hwnd=this->m_hWnd;
ToolInfo.uId=(UINT)this->m_hWnd;
ToolInfo.lpszText=LPSTR_TEXTCALLBACK;
m_ToolTip.SendMessage(TTM_ADDTOOL,0,(LPARAM)&ToolInfo);
}
/////////////////////////////////////////////////////////////////////////////
// CDataGridEx message handlers
/////////////////////////////////////////////////////////////////////////////
//
// 响应横向滚动
//
void CDataGridEx::OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
if(nSBCode==SB_THUMBTRACK)
{
short Col;
Col=this->GetLeftCol();
this->Scroll(nPos-Col,0);
}
CDataGrid::OnHScroll(nSBCode, nPos, pScrollBar);
}
///////////////////////////////////////////////////////////////////////////////
//
// 响应垂直滚动
//
void CDataGridEx::OnVScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar)
{
if(nSBCode==SB_THUMBTRACK || nSBCode==SB_THUMBPOSITION)
{
TOOLINFO ToolInfo;
_variant_t varTemp;
POINT pt;
InitToolTipControl();
memset(&ToolInfo,0,sizeof(TOOLINFO));
ToolInfo.cbSize=sizeof(TOOLINFO);
ToolInfo.uFlags=TTF_TRACK|TTF_IDISHWND| TTF_ABSOLUTE;
ToolInfo.hwnd=this->m_hWnd;
ToolInfo.uId=(UINT)this->m_hWnd;
ToolInfo.lpszText=LPSTR_TEXTCALLBACK;
if(nSBCode==SB_THUMBTRACK)
{
// varTemp=GetFirstRow();
// Scroll(0,nPos-(long)varTemp+1);
if(m_PreVScrollFlag==FALSE)
{
m_PreVScrollPos=nPos;
m_PreVScrollFlag=TRUE;
}
else
{
Scroll(0,nPos-m_PreVScrollPos);
m_PreVScrollPos=nPos;
}
::_stprintf(m_ToolTipInfo,_T("记录:%d共有记录数%d"),nPos+1,m_RecordCount);
::GetCursorPos(&pt);
m_ToolTip.SendMessage(TTM_TRACKPOSITION,0,MAKEWPARAM(pt.x+15,pt.y));
m_ToolTip.SendMessage(TTM_TRACKACTIVATE,TRUE,(LPARAM)&ToolInfo);
//放置ToolTip控件在合适显示的位置
PlaceToolTipWndToRightPosition();
}
else
{
m_ToolTip.SendMessage(TTM_TRACKACTIVATE,FALSE,(LPARAM)&ToolInfo);
}
if(nSBCode==SB_THUMBPOSITION)
{
m_PreVScrollFlag=FALSE;
}
}
CDataGrid::OnVScroll(nSBCode, nPos, pScrollBar);
}
BOOL CDataGridEx::OnNotify(WPARAM wParam, LPARAM lParam, LRESULT *pResult)
{
LPNMTTDISPINFO lpnmtdi=(LPNMTTDISPINFO)lParam;
if(lpnmtdi->hdr.code==TTN_NEEDTEXT)
{
lpnmtdi->lpszText=m_ToolTipInfo;
}
return CDataGrid::OnNotify(wParam,lParam,pResult);
}
///////////////////////////////////////////////////////
//
// 放置ToolTip控件在合适显示的位置
//
void CDataGridEx::PlaceToolTipWndToRightPosition()
{
CRect ToolTipRect,ScreenRect;
if(!::IsWindow(this->m_ToolTip.GetSafeHwnd()))
return;
m_ToolTip.GetWindowRect(&ToolTipRect);
if(ToolTipRect.IsRectEmpty())
return;
::GetWindowRect(::GetDesktopWindow(),&ScreenRect);
if(ToolTipRect.right>ScreenRect.right)
{
ToolTipRect.OffsetRect(ScreenRect.right-ToolTipRect.right,0);
m_ToolTip.SendMessage(TTM_TRACKPOSITION,0,MAKEWPARAM(ToolTipRect.left,ToolTipRect.top));
}
}
//////////////////////////////////////////////
//
// 初始化中间滚动球的滚动响应
//
// 应该在窗口创建已后才调用
//
void CDataGridEx::InitMouseWheel()
{
HANDLE Handle;
tagHookCountInfo* pHookCountInfo;
if(!IsWindow(GetSafeHwnd()))
return;
Handle=::GetProp(GetSafeHwnd(),_T("MouseWheel"));
if(Handle!=NULL)
return;
::SetProp(GetSafeHwnd(),_T("MouseWheel"),(HANDLE)this);
if(!m_MouseThreadHookMap.Lookup(::GetCurrentThreadId(),pHookCountInfo))
{
pHookCountInfo=new tagHookCountInfo;
pHookCountInfo->hHook=::SetWindowsHookEx(WH_GETMESSAGE,CDataGridEx::GetMsgProc,
NULL,GetCurrentThreadId());
pHookCountInfo->Count=1;
m_MouseThreadHookMap.SetAt(GetCurrentThreadId(),pHookCountInfo);
}
else
{
pHookCountInfo->Count++;
}
}
/////////////////////////////////////////////////////
