download了一个xp风格的Button类，发现有点问题，大侠们请出手！

[badguy2002]

rt，在网上download了一个xp风格的button类，和windows xp的按钮几乎一样，但是在debug模式下，一切正常；而在release模式下，按钮接近底部的地方会有一条蓝色的横线，看着很别扭。看了半天，不明白问题出在哪里，所以请大侠们出手相助了！

有兴趣的大侠，请留下一个email，就.h和.cpp两个文件，发给你，帮忙看一下，改一下，如能改好，分数酬谢。

[lxrlxr20021]

是不是，在ASSERT等只有调试版才执行的宏中有涉及数值计算的操作，而在release模式下，这些宏是不执行的，结果造成不易发现的差异？除了这个外，我实在找不出别的原因。

[badguy2002]

我也考虑到应该是这个，但是根本就没有debug特有的那条语句啊，我也考虑到是不是变量没有初始化的原因，但是还是没有找到，所以比较郁闷啊，唉...

[badguy2002]

自己up一把，还望热心大侠留下一email，谢谢

[菜牛]

代码不多吧，贴出来看看。

[badguy2002]

还是有点多的哦
ButtonXp.h文件内容
#if !defined(AFX_XPBUTTON_H__1143C55B_B3B3_4610_851C_2CAAA94E171D__INCLUDED_)
#define AFX_XPBUTTON_H__1143C55B_B3B3_4610_851C_2CAAA94E171D__INCLUDED_

#if _MSC_VER > 1000
#pragma once
#endif // _MSC_VER > 1000
// XPButton.h : header file
// Modified by jingzhou xu

/////////////////////////////////////////////////////////////////////////////
// CXPButton window

class CXPButton : public CButton
{
DECLARE_DYNCREATE(CXPButton)
// Construction
public:
CXPButton();
CPen pBoundryPen;
CPen pInsideBoundryPenLeft;
CPen pInsideBoundryPenTop;
CPen pInsideBoundryPenRight;
CPen pInsideBoundryPenBottom;
CPen *pOldPen;
CBrush pFillActive;
CBrush pFillInactive;
CBrush *pOldBrush;
BOOL m_bOverControl;
BOOL m_bTracking;
CString strCaption;
// Attributes
public:

// Operations
public:

// Overrides
// ClassWizard generated virtual function overrides
//{{AFX_VIRTUAL(CXPButton)
public:
virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
protected:
virtual void PreSubclassWindow();
//}}AFX_VIRTUAL

// Implementation
public:
BOOL Focus;
LRESULT afx_msg OnMouseLeave(WPARAM wparam, LPARAM lparam);
void afx_msg OnMouseHover(WPARAM wparam, LPARAM lparam);
void afx_msg OnMouseMove(UINT nFlags, CPoint point);
void DrawInsideBorder(CDC *pDC,CRect rect);
void DoGradientFill(CDC *pDC,CRect rect);
virtual ~CXPButton();

// Generated message map functions
protected:
//{{AFX_MSG(CXPButton)
// NOTE - the ClassWizard will add and remove member functions here.
//}}AFX_MSG

DECLARE_MESSAGE_MAP()
};

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

//{{AFX_INSERT_LOCATION}}
// Microsoft Visual C++ will insert additional declarations immediately before the previous line.

#endif // !defined(AFX_XPBUTTON_H__1143C55B_B3B3_4610_851C_2CAAA94E171D__INCLUDED_)

[badguy2002]

CButtonXp.cpp文件
// XPButton.cpp : implementation file
// Modified by jingzhou xu

#include "stdafx.h"
#include "XPButton.h"

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

/////////////////////////////////////////////////////////////////////////////
// CXPButton

IMPLEMENT_DYNCREATE(CXPButton, CButton)


