ListCtrl Custom Draw

MFC_CUSTOM_DRAW_C++

#pragma once


// CCustomListBox

class CCustomListBox : public CListBox
{
	DECLARE_DYNAMIC(CCustomListBox)
	////////////////////////////////////////////自绘ListBox
	CArray<int> m_arySeparators;

	int         m_nHorizontalMargin;
	int         m_nBottomMargin;
	int         m_nSepWidth;
	int         m_nPenStyle;
	COLORREF    m_crColor;
	CBrush      m_brRedBrush;

public:
	CCustomListBox();
	virtual ~CCustomListBox();
	//////////////////////////////////////////////////////////////////////////ListItem显示
	virtual void PreSubclassWindow(void);
	virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
	virtual void MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct);
	//////////////////////////////////////////////////////////////////////////ListItem Separator
	void SetSeparator(int iSep);
	void AdjustItemHeight(int nInc=3);

	void SetSepLineStyle(int iSep) { m_nPenStyle = iSep; }
	void SetSepLineColor(COLORREF crColor) { m_crColor = crColor; }
	void SetSepLineWidth(int iWidth) { m_nSepWidth = iWidth; }
	void SetBottomMargin(int iMargin) { m_nBottomMargin = iMargin; }
	void SetHorizontalMargin(int iMargin) { m_nHorizontalMargin = iMargin; }
	HBRUSH OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor);

	void AddItemIcons(UINT nIDResBitmap);

protected:
	DECLARE_MESSAGE_MAP()

public:
	afx_msg void OnDestroy();

private:
	CImageList m_imgList;
};

//////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////

// CustomListBox.cpp : 实现文件
//

#include "stdafx.h"
#include "PackageTool.h"
#include "CustomListBox.h"
#include "PackageDefs.h"


// CCustomListBox

IMPLEMENT_DYNAMIC(CCustomListBox, CListBox)

CCustomListBox::CCustomListBox():
	m_nPenStyle(PS_DOT), 
	m_crColor(RGB(64,64,64)),
	m_nBottomMargin(1),
	m_nSepWidth(1),
	m_nHorizontalMargin(1)
{

}

CCustomListBox::~CCustomListBox()
{
}


BEGIN_MESSAGE_MAP(CCustomListBox, CListBox)
	ON_WM_DESTROY()
END_MESSAGE_MAP()



// CCustomListBox 消息处理程序

void CCustomListBox::PreSubclassWindow(void)
{
	CRect rect;
	GetClientRect(rect);
	this->SetItemHeight(-1,rect.Height()/10); 
	CListBox::PreSubclassWindow();
}

void CCustomListBox::DrawItem(LPDRAWITEMSTRUCT lpDIS)////////////////////////////自绘ListBox
{	
	CDC* pDC = CDC::FromHandle(lpDIS->hDC);
	COLORREF clrItemText;
	switch ( lpDIS->itemAction ) //lpDIS为一个LPMEASUREITEMSTRUCT（记录控件信息）判断listbox控件状态
	{ 
	case ODA_SELECT: 
	case ODA_DRAWENTIRE: 
	case ODA_FOCUS:
	
