#pragma once
// CMyButton
class CMyButton : public CButton
{
DECLARE_DYNAMIC(CMyButton)
protected:
//按钮的外边框
CPen m_BoundryPen;
enum SYTLE{ROUNDRECT,ELLIPSE,UPTRIANGLE,DOWNTRIANGLE}m_Style; // 按钮的外观样式
//鼠标指针置于按钮之上时按钮的内边框
CPen m_InsideBoundryPenLeft;
CPen m_InsideBoundryPenRight;
CPen m_InsideBoundryPenTop;
CPen m_InsideBoundryPenBottom;
//按钮获得焦点时按钮的内边框
CPen m_InsideBoundryPenLeftSel;
CPen m_InsideBoundryPenRightSel;
CPen m_InsideBoundryPenTopSel;
CPen m_InsideBoundryPenBottomSel;
//按钮的底色,包括有效和无效两种状态
CBrush m_FillActive;
CBrush m_FillInactive;
//按钮的状态
BOOL m_bOver; //鼠标位于按钮之上时该值为true,反之为flase
BOOL m_bTracking; //在鼠标按下没有释放时该值为true
BOOL m_bSelected; //按钮被按下是该值为true
BOOL m_bFocus; //按钮为当前焦点所在时该值为true
CBitmap m_NormalBitmap;
CBitmap m_PressedBitmap;
CBitmap m_FocusBitmap;
CBitmap m_OverBitmap;
CBitmap m_MaskBitmap;
CBitmap m_BackBitmap;
// 是否使用蒙板
bool IsMask;
bool IsMaskRgn;
bool IsBackBmp;
CRect BackRect;
public:
void SetRgnMask(int nMaskBmpId, bool nAction);//设置位图转成有效区域
void SetBackBmp(int nBgdBmpId,CRect rect);
void SetMaskBitmapId(int mask, bool action);//设置蒙板图片,显示不规则图片
static HRGN BitmapToRegion(HBITMAP hBmp, COLORREF cTransparentColor, COLORREF cTolerance = RGB(0,0,0));//位图转换成区域
void SetRgnStyle(SYTLE nStyle); // 设置按钮有效区域的样式
void SetBitmapId(int nOver,int nNormal,int nPressed,int nFocus); // 设定按钮各种状态的图片ID
virtual void DoGradientFill(CDC *pDC, CRect* rect);//绘制按钮的底色
virtual void DrawInsideBorder(CDC *pDC, CRect* rect);//绘制按钮的内边框
CMyButton();
virtual ~CMyButton();
protected:
DECLARE_MESSAGE_MAP()
public:
virtual void PreSubclassWindow();
virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
//afx_msg LRESULT OnMouseLeave(WPARAM wParam, LPARAM lParam);
//afx_msg LRESULT OnMouseHover(WPARAM wParam, LPARAM lParam);
public:
afx_msg void OnMouseMove(UINT nFlags, CPoint point);
afx_msg LRESULT OnMouseLeave(WPARAM wParam, LPARAM lParam);
afx_msg LRESULT OnMouseHover(WPARAM wParam, LPARAM lParam);
};
// ControlButton.cpp : implementation file
//
#include "stdafx.h"
#include "MyButton.h"
#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif
/
// CMyButton
IMPLEMENT_DYNAMIC(CMyButton, CButton)
CMyButton::CMyButton()
{
m_BoundryPen.CreatePen(PS_INSIDEFRAME | PS_SOLID, 1, RGB(0, 0, 0));
m_InsideBoundryPenLeft.CreatePen(PS_INSIDEFRAME | PS_SOLID, 3, RGB(250, 196, 88));
m_InsideBoundryPenRight.CreatePen(PS_INSIDEFRAME | PS_SOLID, 3, RGB(251, 202, 106));
