btnst.cpp

《突破Visual C++.NET编程实例五十讲+源文件,初学者学习的好东东！

// BtnST.cpp : 实现文件
#include "stdafx.h"
#include "BtnST.h"

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


// CButtonST

CButtonST::CButtonST()
{
	m_MouseOnButton = FALSE;

	m_hIconIn = NULL;
	m_hIconOut = NULL;
	m_cxIcon = 0;
	m_cyIcon = 0;
	m_hCursor = NULL;
  
	// 缺省风格为平面按钮
	m_bIsFlat = TRUE; 
  
	m_bDrawBorder = TRUE; 
  
	//图标水平排列
	m_nAlign = ST_ALIGN_HORIZ; 
  
	// 显示文本按钮
	m_bShowText = TRUE; 
  
	// 平面按钮不绘制焦点矩形
	m_bDrawFlatFocus = FALSE;

	// 按钮不为标准（缺省）按钮
	m_bIsDefault = FALSE;

	SetDefaultInactiveBgColor();
	SetDefaultInactiveFgColor();
	SetDefaultActiveBgColor();
	SetDefaultActiveFgColor();

	// 不创建工具提示
	m_ToolTip.m_hWnd = NULL;

	// 不为透明按钮
	m_bDrawTransparent = FALSE;
	m_pbmpOldBk = NULL;
} // End of CButtonST


CButtonST::~CButtonST()
{
	// 恢复原来的位图
	if (m_dcBk.m_hDC != NULL && m_pbmpOldBk != NULL)
	{
		m_dcBk.SelectObject(m_pbmpOldBk);
	}

} // End of ~CButtonST


BEGIN_MESSAGE_MAP(CButtonST, CButton)
    //{{AFX_MSG_MAP(CButtonST)
	ON_WM_CAPTURECHANGED()
	ON_WM_SETCURSOR()
	ON_WM_KILLFOCUS()
	ON_WM_MOUSEMOVE()
	//}}AFX_MSG_MAP
END_MESSAGE_MAP()


void CButtonST::SetIcon(int nIconInId, int nIconOutId)
{
	HINSTANCE hInstResource = AfxFindResourceHandle(MAKEINTRESOURCE(nIconInId),
													RT_GROUP_ICON);
	// 设置光标位于按钮上时的图标
	m_hIconIn = (HICON)::LoadImage(hInstResource/*AfxGetApp()->m_hInstance*/, MAKEINTRESOURCE(nIconInId), IMAGE_ICON, 0, 0, 0);
  
	// 设置光标位于按钮外时的图标
	m_hIconOut = (nIconOutId == NULL) ? m_hIconIn : (HICON)::LoadImage(hInstResource/*AfxGetApp()->m_hInstance*/, MAKEINTRESOURCE(nIconOutId), IMAGE_ICON, 0, 0, 0);
  
	ICONINFO ii;

	// 获取图标大小
	ZeroMemory(&ii, sizeof(ICONINFO));
	::GetIconInfo(m_hIconIn, &ii);

	m_cxIcon = (BYTE)(ii.xHotspot * 2);
	m_cyIcon = (BYTE)(ii.yHotspot * 2);

	RedrawWindow();
} 


BOOL CButtonST::SetBtnCursor(int nCursorId)
{
	HINSTANCE hInstResource;
	
	if (m_hCursor != NULL) ::DestroyCursor(m_hCursor);
	m_hCursor = NULL;

	
	if (nCursorId != -1)
	{
		hInstResource = AfxFindResourceHandle(MAKEINTRESOURCE(nCursorId),
											RT_GROUP_CURSOR);
		
		m_hCursor = (HCURSOR)::LoadImage(hInstResource/*AfxGetApp()->m_hInstance*/, MAKEINTRESOURCE(nCursorId), IMAGE_CURSOR, 0, 0, 0);
		
		if (m_hCursor == NULL) return FALSE;
	}

	return TRUE;
}

void CButtonST::SetFlat(BOOL bState)
{
  m_bIsFlat = bState;
  Invalidate();
} 

BOOL CButtonST::GetFlat()
{
  return m_bIsFlat;
} 


void CButtonST::SetAlign(int nAlign)
{
  switch (nAlign)
  {    
    case ST_ALIGN_HORIZ:
         m_nAlign = ST_ALIGN_HORIZ;
         break;
    case ST_ALIGN_VERT:
         m_nAlign = ST_ALIGN_VERT;
         break;
  }
  Invalidate();
} 


int CButtonST::GetAlign()
{
  return m_nAlign;
} 


void CButtonST::DrawBorder(BOOL bEnable)
{
  m_bDrawBorder = bEnable;
} 

const char* CButtonST::GetVersionC()
{
  return "2.5";
} 

const short CButtonST::GetVersionI()
{
  return 25; 
} 


void CButtonST::SetShowText(BOOL bShow)
{
  m_bShowText = bShow;
  Invalidate();
} // End of SetShowText


BOOL CButtonST::GetShowText()
{
  return m_bShowText;
} 

void CButtonST::OnMouseMove(UINT nFlags, CPoint point)
{
	CWnd* pWnd;  
	CWnd* pParent; 
	CButton::OnMouseMove(nFlags, point);

	
	if (nFlags & MK_LBUTTON && m_MouseOnButton == FALSE) return;

	
	if (m_bIsFlat == FALSE) return;

	pWnd = GetActiveWindow();
	pParent = GetOwner();

	if ((GetCapture() != this) && 
		(
#ifndef ST_LIKEIE
		pWnd != NULL && 
#endif
		pParent != NULL)) 
	{
		m_MouseOnButton = TRUE;
		//SetFocus();	
		SetCapture();
		Invalidate();
	}
	else
	{
		/*
		CRect rc;
		GetClientRect(&rc);
		if (!rc.PtInRect(point))
		{
		*/

