www.pudn.com > TransparentWindow.rar > TransparentWindowDlg.cpp

// TransparentWindowDlg.cpp : implementation file 
// 
 
#include "stdafx.h" 
#include "TransparentWindow.h" 
#include "TransparentWindowDlg.h" 
 
#ifdef _DEBUG 
#define new DEBUG_NEW 
#undef THIS_FILE 
static char THIS_FILE[] = __FILE__; 
#endif 
 
///////////////////////////////////////////////////////////////////////////// 
// CAboutDlg dialog used for App About 
 
class CAboutDlg : public CDialog 
{ 
public: 
	CAboutDlg(); 
 
// Dialog Data 
	//{{AFX_DATA(CAboutDlg) 
	enum { IDD = IDD_ABOUTBOX }; 
	//}}AFX_DATA 
 
	// ClassWizard generated virtual function overrides 
	//{{AFX_VIRTUAL(CAboutDlg) 
	protected: 
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support 
	//}}AFX_VIRTUAL 
 
// Implementation 
protected: 
	//{{AFX_MSG(CAboutDlg) 
	//}}AFX_MSG 
	DECLARE_MESSAGE_MAP() 
}; 
 
CAboutDlg::CAboutDlg() : CDialog(CAboutDlg::IDD) 
{ 
	//{{AFX_DATA_INIT(CAboutDlg) 
	//}}AFX_DATA_INIT 
} 
 
void CAboutDlg::DoDataExchange(CDataExchange* pDX) 
{ 
	CDialog::DoDataExchange(pDX); 
	//{{AFX_DATA_MAP(CAboutDlg) 
	//}}AFX_DATA_MAP 
} 
 
BEGIN_MESSAGE_MAP(CAboutDlg, CDialog) 
	//{{AFX_MSG_MAP(CAboutDlg) 
		// No message handlers 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CTransparentWindowDlg dialog 
 
CTransparentWindowDlg::CTransparentWindowDlg(CWnd* pParent /*=NULL*/) 
	: CDialog(CTransparentWindowDlg::IDD, pParent) 
{ 
	//{{AFX_DATA_INIT(CTransparentWindowDlg) 
		// NOTE: the ClassWizard will add member initialization here 
	//}}AFX_DATA_INIT 
	// Note that LoadIcon does not require a subsequent DestroyIcon in Win32 
	m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); 
} 
 
void CTransparentWindowDlg::DoDataExchange(CDataExchange* pDX) 
{ 
	CDialog::DoDataExchange(pDX); 
	//{{AFX_DATA_MAP(CTransparentWindowDlg) 
		// NOTE: the ClassWizard will add DDX and DDV calls here 
	//}}AFX_DATA_MAP 
} 
 
BEGIN_MESSAGE_MAP(CTransparentWindowDlg, CDialog) 
	//{{AFX_MSG_MAP(CTransparentWindowDlg) 
	ON_WM_SYSCOMMAND() 
	ON_WM_PAINT() 
	ON_WM_QUERYDRAGICON() 
	ON_WM_ERASEBKGND() 
	ON_WM_NCHITTEST() 
	ON_WM_SHOWWINDOW() 
	//}}AFX_MSG_MAP 
END_MESSAGE_MAP() 
 
///////////////////////////////////////////////////////////////////////////// 
// CTransparentWindowDlg message handlers 
 
BOOL CTransparentWindowDlg::OnInitDialog() 
{ 
	CDialog::OnInitDialog(); 
 
	// Add "About..." menu item to system menu. 
 
	// IDM_ABOUTBOX must be in the system command range. 
	ASSERT((IDM_ABOUTBOX & 0xFFF0) == IDM_ABOUTBOX); 
	ASSERT(IDM_ABOUTBOX < 0xF000); 
 
	CMenu* pSysMenu = GetSystemMenu(FALSE); 
	if (pSysMenu != NULL) 
	{ 
		CString strAboutMenu; 
		strAboutMenu.LoadString(IDS_ABOUTBOX); 
		if (!strAboutMenu.IsEmpty()) 
		{ 
			pSysMenu->AppendMenu(MF_SEPARATOR); 
			pSysMenu->AppendMenu(MF_STRING, IDM_ABOUTBOX, strAboutMenu); 
		} 
	} 
 
	// Set the icon for this dialog.  The framework does this automatically 
	//  when the application's main window is not a dialog 
	SetIcon(m_hIcon, TRUE);			// Set big icon 
	SetIcon(m_hIcon, FALSE);		// Set small icon 
	 