m_InsideBoundryPenTop.CreatePen(PS_INSIDEFRAME | PS_SOLID, 2, RGB(252, 210, 121));
m_InsideBoundryPenBottom.CreatePen(PS_INSIDEFRAME | PS_SOLID, 2, RGB(229, 151, 0));
m_FillActive.CreateSolidBrush(RGB(223, 222, 236));
m_FillInactive.CreateSolidBrush(RGB(222, 223, 236));
m_InsideBoundryPenLeftSel.CreatePen(PS_INSIDEFRAME | PS_SOLID, 3, RGB(153, 198, 252));
m_InsideBoundryPenTopSel.CreatePen(PS_INSIDEFRAME | PS_SOLID, 2, RGB(162, 201, 255));
m_InsideBoundryPenRightSel.CreatePen(PS_INSIDEFRAME | PS_SOLID, 3, RGB(162, 189, 252));
m_InsideBoundryPenBottomSel.CreatePen(PS_INSIDEFRAME | PS_SOLID, 2, RGB(162, 201, 255));
m_bOver = m_bSelected = m_bTracking = m_bFocus = FALSE;
IsMask = FALSE;
IsMaskRgn = FALSE;
IsBackBmp = FALSE;
m_Style = ROUNDRECT;
}
CMyButton::~CMyButton()
{
m_BoundryPen.DeleteObject();
m_InsideBoundryPenLeft.DeleteObject();
m_InsideBoundryPenRight.DeleteObject();
m_InsideBoundryPenTop.DeleteObject();
m_InsideBoundryPenBottom.DeleteObject();
m_FillActive.DeleteObject();
m_FillInactive.DeleteObject();
m_InsideBoundryPenLeftSel.DeleteObject();
m_InsideBoundryPenTopSel.DeleteObject();
m_InsideBoundryPenRightSel.DeleteObject();
m_InsideBoundryPenBottomSel.DeleteObject();
}
BEGIN_MESSAGE_MAP(CMyButton, CButton)
ON_WM_MOUSEMOVE()
ON_MESSAGE(WM_MOUSELEAVE, OnMouseLeave)
ON_MESSAGE(WM_MOUSEHOVER, OnMouseHover)
END_MESSAGE_MAP()
/
// CMyButton message handlers
void CMyButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct)
{
//从lpDrawItemStruct获取控件的相关信息
CRect rect = lpDrawItemStruct->rcItem;
CDC *pDC=CDC::FromHandle(lpDrawItemStruct->hDC);
int nSaveDC=pDC->SaveDC();
UINT state = lpDrawItemStruct->itemState;
//获取按钮的状态
if (state & ODS_FOCUS)
{
m_bFocus = TRUE;
m_bSelected = TRUE;
}
else
{
m_bFocus = FALSE;
m_bSelected = FALSE;
}
if (state & ODS_SELECTED || state & ODS_DEFAULT)
{
m_bFocus = TRUE;
}
//根据按钮的状态贴图
if (m_bOver)
{
CDC MemDC;
MemDC.CreateCompatibleDC(pDC);
CBitmap *pOldBmp;
pOldBmp = MemDC.SelectObject(&m_OverBitmap);
BITMAP bmp;
m_OverBitmap.GetObject(sizeof(bmp),&bmp);
//pDC->StretchBlt(0,0,rect.Width(),rect.Height(),&MemDC,0,0,bmp.bmWidth,bmp.bmHeight,SRCCOPY);
if (IsMask==TRUE) //值为真则去除图片背景
{
CDC MaskDC;
MaskDC.CreateCompatibleDC(pDC);
if (IsBackBmp==TRUE)//使用和主窗口相同的背景图片
{
CBitmap *pOldBmp;
CDC BackDC;
BackDC.CreateCompatibleDC(pDC);
pOldBmp = MaskDC.SelectObject(&m_MaskBitmap);
BackDC.SelectObject(&m_BackBitmap);
