CMyBCGPHeaderCtrl.cpp

// HeaderCtrlCl.cpp : 实现文件
//

#include "stdafx.h"
#include "CMyBCGPHeaderCtrl.h"
//#include "Includes_app.h"

// CMyBCGPHeaderCtrl

IMPLEMENT_DYNAMIC(CMyBCGPHeaderCtrl, CBCGPHeaderCtrl)

CMyBCGPHeaderCtrl::CMyBCGPHeaderCtrl() : m_R(171), m_G(199), m_B(235), m_Gradient(8)
{
	m_Format = "";
	m_fontHeight = 15;
	m_fontWith = 0;
	m_color = RGB(0, 0, 0);
	m_Height=1.5;
}

CMyBCGPHeaderCtrl::~CMyBCGPHeaderCtrl()
{
}


BEGIN_MESSAGE_MAP(CMyBCGPHeaderCtrl, CBCGPHeaderCtrl)
	ON_WM_PAINT()
	ON_MESSAGE(HDM_LAYOUT, OnLayout)
END_MESSAGE_MAP()



// CHeaderCtrlCl 消息处理程序

void CMyBCGPHeaderCtrl::OnPaint()
{
	CPaintDC dc(this); // device context for painting
	// TODO: 在此处添加消息处理程序代码
	// 不为绘图消息调用 CHeaderCtrl::OnPaint()
	int nItem;
	nItem = GetItemCount();//得到有几个单元 
	for (int i = 0; i<nItem; i++)
	{
		CRect tRect;
		GetItemRect(i, &tRect);//得到Item的尺寸
		int R = m_R, G = m_G, B = m_B;
		CRect nRect(tRect);//拷贝尺寸到新的容器中 
		nRect.left++;//留出分割线的地方 
		//绘制立体背景 
		for (int j = tRect.top; j <= tRect.bottom; j++)
		{
			nRect.bottom = nRect.top + 1;
			CBrush _brush;
			_brush.CreateSolidBrush(RGB(R, G, B));//创建画刷 
			dc.FillRect(&nRect, &_brush); //填充背景 
			_brush.DeleteObject(); //释放画刷 
			R -= m_Gradient; G -= m_Gradient; B -= m_Gradient;
			if (R<0)R = 0;
			if (G<0)G = 0;
			if (B<0)B = 0;
			nRect.top = nRect.bottom;
		}
		dc.SetBkMode(TRANSPARENT);
		CFont nFont, *nOldFont;
		//dc.SetTextColor(RGB(250,50,50)); 
		dc.SetTextColor(m_color);
		nFont.CreateFont(m_fontHeight, m_fontWith, 0, 0, 0, FALSE, FALSE, 0, 0, 0, 0, 0, 0, _TEXT("宋体"));//创建字体 
		nOldFont = dc.SelectObject(&nFont);

		UINT nFormat = 1;
		if (m_Format[i] == '0')
		{
			nFormat = DT_LEFT;
			tRect.left += 3;
		}
		else if (m_Format[i] == '1')
		{
			nFormat = DT_CENTER;
		}
		else if (m_Format[i] == '2')
		{
			nFormat = DT_RIGHT;
			tRect.right -= 3;
		}
		TEXTMETRIC metric;
		dc.GetTextMetrics(&metric);
		int ofst = 0;
		ofst = tRect.Height() - metric.tmHeight;
		tRect.OffsetRect(0, ofst / 2);
		dc.DrawText(m_HChar[i], &tRect, nFormat);
		dc.SelectObject(nOldFont);
		nFont.DeleteObject(); //释放字体 
	}
	//画头部剩余部分
	CRect rtRect;
	CRect clientRect;
	GetItemRect(nItem - 1, rtRect);
	GetClientRect(clientRect);
	rtRect.left = rtRect.right + 1;
	rtRect.right = clientRect.right;
	int R = m_R, G = m_G, B = m_B;
	CRect nRect(rtRect);
	//绘制立体背景 
	for (int j = rtRect.top; j <= rtRect.bottom; j++)
	{
		nRect.bottom = nRect.top + 1;
		CBrush _brush;
		_brush.CreateSolidBrush(RGB(R, G, B));//创建画刷 
		dc.FillRect(&nRect, &_brush); //填充背景 
		_brush.DeleteObject(); //释放画刷 
		R -= m_Gradient; G -= m_Gradient; B -= m_Gradient;
		if (R<0)R = 0;
		if (G<0)G = 0;
		if (B<0)B = 0;
		nRect.top = nRect.bottom;
	}


}
LRESULT CMyBCGPHeaderCtrl::OnLayout(WPARAM wParam, LPARAM lParam)
{
	LRESULT lResult = CBCGPHeaderCtrl::DefWindowProc(HDM_LAYOUT, 0, lParam);
	HD_LAYOUT &hdl = *(HD_LAYOUT *)lParam;
	RECT *prc = hdl.prc;
	WINDOWPOS *pwpos = hdl.pwpos;

	//表头高度为原来1.5倍，如果要动态修改表头高度的话，将1.5设成一个全局变量 
	int nHeight = (int)(pwpos->cy * m_Height);
	pwpos->cy = nHeight;
	prc->top = nHeight;
	return lResult;
}