		// Is the item selected? 
		if ( lpDIS->itemState & ODS_SELECTED ) 
		{	 HBRUSH hbrush = CreateSolidBrush(RGB(0,190,255));//创建一个画刷
			clrItemText = GetSysColor(COLOR_WINDOWTEXT/*COLOR_HIGHLIGHTTEXT*/);
			// Clear the rectangle
			FillRect( lpDIS->hDC,&lpDIS->rcItem,hbrush);
			SetTextColor(lpDIS->hDC,clrItemText);
			DeleteObject(hbrush);
		} 
		else
		{ 
			clrItemText = GetSysColor( COLOR_WINDOWTEXT );
			// Clear the rectangle
			FillRect( lpDIS->hDC,&lpDIS->rcItem,(HBRUSH)(PACKAGETOOL_BK_COLOR) );
			SetTextColor(lpDIS->hDC,clrItemText);
		} 
	}		
	CRect rectFull = lpDIS->rcItem;
	CRect rect = rectFull;
	rect.left= rect.Width();
	CRect rect2 = rectFull;
	rect2.right = rect.left - 1;
	UINT nIndex = lpDIS->itemID;
	if (nIndex != (UINT) -1)
	{
		LOGFONT lf;
		pDC->GetCurrentFont()->GetLogFont(&lf);
		CFont font, *pOldFont;
		lf.lfCharSet=GB2312_CHARSET;
/*		lf.lfWeight=FW_BOLD;*/
		lf.lfHeight=12;
		lf.lfWidth=0;
		lstrcpy(lf.lfFaceName,_T("宋体"));
		font.CreateFontIndirect(&lf);
		pOldFont=pDC->SelectObject(&font);
		CString Text;
		GetText(nIndex,Text);
		pDC->SetBkMode(TRANSPARENT);
		pDC->DrawText(Text,CRect(rect2.left,rect2.top,rect2.right,rect2.bottom),DT_CENTER | DT_SINGLELINE|DT_VCENTER);
		pDC->SelectObject(pOldFont);
		m_imgList.Draw(pDC, lpDIS->itemID, CPoint(lpDIS->rcItem.left+2, lpDIS->rcItem.top + 7), ILD_TRANSPARENT);
	}
	OnCtlColor(pDC,this,CTLCOLOR_LISTBOX);

}

void CCustomListBox::MeasureItem(LPMEASUREITEMSTRUCT lpMeasureItemStruct) 
{
	// Changes the Width and the Height of item in the list box	
	lpMeasureItemStruct->itemHeight = 40;
	lpMeasureItemStruct->itemWidth = 100;
}

HBRUSH CCustomListBox::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor)
{
	if (nCtlColor == CTLCOLOR_LISTBOX)
	{
		if (this->GetSafeHwnd() ==NULL)
		{
			this->SubclassWindow(pWnd->GetSafeHwnd());
		}
		CRect r;
		int   nIndex, n = this->GetCount();

		CPen pen(m_nPenStyle, m_nSepWidth, m_crColor), *pOldPen;
		pOldPen = pDC->SelectObject(&pen);

		for (int i=0; i< m_arySeparators.GetSize(); i++)
		{
			nIndex = m_arySeparators[i];
			if (nIndex<0) nIndex += n-1;

			if (nIndex < n-1)
			{
				this->GetItemRect(nIndex,&r);
				pDC->MoveTo(r.left+m_nHorizontalMargin, r.bottom-m_nBottomMargin);
				pDC->LineTo(r.right-m_nHorizontalMargin, r.bottom-m_nBottomMargin);
			}
		}

		pDC->SelectObject(pOldPen);

	}
	return (HBRUSH)::GetStockObject(NULL_BRUSH);
}

void CCustomListBox::OnDestroy()
{
	if (this->GetSafeHwnd() !=NULL)
		this->UnsubclassWindow();

	CListBox::OnDestroy();
}

void CCustomListBox::SetSeparator(int iSep) 
{ 
	if (!m_arySeparators.GetSize())
		AdjustItemHeight();

	m_arySeparators.Add(iSep); 
}


void CCustomListBox::AdjustItemHeight(int nInc/*=3*/)
{
	SetItemHeight(0, nInc+ GetItemHeight(0));
}

void CCustomListBox::AddItemIcons(UINT nIDResBitmap)
{
	if (m_imgList.GetSafeHandle() != NULL)
		m_imgList.DeleteImageList();

	CBitmap bmpImage;
	VERIFY(bmpImage.LoadBitmap(nIDResBitmap));

	BITMAP bmpInfo;
	bmpImage.GetBitmap(&bmpInfo);
	m_imgList.Create(bmpInfo.bmWidth/10, bmpInfo.bmHeight, ILC_COLOR32 | ILC_MASK, 1, 1);
	m_imgList.Add(&bmpImage, RGB(255, 255, 255));
}