pDC->BitBlt(0,0,rect.Width(),rect.Height(),&BackDC,BackRect.left,BackRect.top,SRCCOPY);
}
pDC->BitBlt(0,0,rect.Width(),rect.Height(),&MaskDC,0,0,MERGEPAINT);
pDC->BitBlt(0,0,rect.Width(),rect.Height(),&MemDC,0,0,SRCAND);
ReleaseDC(&MaskDC);
}
else
{
pDC->BitBlt(0,0,rect.Width(),rect.Height(),&MemDC,0,0,SRCCOPY);
}
pDC->RestoreDC(nSaveDC);
}
else
{
CDC MemDC;
MemDC.CreateCompatibleDC(pDC);
CBitmap *pOldBmp;
pOldBmp = MemDC.SelectObject(&m_NormalBitmap);
BITMAP bmp;
m_NormalBitmap.GetObject(sizeof(bmp),&bmp);
//pDC->StretchBlt(0,0,rect.Width(),rect.Height(),&MemDC,0,0,bmp.bmWidth,bmp.bmHeight,SRCCOPY);
if (IsMask==TRUE)
{
CDC MaskDC;
MaskDC.CreateCompatibleDC(pDC);
if (IsBackBmp==TRUE)
{
CBitmap *pOldBmp;
CDC BackDC;
BackDC.CreateCompatibleDC(pDC);
pOldBmp = MaskDC.SelectObject(&m_MaskBitmap);
BackDC.SelectObject(&m_BackBitmap);
pDC->BitBlt(0,0,rect.Width(),rect.Height(),&BackDC,BackRect.left,BackRect.top,SRCCOPY);
}
CBitmap *pOldBmp;
pOldBmp = MaskDC.SelectObject(&m_MaskBitmap);
//BITMAP bmp;
//m_MaskBitmap.GetObject(sizeof(bmp),&bmp);
pDC->BitBlt(0,0,rect.Width(),rect.Height(),&MaskDC,0,0,MERGEPAINT);
pDC->BitBlt(0,0,rect.Width(),rect.Height(),&MemDC,0,0,SRCAND);
}
else
{
pDC->BitBlt(0,0,rect.Width(),rect.Height(),&MemDC,0,0,SRCCOPY);
}
pDC->RestoreDC(nSaveDC);
}
//按钮被按下(选中)
if (state & ODS_SELECTED)
{
CDC MemDC;
MemDC.CreateCompatibleDC(pDC);
CBitmap *pOldBmp;
pOldBmp = MemDC.SelectObject(&m_PressedBitmap);
BITMAP bmp;
m_PressedBitmap.GetObject(sizeof(bmp),&bmp);
//pDC->StretchBlt(0,0,rect.Width(),rect.Height(),&MemDC,0,0,bmp.bmWidth,bmp.bmHeight,SRCCOPY);
if (IsMask==TRUE)
{
CDC MaskDC;
MaskDC.CreateCompatibleDC(pDC);
if (IsBackBmp==TRUE)
{
CBitmap *pOldBmp;
CDC BackDC;
BackDC.CreateCompatibleDC(pDC);
pOldBmp = MaskDC.SelectObject(&m_MaskBitmap);
BackDC.SelectObject(&m_BackBitmap);
pDC->BitBlt(0,0,rect.Width(),rect.Height(),&BackDC,BackRect.left,BackRect.top,SRCCOPY);
}
CBitmap *pOldBmp;
pOldBmp = MaskDC.SelectObject(&m_MaskBitmap);
//BITMAP bmp;
//m_MaskBitmap.GetObject(sizeof(bmp),&bmp);
pDC->BitBlt(0,0,rect.Width(),rect.Height(),&MaskDC,0,0,MERGEPAINT);
pDC->BitBlt(0,0,rect.Width(),rect.Height(),&MemDC,0,0,SRCAND);
}
else
{
pDC->BitBlt(0,0,rect.Width(),rect.Height(),&MemDC,0,0,SRCCOPY);
}
pDC->RestoreDC(nSaveDC);
}
}
//绘制按钮的底色
void CMyButton::DoGradientFill(CDC *pDC, CRect* rect)
{
CBrush brBk[64];
int nWidth = rect->Width();
int nHeight = rect->Height();
