CtrlTrans_demo VC 透明控件

// CtrlTrans DemoDlg.cpp : implementation file // #include "stdafx.h" #include "CtrlTrans Demo.h" #include "CtrlTrans DemoDlg.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CCtrlTransDemoDlg dialog CCtrlTransDemoDlg::CCtrlTransDemoDlg(CWnd* pParent /*=NULL*/) : CDialog(CCtrlTransDemoDlg::IDD, pParent) { //{{AFX_DATA_INIT(CCtrlTransDemoDlg) // 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); m_Back.LoadBitmap(IDB_BACK); } void CCtrlTransDemoDlg::DoDataExchange(CDataExchange* pDX) { CDialog::DoDataExchange(pDX); //{{AFX_DATA_MAP(CCtrlTransDemoDlg) DDX_Control(pDX, IDC_EDIT1, m_edtTrans); DDX_Control(pDX, IDC_STATIC1, m_stcTrans); //}}AFX_DATA_MAP } BEGIN_MESSAGE_MAP(CCtrlTransDemoDlg, CDialog) //{{AFX_MSG_MAP(CCtrlTransDemoDlg) ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_BN_CLICKED(IDC_BTN_TEXT, OnBtnText) ON_BN_CLICKED(IDC_BTN_BACK, OnBtnBack) ON_BN_CLICKED(IDC_BTN_BACK_TRAN, OnBtnBackTran) //}}AFX_MSG_MAP END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CCtrlTransDemoDlg message handlers BOOL CCtrlTransDemoDlg::OnInitDialog() { CDialog::OnInitDialog(); // 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 m_stcTrans.SetWindowText("StaticTrans sample"); return TRUE; // return TRUE unless you set the focus to a control } // 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 CCtrlTransDemoDlg::OnPaint() { CPaintDC dc(this); // device context for painting CDC MemDC; BITMAP bit; m_Back.GetBitmap(&bit); MemDC.CreateCompatibleDC(&dc); MemDC.SelectObject(m_Back); dc.BitBlt(0, 0, bit.bmWidth, bit.bmHeight, &MemDC, 0, 0, SRCCOPY); if (IsIconic()) { 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 CCtrlTransDemoDlg::OnQueryDragIcon() { return (HCURSOR) m_hIcon; } void CCtrlTransDemoDlg::OnBtnText() { if (m_ColDlg.DoModal() == IDOK) { m_edtTrans.SetTextColor(m_ColDlg.GetColor()); m_stcTrans.SetTextColor(m_ColDlg.GetColor()); } } void CCtrlTransDemoDlg::OnBtnBack() { if (m_ColDlg.DoModal() == IDOK) { m_edtTrans.SetBackColor(m_ColDlg.GetColor()); m_stcTrans.SetBackColor(m_ColDlg.GetColor()); } } void CCtrlTransDemoDlg::OnBtnBackTran() { m_edtTrans.SetBackColor(TRANS_BACK); m_stcTrans.SetBackColor(TRANS_BACK); }