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//头文件

#pragma once
// OwnerdrawTabCtrl.h : header file

/////////////////////////////////////////////////////////////////////////////
// COwnerdrawTabCtrl window

class COwnerdrawTabCtrl : public CTabCtrl
{
// Construction
public:
    COwnerdrawTabCtrl();

// Attributes
public:

// Operations
public:

// Overrides
    // ClassWizard generated virtual function overrides
    //{{AFX_VIRTUAL(COwnerdrawTabCtrl)
    public:
    virtual BOOL Create(LPCTSTR lpszClassName, LPCTSTR lpszWindowName, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID, CCreateContext* pContext = NULL);
    protected:
    virtual void PreSubclassWindow();
    //}}AFX_VIRTUAL

// Implementation
public:
    virtual ~COwnerdrawTabCtrl();

    // Generated message map functions
protected:
    //{{AFX_MSG(COwnerdrawTabCtrl)
    //}}AFX_MSG

  void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);

    DECLARE_MESSAGE_MAP()
};
//CPP实现

// OwnerdrawTabCtrl.h : implementation file
//

#include "stdafx.h"
#include "OwnerdrawTabCtrl.h"

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

/////////////////////////////////////////////////////////////////////////////
// COwnerdrawTabCtrl

COwnerdrawTabCtrl::COwnerdrawTabCtrl()
{
}

COwnerdrawTabCtrl::~COwnerdrawTabCtrl()
{
}

BEGIN_MESSAGE_MAP(COwnerdrawTabCtrl, CTabCtrl)
    //{{AFX_MSG_MAP(COwnerdrawTabCtrl)
    //}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// COwnerdrawTabCtrl message handlers

void COwnerdrawTabCtrl::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
    // TODO: Add your message handler code here and/or call default   
 
  if(lpDrawItemStruct->CtlType == ODT_TAB)
  {   
    CRect rect = lpDrawItemStruct->rcItem;
    INT nTabIndex = lpDrawItemStruct->itemID;
    if (nTabIndex < 0) return;
   
    TCHAR label[64];
    TC_ITEM tci;
    tci.mask = TCIF_TEXT|TCIF_IMAGE;
    tci.pszText = label;    
    tci.cchTextMax = 63;       
    GetItem(nTabIndex, &tci );
   
    CDC* pDC = CDC::FromHandle(lpDrawItemStruct->hDC);
    if (!pDC) return;
    int nSavedDC = pDC->SaveDC();
   
    //填充背景色
    COLORREF rcBack;
    if (lpDrawItemStruct->itemState & CDIS_SELECTED  )
    {
      rcBack = RGB(255, 0, 0);
    }
    else if(lpDrawItemStruct->itemState & (CDIS_DISABLED | CDIS_GRAYED) )
    {
      rcBack = RGB(0, 255, 0);
    }
    else
    {
      rcBack = GetSysColor(COLOR_BTNFACE);
    }   
    pDC->FillSolidRect(rect, rcBack);
    
    rect.top += ::GetSystemMetrics(SM_CYEDGE);
   
    pDC->SetBkMode(TRANSPARENT);
   
    //绘制图片
    CImageList* pImageList = GetImageList();
    if (pImageList && tci.iImage >= 0)
    {
      rect.left += pDC->GetTextExtent(_T(" ")).cx;        // Margin
     
      // Get height of image so we
      IMAGEINFO info;
      pImageList->GetImageInfo(tci.iImage, &info);
      CRect ImageRect(info.rcImage);
      INT nYpos = rect.top;
     
      pImageList->Draw(pDC, tci.iImage, CPoint(rect.left, nYpos), ILD_TRANSPARENT);
      rect.left += ImageRect.Width();
    }
   
    //绘制字体
    COLORREF txtColor;
    if (lpDrawItemStruct->itemState & CDIS_SELECTED  )
    {
      rect.top -= ::GetSystemMetrics(SM_CYEDGE);
     
      txtColor = RGB(0,255,0);
    }
    else if(lpDrawItemStruct->itemState & (CDIS_DISABLED | CDIS_GRAYED) )
    {
      txtColor = RGB(128, 128, 128);     
    }
    else
    {
      txtColor = GetSysColor(COLOR_WINDOWTEXT);
    }   
    pDC->SetTextColor(txtColor);
    pDC->DrawText(label, rect, DT_SINGLELINE|DT_VCENTER|DT_CENTER);
   
    pDC->RestoreDC(nSavedDC);
   
  }

}

void COwnerdrawTabCtrl::PreSubclassWindow()
{
    ModifyStyle(0, TCS_OWNERDRAWFIXED);
    CTabCtrl::PreSubclassWindow();
}

BOOL COwnerdrawTabCtrl::Create(LPCTSTR lpszClassName, LPCTSTR lpszWindowName, DWORD dwStyle, const RECT& rect, CWnd* pParentWnd, UINT nID, CCreateContext* pContext)
{
    // TODO: Add your specialized code here and/or call the base class
    dwStyle |= TCS_OWNERDRAWFIXED;
    return CWnd::Create(lpszClassName, lpszWindowName, dwStyle, rect, pParentWnd, nID, pContext);
}