CRect rct;
int i;
for (i = 0; i < 64; i ++)
{
if (m_bOver)
{
if (m_bFocus)
brBk[i].CreateSolidBrush(RGB(255 - (i / 4), 255 - (i / 4), 255 - (i / 3)));
else
brBk[i].CreateSolidBrush(RGB(255 - (i / 4), 255 - (i / 4), 255 - (i / 5)));
}
else
{
if (m_bFocus)
brBk[i].CreateSolidBrush(RGB(255 - (i / 3), 255 - (i / 3), 255 - (i / 4)));
else
brBk[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, &brBk[((i * 63) / nHeight)]);
}
for (i = 0; i < 64; i ++)
brBk[i].DeleteObject();
}
// 设置蒙板图片,显示不规则图片
void CMyButton::SetMaskBitmapId(int mask, bool action)
{
IsMask = action;
m_MaskBitmap.LoadBitmap(mask);
}
//绘制按钮的内边框
void CMyButton::DrawInsideBorder(CDC *pDC, CRect* rect)
{
CPen *pLeft, *pRight, *pTop, *pBottom;
if (m_bSelected && !m_bOver)
{
pLeft = & m_InsideBoundryPenLeftSel;
pRight = &m_InsideBoundryPenRightSel;
pTop = &m_InsideBoundryPenTopSel;
pBottom = &m_InsideBoundryPenBottomSel;
}
else
{
pLeft = &m_InsideBoundryPenLeft;
pRight = &m_InsideBoundryPenRight;
pTop = &m_InsideBoundryPenTop;
pBottom = &m_InsideBoundryPenBottom;
}
CPoint oldPoint = pDC->MoveTo(rect->left, rect->bottom - 1);
CPen* pOldPen = pDC->SelectObject(pLeft);
pDC->LineTo(rect->left, rect->top + 1);
pDC->SelectObject(pRight);
pDC->MoveTo(rect->right - 1, rect->bottom - 1);
pDC->LineTo(rect->right - 1, rect->top);
pDC->SelectObject(pTop);
pDC->MoveTo(rect->left - 1, rect->top);
pDC->LineTo(rect->right - 1, rect->top);
pDC->SelectObject(pBottom);
pDC->MoveTo(rect->left, rect->bottom);
pDC->LineTo(rect->right - 1, rect->bottom);
pDC->SelectObject(pOldPen);
pDC->MoveTo(oldPoint);
if (m_bSelected && !m_bOver)
DrawFocusRect(pDC->m_hDC,rect);
}
void CMyButton::PreSubclassWindow()
{
// TODO: Add your specialized code here and/or call the base class
CButton::PreSubclassWindow();
ModifyStyle(0, BS_OWNERDRAW);
}
// 设置按钮有效区域的样式
void CMyButton::SetRgnStyle(SYTLE nStyle)
{
m_Style = nStyle;
//设置按钮的有效区域(实现异型按钮)
CRect rc;
GetClientRect(&rc);
// 设置有效区域
// ROUNDRECT,ELLIPSE,UPTRIANGLE,DOWNTRIANGLE
CRgn rgn;
if(m_Style==ROUNDRECT) // 圆角矩形
{
rgn.CreateRoundRectRgn(rc.left,rc.top,rc.right,rc.bottom,5,5);
}
else if(m_Style==ELLIPSE)// 椭圆
{
rgn.CreateEllipticRgn(rc.left,rc.top,rc.right,rc.bottom);
// AfxMessageBox("我是椭圆形");
}
else if(m_Style==UPTRIANGLE)// 上三角
{
CPoint ptArray[] ={CPoint(rc.left+rc.Width()/2,rc.top),
CPoint(rc.left,rc.bottom),
CPoint(rc.right,rc.bottom)};