CXPButton::CXPButton()
{
pBoundryPen.CreatePen(PS_INSIDEFRAME|PS_SOLID,1,RGB(0,0,0));
pInsideBoundryPenLeft.CreatePen(PS_INSIDEFRAME|PS_SOLID,3,RGB(250,196,88));
pInsideBoundryPenRight.CreatePen(PS_INSIDEFRAME|PS_SOLID,3,RGB(251,202,106));
pInsideBoundryPenTop.CreatePen(PS_INSIDEFRAME|PS_SOLID,2,RGB(252,210,121));
pInsideBoundryPenBottom.CreatePen(PS_INSIDEFRAME|PS_SOLID,2,RGB(229,151,0));
pFillActive.CreateSolidBrush(RGB(222,223,236));
pFillInactive.CreateSolidBrush(RGB(222,223,236));
m_bOverControl = m_bTracking = 0;
}

CXPButton::~CXPButton()
{
// TODO: Cleanup your control's instance data here.
pBoundryPen.DeleteObject();
pFillActive.DeleteObject();
pFillInactive.DeleteObject();
pInsideBoundryPenLeft.DeleteObject();
pInsideBoundryPenRight.DeleteObject();
pInsideBoundryPenBottom.DeleteObject();
pInsideBoundryPenTop.DeleteObject();

}


BEGIN_MESSAGE_MAP(CXPButton, CButton)
//{{AFX_MSG_MAP(CXPButton)
// NOTE - the ClassWizard will add and remove mapping macros here.
//}}AFX_MSG_MAP
ON_WM_MOUSEMOVE()
ON_MESSAGE(WM_MOUSELEAVE, OnMouseLeave)
ON_MESSAGE(WM_MOUSEHOVER, OnMouseHover)
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CXPButton message handlers

void CXPButton::DoGradientFill(CDC *pDC, CRect rect)
{
CBrush pBrush[64];
int nWidth = (rect.right) - (rect.left);
int nHeight = (rect.bottom) - (rect.top);
CRect rct;
for (int i=0; i<64; i++)
{
if(m_bOverControl)
{
if(Focus)
{
pBrush[i].CreateSolidBrush(RGB(255-(i/4), 255-(i/4), 255-(i/3)));
}
else
{
pBrush[i].CreateSolidBrush(RGB(255-(i/4), 255-(i/4), 255-(i/5)));
}
}
else
{
if(Focus)
{
pBrush[i].CreateSolidBrush(RGB(255-(i/3), 255-(i/3), 255-(i/4)));
}
else
{
pBrush[i].CreateSolidBrush(RGB(255-(i/3), 255-(i/3), 255-(i/5)));
}
}
}


for (i=rect.top; i<nHeight+2; i++)
{
rct.SetRect (rect.left, i, nWidth+2, i + 1);
pDC->FillRect (&rct, &pBrush[((i * 63) / nHeight)]);
}

for (i=0; i<64; i++)
{
pBrush[i].DeleteObject();
}

}

void CXPButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
// TODO: Add your code to draw the specified item
CDC* pDC = CDC::FromHandle(lpDrawItemStruct->hDC);
CRect rect = lpDrawItemStruct->rcItem;
UINT state = lpDrawItemStruct->itemState;
CPoint pt;
CString strText;
CString &m_title = strText;
GetWindowText(strText);

// draw the control edges (DrawFrameControl is handy!)

pt.x = 10;
pt.y = 10;

pOldPen = pDC->SelectObject(&pBoundryPen);

pDC->RoundRect(rect,pt);
if(state & ODS_FOCUS)
{
Focus = TRUE;
}
else
{
Focus = FALSE;
}

if (state & ODS_SELECTED)
{
//pDC->DrawFrameControl(rect, DFC_BUTTON, DFCS_BUTTONPUSH | DFCS_PUSHED);
;
}
else
{
// pDC->DrawFrameControl(rect, DFC_BUTTON, DFCS_BUTTONPUSH);
;
}

pDC->SelectObject(pOldPen);
// Deflate the drawing rect by the size of the button's edges
rect.DeflateRect( CSize(GetSystemMetrics(SM_CXEDGE), GetSystemMetrics(SM_CYEDGE)));
// Fill the interior color if necessary

