窗口透明和PNG图片区域透明按钮使用方法

//窗口透明和图片按钮使用方法

/*ModifyStyleEx(0,0x80000);
 HMODULE hModule = LoadLibrary("User32.DLL");
 if(NULL != hModule)
 {
  typedef BOOL (WINAPI *FUNC)(HWND,COLORREF,BYTE,DWORD);
  FUNC func = (FUNC)GetProcAddress(hModule,"SetLayeredWindowAttributes");
  if(func != NULL)
  {
   func(m_hWnd,0x00,240,2);
  }
  FreeLibrary(hModule);
 }

//图片透明按钮使用方法
 //m_BtnBng.SetButtonStyle(m_BtnBng.GetButtonStyle()|BS_OWNERDRAW);
 RECT rt;
 m_BtnBng.GetClientRect(&rt);
 Bitmap Bmp((HINSTANCE)0x400000,MAKEINTRESOURCEW(IDB_BITMAP_ME));
 Bitmap BmpRr((HINSTANCE)0x400000,MAKEINTRESOURCEW(IDB_BITMAP_RR));

 m_BtnBng.Init(CreateRoundRectRgn(0,0,rt.right,rt.bottom,80,30),&Bmp);//theApp.m_hInstance == 0x400000);
 m_BtnBng.SetToolTip("Click BNG to config/view AUTO-VPN");
 m_BtnPe.GetClientRect(&rt);
 m_BtnPe.Init(CreateRoundRectRgn(0,0,rt.right,rt.bottom,80,30),&BmpRr);
 m_BtnPe.SetToolTip("Click PE to config/view VPN's information");
 m_BtnRr.GetClientRect(&rt);
 m_BtnRr.Init(CreateRoundRectRgn(0,0,rt.right,rt.bottom,60,30),&BmpRr);
 m_BtnRr.SetToolTip("Click RR to view related configuration");

RECT rt;

m_Btn1.GetClientRect(&rt);

Bitmap bmp1(L"button01.png");

Graphics gh(&bmp);

gh.DrawImage(&bmp1, 0, 0, rt.right, rt.bottom);

HRGN rgn = CreateRectRgn(rt.left, rt.top, rt.right, rt.bottom);

Color clr;

for(int j=0; j < rt.bottom; j++)

for(int i=0; i< rt.right;i++)

bmp.GetPixel(i,j,&clr);

if(0x00 == clr.GetA())

{

HRGN rgnx = CreateRectRgn(i,j,i+1,j+1);

ComBineRgn(rgn,rgn,rgnx, RGN_DIFF);

DeleteObject(rgnx);

}

}

}

m_Btn1.Init(rgn,&bmp);

*/

//CSButton.h

class CSButton: public CButton
{
// Construction
public:
 CSButton();
 // 初始化值
 void Init(HRGN hrgn,Image* pImageButton);
 // 设置按钮外框的颜色，参数为空时无按钮外框，如SetFrameCOLORREF();
 void SetFrameCOLORREF(COLORREF ColorrefMouseDown = 0,COLORREF ColorrefMouseUp = 0,COLORREF ColorrefMouseMove = 0);
// Attributes
protected:
 // 必须指定的值
 HRGN m_hrgn; // 按钮的区域
 int m_iResourceID; // 按钮的资源ID
// Operations
public:
 CToolTipCtrl m_ToolTipCtrl;
 int m_iMove;
 Image *m_pImageButton;
 bool m_bSetBtnStyle;
 COLORREF m_ColorrefMouseDown;
 COLORREF m_ColorrefMouseUp;
 COLORREF m_ColorrefMouseMove;
 // 按键的字体大小 ，默认是系统的大小，可以设置
 float m_fFontSize;
// Overrides
 // ClassWizard generated virtual function overrides
 //{{AFX_VIRTUAL(CSButton)
 public:
 virtual void DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct);
 virtual BOOL PreTranslateMessage(MSG* pMsg);
 protected:
 virtual LRESULT WindowProc(UINT message, WPARAM wParam, LPARAM lParam);
 //}}AFX_VIRTUAL
// Implementation
public:
 /// 设置提示信息
 void SetToolTip(CString str);
 virtual ~CSButton();
 // Generated message map functions
protected:
 //{{AFX_MSG(CSButton)
 afx_msg void OnLButtonDown(UINT nFlags, CPoint point);
 afx_msg void OnLButtonUp(UINT nFlags, CPoint point);
 afx_msg void OnMouseMove(UINT nFlags, CPoint point);
 afx_msg BOOL OnEraseBkgnd(CDC* pDC);
 //}}AFX_MSG
 DECLARE_MESSAGE_MAP()
};