VERIFY(rgn.CreatePolygonRgn(ptArray, 3, ALTERNATE));
}
else if(m_Style==UPTRIANGLE)// 下三角
{
CPoint ptArray[] ={CPoint(rc.left,rc.top),
CPoint(rc.right,rc.top),
CPoint(rc.left+rc.Width()/2,rc.bottom)};
VERIFY(rgn.CreatePolygonRgn(ptArray, 3, ALTERNATE));
}
int nRes = SetWindowRgn(rgn,TRUE);
if (nRes==0)
{
AfxMessageBox(_T("设置形状不成功呢"));
}
rgn.DeleteObject();
}
// 设定按钮各种状态的图片ID
void CMyButton::SetBitmapId(int nOver,int nNormal,int nPressed,int nFocus)
{
if(m_NormalBitmap.m_hObject)
{
m_NormalBitmap.DeleteObject();
}
if(m_PressedBitmap.m_hObject)
{
m_PressedBitmap.DeleteObject();
}
if(m_FocusBitmap.m_hObject)
{
m_FocusBitmap.DeleteObject();
}
if(m_OverBitmap.m_hObject)
{
m_OverBitmap.DeleteObject();
}
m_NormalBitmap.LoadBitmap(nNormal);
m_PressedBitmap.LoadBitmap(nPressed);
m_FocusBitmap.LoadBitmap(nFocus);
m_OverBitmap.LoadBitmap(nOver);
}
//从一副位图的不透明的像素中创建一个区域
HRGN CMyButton::BitmapToRegion(HBITMAP hBmp, COLORREF cTransparentColor, COLORREF cTolerance)
{
HRGN hRgn = NULL;
if (hBmp)
{
// Create a memory DC inside which we will scan the bitmap content
HDC hMemDC = CreateCompatibleDC(NULL);
if (hMemDC)
{
// Get bitmap size
BITMAP bm;
GetObject(hBmp, sizeof(bm), &bm);
// Create a 32 bits depth bitmap and select it into the memory DC
BITMAPINFOHEADER RGB32BITSBITMAPINFO = {
sizeof(BITMAPINFOHEADER), // biSize
bm.bmWidth, // biWidth;
bm.bmHeight, // biHeight;
1, // biPlanes;
32, // biBitCount
BI_RGB, // biCompression;
0, // biSizeImage;
0, // biXPelsPerMeter;
0, // biYPelsPerMeter;
0, // biClrUsed;
0 // biClrImportant;
};
VOID * pbits32;
HBITMAP hbm32 = CreateDIBSection(hMemDC,
(BITMAPINFO *)&RGB32BITSBITMAPINFO, DIB_RGB_COLORS, &pbits32, NULL, 0);
if (hbm32)
{
HBITMAP holdBmp = (HBITMAP)SelectObject(hMemDC, hbm32);
// Create a DC just to copy the bitmap into the memory DC
HDC hDC = CreateCompatibleDC(hMemDC);
if (hDC)
{
// Get how many bytes per row we have for the bitmap bits (rounded up to 32 bits)
BITMAP bm32;
GetObject(hbm32, sizeof(bm32), &bm32);
while (bm32.bmWidthBytes % 4)
bm32.bmWidthBytes++;
// Copy the bitmap into the memory DC
HBITMAP holdBmp = (HBITMAP)SelectObject(hDC, hBmp);
BitBlt(hMemDC, 0, 0, bm.bmWidth, bm.bmHeight, hDC, 0, 0, SRCCOPY);
// For better performances, we will use the ExtCreateRegion() function to create the
// region. This function take a RGNDATA structure on entry. We will add rectangles by
// amount of ALLOC_UNIT number in this structure.