	// TODO: Add extra initialization here 
	SetupRegion(); 
	return TRUE;  // return TRUE  unless you set the focus to a control 
} 
 
void CTransparentWindowDlg::OnSysCommand(UINT nID, LPARAM lParam) 
{ 
	if ((nID & 0xFFF0) == IDM_ABOUTBOX) 
	{ 
		CAboutDlg dlgAbout; 
		dlgAbout.DoModal(); 
	} 
	else 
	{ 
		CDialog::OnSysCommand(nID, lParam); 
	} 
} 
 
// If you add a minimize button to your dialog, you will need the code below 
//  to draw the icon.  For MFC applications using the document/view model, 
//  this is automatically done for you by the framework. 
 
void CTransparentWindowDlg::OnPaint()  
{ 
	if (IsIconic()) 
	{ 
		CPaintDC dc(this); // device context for painting 
 
		SendMessage(WM_ICONERASEBKGND, (WPARAM) dc.GetSafeHdc(), 0); 
 
		// Center icon in client rectangle 
		int cxIcon = GetSystemMetrics(SM_CXICON); 
		int cyIcon = GetSystemMetrics(SM_CYICON); 
		CRect rect; 
		GetClientRect(&rect); 
		int x = (rect.Width() - cxIcon + 1) / 2; 
		int y = (rect.Height() - cyIcon + 1) / 2; 
 
		// Draw the icon 
		dc.DrawIcon(x, y, m_hIcon); 
	} 
	else 
	{ 
		CDialog::OnPaint(); 
	} 
} 
 
// The system calls this to obtain the cursor to display while the user drags 
//  the minimized window. 
HCURSOR CTransparentWindowDlg::OnQueryDragIcon() 
{ 
	return (HCURSOR) m_hIcon; 
} 
 
void CTransparentWindowDlg::SetupRegion() 
{ 
	CDC* pDC; 
	CDC	 memDC; 
	CBitmap	cBitmap; 
	CBitmap* pOldMemBmp = NULL; 
	COLORREF col; 
	CRect cRect; 
	int	x, y; 
	CRgn wndRgn, rgnTemp; 
 
	pDC = GetDC(); 
	GetWindowRect(&cRect); 
 
	//将模板位图选进设备场景中 
	cBitmap.LoadBitmap(IDB_MASK); 
	memDC.CreateCompatibleDC(pDC); 
	pOldMemBmp = memDC.SelectObject(&cBitmap); 
 
	//创建模板形状的不规则区域 
	wndRgn.CreateRectRgn(0, 0, cRect.Width(), cRect.Height()); 
	for(x=0; x<=cRect.Width(); x++) 
	{ 
		for(y=0; y<=cRect.Height(); y++) 
		{ 
			//将位图中黑色小圆洞对应的区域抠掉 
			col = memDC.GetPixel(x, y); 
			if(col == 0) 
			{ 
				rgnTemp.CreateRectRgn(x, y, x+1, y+1); 
				wndRgn.CombineRgn(&wndRgn, &rgnTemp, RGN_XOR); 
				rgnTemp.DeleteObject();	 
			} 
		} 
	} 
	if (pOldMemBmp) memDC.SelectObject(pOldMemBmp); 
 
	//将不规则区域分配给窗体，也就是创建不规则的窗体 
	SetWindowRgn((HRGN)wndRgn, TRUE); 
	ReleaseDC(pDC); 
} 
 
BOOL CTransparentWindowDlg::OnEraseBkgnd(CDC* pDC)  
{	 
	CRect	rect; 
	GetWindowRect(&rect); 
 
	CDC memDC; 
	CBitmap			cBitmap; 
	CBitmap*		pOldMemBmp = NULL; 
 
	//将背景位图加到设备场景中 
	cBitmap.LoadBitmap(IDB_BACK); 
	memDC.CreateCompatibleDC(pDC); 
	pOldMemBmp = memDC.SelectObject(&cBitmap); 
 
	//将背景位图显示出来 
	pDC->BitBlt(0, 0, rect.Width(), rect.Height(), &memDC, 0, 0, SRCCOPY); 
	if (pOldMemBmp) memDC.SelectObject( pOldMemBmp ); 
	 
	return TRUE; 
//	return CDialog::OnEraseBkgnd(pDC); 
} 
 
 
UINT CTransparentWindowDlg::OnNcHitTest(CPoint point)  
{ 
	UINT nHitTest = CDialog::OnNcHitTest(point);  
 
    return (nHitTest == HTCLIENT)? HTCAPTION:nHitTest; 
} 
 
void CTransparentWindowDlg::OnShowWindow(BOOL bShow, UINT nStatus)  
{ 
	CDialog::OnShowWindow(bShow, nStatus); 
 
	//调整窗体大小，适应位图大小 
	CRect rc; 
	GetClientRect(&rc); 
	rc.right = rc.left + 320; 
	rc.bottom = rc.top + 150; 
	MoveWindow(&rc,TRUE); 
}