editgrid.cpp

VC数据库通用模块及典型系统开发配套代码,包含完整例子,各模块在开发数据库的时候可以直接用

// EditGrid.cpp : implementation file
//

#include "stdafx.h"
#include "EditGridDemo.h"
#include "EditGrid.h"

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

/////////////////////////////////////////////////////////////////////////////
// CEditGrid

IMPLEMENT_DYNCREATE(CEditGrid, CMDIChildWnd)

CEditGrid::CEditGrid()
{
}

CEditGrid::~CEditGrid()
{
}


BEGIN_MESSAGE_MAP(CEditGrid, CMSFlexGrid)
	//{{AFX_MSG_MAP(CEditGrid)
	ON_WM_KEYDOWN()
	ON_WM_CHAR()
	ON_WM_LBUTTONDBLCLK()
	ON_WM_CREATE()
	ON_WM_SETFOCUS()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()

BEGIN_EVENTSINK_MAP(CEditGrid, CMSFlexGrid)
    //{{AFX_EVENTSINK_MAP(CEditGrid)
	//}}AFX_EVENTSINK_MAP
	ON_EVENT_REFLECT(CEditGrid, 72 /* LeaveCell */, OnLeaveCell, VTS_NONE)
END_EVENTSINK_MAP()


/////////////////////////////////////////////////////////////////////////////
// CEditGrid message handlers

void CEditGrid::PreSubclassWindow()
{
	//创建并初始化编辑框m_Edit
	m_Edit.Create(WS_CHILD|ES_MULTILINE|ES_WANTRETURN, 
		CRect(0,0,0,0), this, GetDlgCtrlID());
	//计算边框的宽度
	SetRow(0);
	SetCol(0);
	m_lBorderWidth = GetCellLeft();
	m_lBorderHeight = GetCellTop();

	//初始化m_nLogX和m_nLogY
	CDC* pDC = GetDC();
	m_nLogX = pDC->GetDeviceCaps(LOGPIXELSX);
	m_nLogY = pDC->GetDeviceCaps(LOGPIXELSY);
	ReleaseDC(pDC);
	
	//设置格子的初始位置
	SetRow(1);
	SetCol(1);
}

void CEditGrid::OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	//当用户按下的是回车键时，
	//格子中的文本写到m_Edit中并变成选中状态。
	if (nChar == 13)
	{
		m_Edit.SetWindowText(GetText());
		m_Edit.SetSel(0, -1);
	}
	//当用户按下的是其他键时，
	//按下的键写到m_Edit中。
	else
	{
		char buf[] = " ";
		buf[0] = (char)nChar;
		m_Edit.SetSel(0,-1);
		m_Edit.ReplaceSel(buf);
	}
	//显示m_Edit
	ShowEdit();
	CMSFlexGrid::OnChar(nChar, nRepCnt, nFlags);
}

void CEditGrid::ShowEdit()
{
	//设置m_Edit的位置
	m_Edit.MoveWindow(((GetCellLeft() - m_lBorderWidth) * m_nLogX)/1440, 
		((GetCellTop() - m_lBorderHeight) * m_nLogY)/1440,
		(GetCellWidth()* m_nLogX)/1440, 
		(GetCellHeight()* m_nLogY)/1440, FALSE);

	//显示m_Edit并设置焦点
	m_Edit.ShowWindow(SW_SHOW);
	m_Edit.SetFocus();	
}

void CEditGrid::OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) 
{
	// TODO: Add your message handler code here and/or call default
	
	CMSFlexGrid::OnKeyDown(nChar, nRepCnt, nFlags);
}

void CEditGrid::OnEnterKey()
{
	OnChar(13, 0, 0);
}

void CEditGrid::OnLButtonDblClk(UINT nFlags, CPoint point) 
{
	OnChar(13, 0, 0);
	CMSFlexGrid::OnLButtonDblClk(nFlags, point);
}


void CEditGrid::OnLeaveCell()
{
	BOOL bVisible = ::GetWindowLong(m_Edit.GetSafeHwnd(), GWL_STYLE) & WS_VISIBLE;

	if (bVisible)
	{
		CString cStr;
		m_Edit.GetWindowText(cStr);
		SetText(cStr);
		m_Edit.SetWindowText("");
		m_Edit.ShowWindow(SW_HIDE);
	}	
}