#define ALLOC_UNIT 100
DWORD maxRects = ALLOC_UNIT;
HANDLE hData = GlobalAlloc(GMEM_MOVEABLE, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects));
RGNDATA *pData = (RGNDATA *)GlobalLock(hData);
pData->rdh.dwSize = sizeof(RGNDATAHEADER);
pData->rdh.iType = RDH_RECTANGLES;
pData->rdh.nCount = pData->rdh.nRgnSize = 0;
SetRect(&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
// Keep on hand highest and lowest values for the "transparent" pixels
BYTE lr = GetRValue(cTransparentColor);
BYTE lg = GetGValue(cTransparentColor);
BYTE lb = GetBValue(cTransparentColor);
BYTE hr = min(0xff, lr + GetRValue(cTolerance));
BYTE hg = min(0xff, lg + GetGValue(cTolerance));
BYTE hb = min(0xff, lb + GetBValue(cTolerance));
// Scan each bitmap row from bottom to top (the bitmap is inverted vertically)
BYTE *p32 = (BYTE *)bm32.bmBits + (bm32.bmHeight - 1) * bm32.bmWidthBytes;
for (int y = 0; y < bm.bmHeight; y++)
{
// Scan each bitmap pixel from left to right
for (int x = 0; x < bm.bmWidth; x++)
{
// Search for a continuous range of "non transparent pixels"
int x0 = x;
LONG *p = (LONG *)p32 + x;
while (x < bm.bmWidth)
{
BYTE b = GetRValue(*p);
if (b >= lr && b <= hr)
{
b = GetGValue(*p);
if (b >= lg && b <= hg)
{
b = GetBValue(*p);
if (b >= lb && b <= hb)
// This pixel is "transparent"
break;
}
}
p++;
x++;
}
if (x > x0)
{
// Add the pixels (x0, y) to (x, y+1) as a new rectangle in the region
if (pData->rdh.nCount >= maxRects)
{
GlobalUnlock(hData);
maxRects += ALLOC_UNIT;
hData = GlobalReAlloc(hData, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), GMEM_MOVEABLE);
pData = (RGNDATA *)GlobalLock(hData);
}
RECT *pr = (RECT *)&pData->Buffer;
SetRect(&pr[pData->rdh.nCount], x0, y, x, y+1);
if (x0 < pData->rdh.rcBound.left)
pData->rdh.rcBound.left = x0;
if (y < pData->rdh.rcBound.top)
pData->rdh.rcBound.top = y;
if (x > pData->rdh.rcBound.right)
pData->rdh.rcBound.right = x;
if (y+1 > pData->rdh.rcBound.bottom)
pData->rdh.rcBound.bottom = y+1;
pData->rdh.nCount++;
// On Windows98, ExtCreateRegion() may fail if the number of rectangles is too
// large (ie: > 4000). Therefore, we have to create the region by multiple steps.
if (pData->rdh.nCount == 2000)
{
HRGN h = ExtCreateRegion(NULL, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), pData);
if (hRgn)
{
CombineRgn(hRgn, hRgn, h, RGN_OR);
DeleteObject(h);
}
else
hRgn = h;
pData->rdh.nCount = 0;
SetRect(&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
}
}
}
// Go to next row (remember, the bitmap is inverted vertically)
p32 -= bm32.bmWidthBytes;
}
// Create or extend the region with the remaining rectangles
HRGN h = ExtCreateRegion(NULL, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), pData);
if (hRgn)
{
CombineRgn(hRgn, hRgn, h, RGN_OR);
DeleteObject(h);
}
else
hRgn = h;
// Clean up
GlobalFree(hData);
SelectObject(hDC, holdBmp);
DeleteDC(hDC);
}
DeleteObject(SelectObject(hMemDC, holdBmp));
}
DeleteDC(hMemDC);
}
}
return hRgn;
}
// 设置位图转成有效区域
void CMyButton::SetRgnMask(int nMaskBmpId, bool nAction)
{
CBitmap bmp;
HRGN rgn;
IsMaskRgn = nAction;
bmp.LoadBitmap(nMaskBmpId);
rgn = BitmapToRegion((HBITMAP)bmp,RGB(255,255,255));
if (IsMaskRgn==TRUE)
{
SetWindowRgn(rgn,TRUE);
}
}
void CMyButton::SetBackBmp(int nBgdBmpId,CRect rect)
{
IsBackBmp = TRUE;
BackRect = rect;
m_BackBitmap.LoadBitmap(nBgdBmpId);
}
void CMyButton::OnMouseMove(UINT nFlags, CPoint point)
{
// TODO: 在此添加消息处理程序代码和/或调用默认值
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);
}
LRESULT CMyButton::OnMouseLeave(WPARAM wParam, LPARAM lParam)
{
m_bOver = FALSE;
m_bTracking = FALSE; //鼠标离开按钮
InvalidateRect(NULL, FALSE); //让按钮重画
return 0;
}
LRESULT CMyButton::OnMouseHover(WPARAM wParam, LPARAM lParam)
{
m_bOver = TRUE; //鼠标盘旋在按钮上空
InvalidateRect(NULL); //重画!
return 0;
}