		POINT p2 = point;
		ClientToScreen(&p2);
		CWnd* wndUnderMouse = WindowFromPoint(p2);
		if (wndUnderMouse != this)
		{
			
			if (m_MouseOnButton == TRUE)
			{
				m_MouseOnButton = FALSE;
				Invalidate();
			}
		
			if (!(nFlags & MK_LBUTTON)) ReleaseCapture();
		}
	}
} 

void CButtonST::OnKillFocus(CWnd * pNewWnd)
{
  CButton::OnKillFocus(pNewWnd);

  // 若按钮不为平面按钮，则返回
  if (m_bIsFlat == FALSE) return;

  if (m_MouseOnButton == TRUE)
  {
    m_MouseOnButton = FALSE;
    Invalidate();
  }
} // End of OnKillFocus


void CButtonST::OnCaptureChanged(CWnd *pWnd) 
{
	if (m_MouseOnButton == TRUE)
	{
		ReleaseCapture();
		Invalidate();
	}

	// 调用基类消息处理函数
	CButton::OnCaptureChanged(pWnd);
} // End of OnCaptureChanged


void CButtonST::DrawItem(LPDRAWITEMSTRUCT lpDIS)
{
#ifdef ST_USE_MEMDC
  CDC  *pdrawDC = CDC::FromHandle(lpDIS->hDC);
  CMemDC memDC(pdrawDC);
  CDC  *pDC = &memDC;
#else	
  CDC* pDC = CDC::FromHandle(lpDIS->hDC);
#endif

  CPen *pOldPen;
  BOOL bIsPressed  = (lpDIS->itemState & ODS_SELECTED);
  BOOL bIsFocused  = (lpDIS->itemState & ODS_FOCUS);
  BOOL bIsDisabled = (lpDIS->itemState & ODS_DISABLED);

  CRect itemRect = lpDIS->rcItem;

  if (m_bIsFlat == FALSE)
  {
    if (bIsFocused || (GetDefault() == TRUE))
    {
      CBrush br(RGB(0,0,0));  
      pDC->FrameRect(&itemRect, &br);
      itemRect.DeflateRect(1, 1);
    }
  }

  // 用背景颜色绘制按钮
  COLORREF bgColor;
  if ((m_MouseOnButton == TRUE) || (bIsPressed))
    bgColor = GetActiveBgColor();
  else
    bgColor = GetInactiveBgColor();

	CBrush br(bgColor);
	// 是否透明？
	if (m_bDrawTransparent == TRUE)
	{
		PaintBk(pDC);
	}
	else
	{
		pDC->FillRect(&itemRect, &br);
	}

  //绘制处于“按下”状态的按钮
  if (bIsPressed)
  {
    if (m_bIsFlat == TRUE)
    {
      if (m_bDrawBorder == TRUE)
      {
	    CPen penBtnHiLight(PS_SOLID, 0, GetSysColor(COLOR_BTNHILIGHT)); // Bianco
        CPen penBtnShadow(PS_SOLID, 0, GetSysColor(COLOR_BTNSHADOW));   // Grigio scuro

        // 暗灰线
        pOldPen = pDC->SelectObject(&penBtnShadow);
        pDC->MoveTo(itemRect.left, itemRect.bottom-1);
        pDC->LineTo(itemRect.left, itemRect.top);
        pDC->LineTo(itemRect.right, itemRect.top);
        // 白线
        pDC->SelectObject(penBtnHiLight);
        pDC->MoveTo(itemRect.left, itemRect.bottom-1);
        pDC->LineTo(itemRect.right-1, itemRect.bottom-1);
        pDC->LineTo(itemRect.right-1, itemRect.top-1);
        //
        pDC->SelectObject(pOldPen);
      }
    }
    else    
    {
      CBrush brBtnShadow(GetSysColor(COLOR_BTNSHADOW));
      pDC->FrameRect(&itemRect, &brBtnShadow);
    }
  }
  else // 不绘制处于“按下”状态的按钮
  {
    CPen penBtnHiLight(PS_SOLID, 0, GetSysColor(COLOR_BTNHILIGHT)); // White
    CPen pen3DLight(PS_SOLID, 0, GetSysColor(COLOR_3DLIGHT));       // Light gray
    CPen penBtnShadow(PS_SOLID, 0, GetSysColor(COLOR_BTNSHADOW));   // Dark gray
    CPen pen3DDKShadow(PS_SOLID, 0, GetSysColor(COLOR_3DDKSHADOW)); // Black

    if (m_bIsFlat == TRUE)
    {
      if (m_MouseOnButton == TRUE && m_bDrawBorder == TRUE)
      {
        // 白线
        pOldPen = pDC->SelectObject(&penBtnHiLight);
        pDC->MoveTo(itemRect.left, itemRect.bottom-1);
        pDC->LineTo(itemRect.left, itemRect.top);
        pDC->LineTo(itemRect.right, itemRect.top);
        // 暗灰线
        pDC->SelectObject(penBtnShadow);
        pDC->MoveTo(itemRect.left, itemRect.bottom-1);
        pDC->LineTo(itemRect.right-1, itemRect.bottom-1);
        pDC->LineTo(itemRect.right-1, itemRect.top-1);
        //
        pDC->SelectObject(pOldPen);
      }
    }
    else
    {