if (m_bOverControl)
{
pOldBrush = pDC->SelectObject(&pFillActive);
//pDC->FloodFill(rect.left+5,rect.top+5,RGB(0,0,0)); //pDC->FillSolidRect(rect, RGB(255, 255, 0)); // yellow
DoGradientFill(pDC,rect);
DrawInsideBorder(pDC,rect);
}
else
{
pOldBrush = pDC->SelectObject(&pFillInactive);
//pDC->FloodFill(rect.left+5,rect.top+5,RGB(0,0,0)); //pDC->FillSolidRect(rect, RGB(0, 0, 255)); // yellow
DoGradientFill(pDC,rect);
}
pDC->SelectObject(pOldBrush);

// Draw the text
if (!m_title.IsEmpty()/*!strText.IsEmpty()*/)
{
CSize Extent = pDC->GetTextExtent(m_title/*strText*/);
CPoint pt( rect.CenterPoint().x - Extent.cx/2,
rect.CenterPoint().y - Extent.cy/2 );

if (state & ODS_SELECTED)
pt.Offset(1,1);

int nMode = pDC->SetBkMode(TRANSPARENT);
//pOldPen = pDC->SelectObject(pBoundryPen);
//CFont *pOldFont = SelectStockFont( pDC );

if (state & ODS_DISABLED)
pDC->DrawState(pt, Extent, m_title/*strCaption*/, DSS_DISABLED, TRUE, 0, (HBRUSH)NULL);
else
pDC->TextOut(pt.x, pt.y, m_title/*strCaption*/);
//pDC->SelectObject(pOldPen);
//pDC->SelectObject(pOldFont);
pDC->SetBkMode(nMode);
}

return;

}

void CXPButton::PreSubclassWindow()
{
// TODO: Add your specialized code here and/or call the base class
ModifyStyle(0, BS_OWNERDRAW);
CButton::PreSubclassWindow();
}

void CXPButton::DrawInsideBorder(CDC *pDC, CRect rect)
{
CPoint oldpoint = pDC->MoveTo(rect.left,rect.bottom-3);
pOldPen = pDC->SelectObject(&pInsideBoundryPenLeft);
pDC->LineTo(rect.left,rect.top+2);
pDC->SelectObject(&pInsideBoundryPenRight);
pDC->MoveTo(rect.right-1,rect.bottom-3);
pDC->LineTo(rect.right-1,rect.top+2);
pDC->SelectObject(&pInsideBoundryPenTop);
pDC->MoveTo(rect.left+2,rect.top);
pDC->LineTo(rect.right-2,rect.top);
pDC->SelectObject(&pInsideBoundryPenBottom);
pDC->MoveTo(rect.left+2,rect.bottom);
pDC->LineTo(rect.right-2,rect.bottom);
pDC->SelectObject(pOldPen);
pDC->MoveTo(oldpoint);
}

void CXPButton::OnMouseMove(UINT nFlags, CPoint point)
{
if (!m_bTracking)
{
TRACKMOUSEEVENT tme;
tme.cbSize = sizeof(tme);
tme.hwndTrack = m_hWnd;
tme.dwFlags = TME_LEAVE|TME_HOVER;
tme.dwHoverTime = 1;
m_bTracking = _TrackMouseEvent(&tme);
}
CButton::OnMouseMove(nFlags, point);

}

void CXPButton::OnMouseHover(WPARAM wparam, LPARAM lparam)
{
m_bOverControl=TRUE;
Invalidate();
}

LRESULT CXPButton::OnMouseLeave(WPARAM wparam, LPARAM lparam)
{
m_bTracking = FALSE;
m_bOverControl = FALSE;
Invalidate(FALSE);
return 0;
}

[badguy2002]

呵呵，结构有点乱了，调整一下，放在自己工程里面

呵呵，大侠应该会用吧，不用我多说了吧