//CSButton.c

CSButton::CSButton()
{
m_iMove = 0;
m_bSetBtnStyle = true;
m_hrgn = NULL;
m_iResourceID = 0;
m_pImageButton = NULL;
m_fFontSize = 0;
m_ColorrefMouseDown = 0;
m_ColorrefMouseUp = 0;
m_ColorrefMouseMove = 0;
m_ToolTipCtrl.Create(this);
}


CSButton::~CSButton()
{
if(NULL != m_hrgn)
{
DeleteObject(m_hrgn);
m_hrgn = NULL;
}
if(NULL != m_pImageButton)
{
delete m_pImageButton;
m_pImageButton = NULL;
}
}




BEGIN_MESSAGE_MAP(CSButton, CButton)
//{{AFX_MSG_MAP(CSButton)
ON_WM_LBUTTONDOWN()
ON_WM_LBUTTONUP()
ON_WM_MOUSEMOVE()
ON_WM_ERASEBKGND()
//}}AFX_MSG_MAP
END_MESSAGE_MAP()
// CSButton message handlers


void CSButton::Init(HRGN hrgn,Image* pImageButton)
{
if((NULL != hrgn) && (NULL != pImageButton))
{
m_pImageButton = pImageButton->Clone();
m_hrgn = CreateRectRgn(0,0,0,0);
HRGN hrgnDest = CreateRectRgn(0,0,0,0);
CombineRgn(m_hrgn,hrgn,hrgnDest,RGN_OR);
SetWindowRgn(hrgn,true);
DeleteObject(hrgnDest);
}
if(NULL != hrgn)
{
DeleteObject(hrgn);
hrgn = NULL;
}
}


void CSButton::OnLButtonDown(UINT nFlags, CPoint point) 
{
// TODO: Add your message handler code here and/or call default
m_iMove = 2;
//Invalidate();
CButton::OnLButtonDown(nFlags, point);
}


void CSButton::OnLButtonUp(UINT nFlags, CPoint point) 
{
// TODO: Add your message handler code here and/or call default
m_iMove = 0;
//Invalidate();
CButton::OnLButtonUp(nFlags, point);
}


void CSButton::OnMouseMove(UINT nFlags, CPoint point) 
{
if(m_iMove == 0)// && (nFlags != MK_LBUTTON))
{
if(::GetCapture() != m_hWnd)
{
::SetCapture(m_hWnd);
}
m_iMove = 1;
Invalidate();
//GetParent()->Invalidate();
}
if(!PtInRegion(m_hrgn,point.x,point.y))
{
ReleaseCapture();
m_iMove = 0;
//::SendMessage(HWND_BROADCAST,WM_SETTINGCHANGE,0,0);//刷新所有桌面窗口
Invalidate();
//GetParent()->Invalidate();
}
CButton::OnMouseMove(nFlags, point);
}




void CSButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct) 
{
// TODO: Add your code to draw the specified item
//return;
UINT uStyle = DFCS_BUTTONPUSH;

// This code only works with buttons.
ASSERT(lpDrawItemStruct->CtlType == ODT_BUTTON);

