MFC默认的编辑框控件是白底的，有时候我们需要按自己的要求显示，比如我写过一个程序，用编辑框控件CEdit作为控制台输出，黑色背景，绿色文字。下面讲下如何修改编辑框控件样式。
1）首先我们通过MFC的向导创建一个基于对话框的程序Test，往界面拖一个Edit Control,ID设置为：IDC_SHOWMSG，由于我将该编辑框作为控制台输出，所以设置属性：Read Only:True，Multiline:True
2）选中该编辑框控件，在Class Wizard中添加WM_CTLCOLOR消息
3）在对话框类声明中添加如下三个成员变量：
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CBrush m_brMine; COLORREF m_BlackColor; COLORREF m_TextColor; |
4）在OnInitDialog()中添加如下初始化代码：
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m_BlackColor = RGB(10,10,10); // 黑色背景 m_TextColor=RGB(0,255,0); // 文本颜色设置为绿色 m_brMine.CreateSolidBrush(m_BlackColor); // 黑色背景色 |
5）修改OnCtlColor()函数：
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HBRUSH CToolBoxDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) { HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor); if ((pWnd->GetDlgCtrlID() == IDC_SHOWMSG) && (nCtlColor == CTLCOLOR_STATIC) ) { pDC->SetBkColor(m_BlackColor); pDC->SetTextColor(m_TextColor); hbr = (HBRUSH) m_brMine; return m_brMine; } else { hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor); return hbr; } } |
6）最后的效果如下图所示：
完整代码：
TestDlg.h
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// TestDlg.h : header file // #pragma once // CTestDlg dialog class CTestDlg : public CDialogEx { // Construction public: CTestDlg(CWnd* pParent = NULL); // standard constructor // Dialog Data enum { IDD = IDD_TEST_DIALOG }; protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support // Implementation protected: HICON m_hIcon; // Generated message map functions virtual BOOL OnInitDialog(); afx_msg void OnSysCommand(UINT nID, LPARAM lParam); afx_msg void OnPaint(); afx_msg HCURSOR OnQueryDragIcon(); DECLARE_MESSAGE_MAP() CBrush m_brMine; COLORREF m_BlackColor; COLORREF m_TextColor; public: afx_msg HBRUSH OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor); }; |
TestDlg.cpp
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// TestDlg.cpp : implementation file // #include "stdafx.h" #include "Test.h" #include "TestDlg.h" #include "afxdialogex.h" #ifdef _DEBUG #define new DEBUG_NEW #endif // CAboutDlg dialog used for App About class CAboutDlg : public CDialogEx { public: CAboutDlg(); // Dialog Data enum { IDD = IDD_ABOUTBOX }; protected: virtual void DoDataExchange(CDataExchange* pDX); // DDX/DDV support // Implementation protected: DECLARE_MESSAGE_MAP() }; CAboutDlg::CAboutDlg() : CDialogEx(CAboutDlg::IDD) { } void CAboutDlg::DoDataExchange(CDataExchange* pDX) { CDialogEx::DoDataExchange(pDX); } BEGIN_MESSAGE_MAP(CAboutDlg, CDialogEx) END_MESSAGE_MAP() // CTestDlg dialog CTestDlg::CTestDlg(CWnd* pParent /*=NULL*/) : CDialogEx(CTestDlg::IDD, pParent) { m_hIcon = AfxGetApp()->LoadIcon(IDR_MAINFRAME); } void CTestDlg::DoDataExchange(CDataExchange* pDX) { CDialogEx::DoDataExchange(pDX); } BEGIN_MESSAGE_MAP(CTestDlg, CDialogEx) ON_WM_SYSCOMMAND() ON_WM_PAINT() ON_WM_QUERYDRAGICON() ON_WM_CTLCOLOR() END_MESSAGE_MAP() // CTestDlg message handlers BOOL CTestDlg::OnInitDialog() { CDialogEx::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) { BOOL bNameValid; CString strAboutMenu; bNameValid = strAboutMenu.LoadString(IDS_ABOUTBOX); ASSERT(bNameValid); 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 m_BlackColor = RGB(10,10,10); // 黑色背景 m_TextColor=RGB(0,255,0); // 文本颜色设置为绿色 m_brMine.CreateSolidBrush(m_BlackColor); // 黑色背景色 SetDlgItemText(IDC_SHOWMSG,L"黑色背景，绿色文字"); return TRUE; // return TRUE unless you set the focus to a control } void CTestDlg::OnSysCommand(UINT nID, LPARAM lParam) { if ((nID & 0xFFF0) == IDM_ABOUTBOX) { CAboutDlg dlgAbout; dlgAbout.DoModal(); } else { CDialogEx::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 CTestDlg::OnPaint() { if (IsIconic()) { CPaintDC dc(this); // device context for painting SendMessage(WM_ICONERASEBKGND, reinterpret_cast<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 { CDialogEx::OnPaint(); } } // The system calls this function to obtain the cursor to display while the user drags // the minimized window. HCURSOR CTestDlg::OnQueryDragIcon() { return static_cast<HCURSOR>(m_hIcon); } HBRUSH CTestDlg::OnCtlColor(CDC* pDC, CWnd* pWnd, UINT nCtlColor) { HBRUSH hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor); // 由于编辑框属性设置为Read only,所以为CTLCOLOR_STATIC，相当于Static Text if ((pWnd->GetDlgCtrlID() == IDC_SHOWMSG) && (nCtlColor == CTLCOLOR_STATIC) ) { pDC->SetBkColor(m_BlackColor); pDC->SetTextColor(m_TextColor); hbr = (HBRUSH) m_brMine; return m_brMine; } else { hbr = CDialog::OnCtlColor(pDC, pWnd, nCtlColor); return hbr; } } |
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很有帮助，感谢博主~