//
// 钩子的会调函数
//
LRESULT CALLBACK CDataGridEx::GetMsgProc(int code, WPARAM wParam, LPARAM lParam)
{
HANDLE Handle;
tagHookCountInfo* pHookCountInfo;
HWND hWnd;
MSG *pMsg;
pMsg=(MSG*)lParam;
m_MouseThreadHookMap.Lookup(::GetCurrentThreadId(),pHookCountInfo);
if(code<0 || pMsg->message!=WM_MOUSEWHEEL)
return CallNextHookEx(pHookCountInfo->hHook,code,wParam,lParam);
hWnd=pMsg->hwnd;
while(TRUE)
{
if(!IsWindow(hWnd))
break;
Handle=::GetProp(hWnd,_T("MouseWheel"));
if(Handle==NULL)
hWnd=::GetParent(hWnd);
else
{
::PostMessage(hWnd,WM_MOUSEWHEEL2,pMsg->wParam,pMsg->lParam);
break;
}
}
return CallNextHookEx(pHookCountInfo->hHook,code,wParam,lParam);
}
LRESULT CDataGridEx::OnMouseWheel2(WPARAM wParam, LPARAM lParam)
{
int Ro;
Ro=int(wParam);
if(Ro>=0)
{
this->Scroll(0,-2);
}
else
{
this->Scroll(0,2);
}
return 0;
}
void CDataGridEx::OnRButtonDown(UINT nFlags, CPoint point)
{
POINT ScreenPt;
CMenu menu;
try
{
// m_SelectCol=ColContaining(static_cast<float>(point.x));
m_SelectCol=this->GetSelStartCol();
if(m_SelectCol<0)
return;
}
catch(COleDispatchException *e)
{
char cStr[255];
e->GetErrorMessage(cStr,255);
AfxMessageBox(cStr);
return;
}
ScreenPt.x=point.x;
ScreenPt.y=point.y;
ClientToScreen(&ScreenPt);
//LFX 2005.3.6注释掉,暂时不实现此功能
//menu.CreatePopupMenu();
//menu.AppendMenu(MF_STRING,IDC_GRID_ASC,"升序(&A)");
//menu.AppendMenu(MF_STRING,IDC_GRID_DESC,"降序(&C)");
//menu.TrackPopupMenu(TPM_LEFTALIGN,ScreenPt.x,ScreenPt.y,this);
CDataGrid::OnRButtonDown(nFlags, point);
}
void CDataGridEx::OnSortAsc()
{
CString strTemp;
_RecordsetPtr IRecordset;
LPUNKNOWN pUnknown;
HRESULT hr;
try
{
pUnknown=this->GetDataSource();
hr=pUnknown->QueryInterface(__uuidof(_RecordsetPtr),(void**)&IRecordset);
if(FAILED(hr))
{
pUnknown->Release();
AfxMessageBox(_com_error(hr).ErrorMessage());
return;
}
pUnknown->Release();
strTemp=GetColumns().GetItem(_variant_t(m_SelectCol)).GetCaption();
strTemp+=_T(" ASC");
IRecordset->Sort=_bstr_t(strTemp);
}
catch (_com_error &e)
{
CString strMsg;
strMsg.Format("%s:%d %s", __FILE__, __LINE__, (LPSTR)e.Description());
AfxMessageBox(strMsg);
}
return;
}
void CDataGridEx::OnSortDesc()
{
CString strTemp;
_RecordsetPtr IRecordset;
LPUNKNOWN pUnknown;
HRESULT hr;
try
{
pUnknown=this->GetDataSource();
hr=pUnknown->QueryInterface(__uuidof(_RecordsetPtr),(void**)&IRecordset);
if(FAILED(hr))
{
pUnknown->Release();
AfxMessageBox(_com_error(hr).ErrorMessage());
return;
}
pUnknown->Release();
strTemp=GetColumns().GetItem(_variant_t(m_SelectCol)).GetCaption();
strTemp+=_T(" DESC");
IRecordset->Sort=_bstr_t(strTemp);
}
catch (_com_error &e)
{
CString strMsg;
strMsg.Format("%s:%d %s", __FILE__, __LINE__, (LPSTR)e.Description());
AfxMessageBox(strMsg);
}
return;
}
////////////////////////////////////////////
//
// 释放钩子资源,应在窗口销毁前调用
//
void CDataGridEx::UnInitMouseWheel()
{
tagHookCountInfo* pHookCountInfo;
HANDLE Handle;
if(!IsWindow(GetSafeHwnd()))
{
return;
}
Handle=::GetProp(GetSafeHwnd(),_T("MouseWheel"));
if(Handle!=NULL)
{
RemoveProp(GetSafeHwnd(),_T("MouseWheel"));
}
else
{
return;
}
//
// 减少使用此线程钩子的计数,当计数为0时
// 销毁这个线程的钩子,并从map中移除
//
if(m_MouseThreadHookMap.Lookup(::GetCurrentThreadId(),pHookCountInfo))
{
pHookCountInfo->Count--;
if(pHookCountInfo->Count==0)
{
::UnhookWindowsHookEx(pHookCountInfo->hHook);
m_MouseThreadHookMap.RemoveKey(::GetCurrentThreadId());
delete pHookCountInfo;
}
}
}