// If drawing selected, add the pushed style to DrawFrameControl.
if (lpDrawItemStruct->itemState & ODS_SELECTED)
uStyle |= DFCS_PUSHED;

if(NULL != m_pImageButton)
{

SetBkMode(lpDrawItemStruct->hDC,0);
Graphics graphics(lpDrawItemStruct->hDC);
graphics.SetClip(m_hrgn,CombineModeReplace);
Rect rt;
GetClientRect((RECT*)&rt);
COLORREF Colorref = 0;
switch(m_iMove)
{
case 0:
{
Colorref = m_ColorrefMouseUp;
graphics.DrawImage(m_pImageButton,rt);
break;
}
case 1:
{
Colorref = m_ColorrefMouseMove;
graphics.DrawImage(m_pImageButton,
rt,// dest rect
0,0,m_pImageButton->GetWidth(), m_pImageButton->GetHeight(),// source rect
UnitPixel,NULL,NULL,NULL);
SolidBrush blackBrush(Color(80, 255, 255, 0));
graphics.FillRectangle(&blackBrush, rt);
break;
}
case 2:
{
Colorref = m_ColorrefMouseDown;
ImageAttributes remapAttributes;
graphics.DrawImage(m_pImageButton,
rt,// dest rect
0,0,m_pImageButton->GetWidth()-2, m_pImageButton->GetHeight()-2,// source rect
UnitPixel,&remapAttributes,NULL,NULL);
break;
}
default:break;
}
if(0 != Colorref)
{
CBrush brush(Colorref);
FrameRgn(lpDrawItemStruct->hDC,m_hrgn,(HBRUSH)brush,2,1);
}
CString str;
GetWindowText(str);
if(!str.IsEmpty())
{
WCHAR wstr[100] = {0};
MultiByteToWideChar(CP_ACP,MB_PRECOMPOSED,str,-1,wstr,100);
Font myFont(lpDrawItemStruct->hDC);
float size = myFont.GetSize();
FontFamily fontFamily;
myFont.GetFamily(&fontFamily);
if(m_fFontSize != 0)size = m_fFontSize;
Font myFontUse(&fontFamily,size,0,UnitPixel);
RectF layoutRect(0.0f + (m_iMove == 2 ? 1 : 0), lpDrawItemStruct->rcItem.bottom/2 - size/2 + (m_iMove == 2 ? 1 : 0),lpDrawItemStruct->rcItem.right, lpDrawItemStruct->rcItem.bottom);
StringFormat format;
format.SetAlignment(StringAlignmentCenter);
SolidBrush blackBrush(Color(255, 0, 0, 0));
graphics.DrawString(wstr,wcslen(wstr),&myFontUse,layoutRect,&format,&blackBrush);
}
}

return ;
}






LRESULT CSButton::WindowProc(UINT message, WPARAM wParam, LPARAM lParam) 
{
// TODO: Add your specialized code here and/or call the base class
if(m_bSetBtnStyle && (NULL != m_pImageButton))
{
m_bSetBtnStyle = false;
SetButtonStyle(GetButtonStyle()|BS_OWNERDRAW);
}
return CButton::WindowProc(message, wParam, lParam);
}


BOOL CSButton::OnEraseBkgnd(CDC* pDC) 
{
// TODO: Add your message handler code here and/or call default
return false;
//return CButton::OnEraseBkgnd(pDC);
}


void CSButton::SetFrameCOLORREF(COLORREF ColorrefMouseDown,COLORREF ColorrefMouseUp,COLORREF ColorrefMouseMove)
{
m_ColorrefMouseDown = ColorrefMouseDown;
m_ColorrefMouseUp = ColorrefMouseUp;
m_ColorrefMouseMove = ColorrefMouseMove;
}


BOOL CSButton::PreTranslateMessage(MSG* pMsg) 
{
// TODO: Add your specialized code here and/or call the base class
m_ToolTipCtrl.RelayEvent(pMsg);
return CButton::PreTranslateMessage(pMsg);
}


void CSButton::SetToolTip(CString str)
{
m_ToolTipCtrl.AddTool(this,str);
m_ToolTipCtrl.Activate(TRUE);
}