listhearderctrl.cpp

evc listcontrol控件自绘,实现report风格的标题自绘,以及滚动条的自绘

#include "StdAfx.h"
#include "ListCtrl.h"
#include "ListHeaderCtrl.h"
#include "memdc.h"

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



CListHeaderCtrl::CListHeaderCtrl()
{
}

CListHeaderCtrl::~CListHeaderCtrl()
{
}

BEGIN_MESSAGE_MAP(CListHeaderCtrl, CHeaderCtrl)
	//{{AFX_MSG_MAP(CListHeaderCtrl)
	ON_WM_PAINT()
	ON_WM_ERASEBKGND()
	//}}AFX_MSG_MAG
END_MESSAGE_MAP()



void CListHeaderCtrl::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{

}

void CListHeaderCtrl::OnPaint()
{
	CPaintDC dc(this);

	CRect rect, rectItem, clientRect;
	GetClientRect(&rect);
	GetClientRect(&clientRect);
	CMemDC memDC(&dc, rect);
	CDC bitmapDC;
	bitmapDC.CreateCompatibleDC(&dc);

	memDC.FillSolidRect(&rect, RGB(76,85,118));

	CBitmap bitmapSpan;
	bitmapSpan.LoadBitmap(IDB_MYCOLUMN);
	CBitmap* pOldBitmapSpan = bitmapDC.SelectObject(&bitmapSpan);
	memDC.StretchBlt(rect.left + 2, 0, rect.Width(), 20, &bitmapDC, 0, 0, 1, 20, SRCCOPY);
	bitmapDC.SelectObject(pOldBitmapSpan);
	bitmapSpan.DeleteObject();

	int nItems = GetItemCount();

	CBitmap bitmap;
	CBitmap bitmap2;
	CBitmap bitmap3;
	bitmap.LoadBitmap(IDB_COLUMNHEADER_START);
	bitmap2.LoadBitmap(IDB_MYCOLUMN);
	bitmap3.LoadBitmap(IDB_COLUMNHEADER_END);

	for(int i = 0; i < nItems; i++)
	{
		TCHAR buf1[256];
		HD_ITEM hditem1;

		hditem1.mask = HDI_TEXT | HDI_FORMAT | HDI_ORDER;
		hditem1.pszText = buf1;
		hditem1.cchTextMax = 255;
		GetItem(i, &hditem1);
		GetItemRect(i, &rect);
		
		CBitmap* pOldbitmap = NULL;
		
	//	if(hditem1.iOrder == 0)
	//	{
	//		pOldbitmap = bitmapDC.SelectObject(&bitmap);
	//		memDC.BitBlt(rect.left, rect.top, 2, 12, &bitmapDC, 0, 0, SRCCOPY);
	//	}
		//
	//	else
	//	{
			memDC.BitBlt(rect.left - 1, rect.top, 2, 20, &bitmapDC, 0, 0, SRCCOPY);
			pOldbitmap = bitmapDC.SelectObject(&bitmap2);
			memDC.BitBlt(rect.left + 1, rect.top, 1, 20, &bitmapDC, 0, 0, SRCCOPY);
	//	}
//
		bitmapDC.SelectObject(pOldbitmap);

		int nWidth = rect.Width() - 4;
		CBitmap* pOldBitmap2 = bitmapDC.SelectObject(&bitmap2);
		memDC.StretchBlt(rect.left + 2, 0, nWidth, 1, &bitmapDC, 0, 0, 1, 20, SRCCOPY);
		bitmapDC.SelectObject(pOldBitmap2);


		CBitmap* pOldBitmap3 = bitmapDC.SelectObject(&bitmap3);
		memDC.BitBlt((rect.right - 2), 0, 2, 20, &bitmapDC, 0, 0, SRCCOPY);
		bitmapDC.SelectObject(pOldBitmap3);
	//
		DRAWITEMSTRUCT DrawItemStruct;
		GetItemRect(i, &rectItem);

		DrawItemStruct.CtlType		= 100;
		DrawItemStruct.hDC			= dc.GetSafeHdc();
		DrawItemStruct.itemAction	= ODA_DRAWENTIRE;
		DrawItemStruct.hwndItem		= GetSafeHwnd();
		DrawItemStruct.rcItem		= rectItem;
		DrawItemStruct.itemID		= i;
		DrawItem(&DrawItemStruct);

		UINT uFormat = DT_SINGLELINE | DT_NOPREFIX | DT_TOP | DT_CENTER;

		CFont font;
		LOGFONT lf;
		memset(&lf, 0, sizeof(LOGFONT));
		lf.lfHeight = 18;
		wcscpy(lf.lfFaceName, _T("Tohoma"));
		font.CreateFontIndirect(&lf);
		CFont* def_font = memDC.SelectObject(&font);
		memDC.SetBkMode(TRANSPARENT);
		rectItem.DeflateRect(2, 2, 2, 2);

		TCHAR buf[256];
		HD_ITEM hditem;

		hditem.mask = HDI_TEXT | HDI_FORMAT | HDI_ORDER;
		hditem.pszText = buf;
		hditem.cchTextMax = 255;
		GetItem(DrawItemStruct.itemID, &hditem);
		memDC.DrawText(buf, &rectItem, uFormat);
		memDC.SelectObject(def_font);
		font.DeleteObject();
	}
}


BOOL CListHeaderCtrl::OnEraseBkgnd(CDC* pDC)
{
	return false;
}