Rich Edit 控件是一个窗口,用户可以在其中输入和编辑文本,可以为文本分配字符和段落格式,并可以包含嵌入式OLE对象,它由 CRichEditCtrl 类表示。
步骤1 - 删除TODO行,然后从工具箱中拖动一个Rich Edit控件和三个按钮。
步骤2 - 将这三个按钮的标题分别从粗体,斜体和下划线更改为IDC_BUTTON_BOLD,IDC_BUTTON_ITALIC和IDC_BUTTON_UNDERLINE。
步骤3 - 将以下属性设置为True:Multiline,Want Return,Vertical Scroll。
步骤4 - 为Rich Edit Control添加控制变量m_richEdit。
步骤5 - 转到CMFCRichEditApp并在CMFCRichEditApp::InitInstance()函数中调用::AfxInitRichEdit2(),如以下代码所示。
BOOL CMFCRichEditApp::InitInstance() { //TODO: call AfxInitRichEdit2() to initialize richedit2 library. //InitCommonControlsEx() is required on Windows XP if an application //manifest specifies use of ComCtl32.dll version 6 or later to enable //visual styles. Otherwise, any window creation will fail. INITCOMMONCONTROLSEX InitCtrls; InitCtrls.dwSize = sizeof(InitCtrls); //Set this to include all the common control classes you want to use //in your application. InitCtrls.dwICC = ICC_WIN95_CLASSES; InitCommonControlsEx(&InitCtrls); ::AfxInitRichEdit2(); CWinApp::InitInstance(); AfxEnableControlContainer(); //Create the shell manager, in case the dialog contains //any shell tree view or shell list view controls. CShellManager *pShellManager = new CShellManager; //Activate "Windows Native" visual manager for enabling themes in MFC controls CMFCVisualManager::SetDefaultManager(RUNTIME_CLASS(CMFCVisualManagerWindows)); //Standard initialization //If you are not using these features and wish to reduce the size //of your final executable, you should remove from the following //the specific initialization routines you do not need //Change the registry key under which our settings are stored //TODO: You should modify this string to be something appropriate //such as the name of your company or organization SetRegistryKey(_T("Local AppWizard-Generated Applications")); CMFCRichEditDlg dlg; m_pMainWnd = &dlg; INT_PTR nResponse = dlg.DoModal(); if (nResponse == IDOK) { //TODO: Place code here to handle when the dialog is //dismissed with OK }else if (nResponse == IDCANCEL) { //TODO: Place code here to handle when the dialog is //dismissed with Cancel }else if (nResponse == -1) { TRACE(traceAppMsg, 0, "Warning: dialog creation failed, so application is terminating unexpectedly.\n"); TRACE(traceAppMsg, 0, "Warning: if you are using MFC controls on the dialog, you cannot #define _AFX_NO_MFC_CONTROLS_IN_DIALOGS.\n"); } //Delete the shell manager created above. if (pShellManager != NULL) { delete pShellManager; } //Since the dialog has been closed, return FALSE so that we exit the //application, rather than start the application's message pump. return FALSE; }
步骤6 - 为所有三个按钮添加Click事件处理程序。这是这些事件的实现。
void CMFCRichEditDlg::OnBnClickedButtonBold() { //TODO: Add your control notification handler code here CHARFORMAT Cfm; m_richEdit.GetSelectionCharFormat(Cfm); Cfm.cbSize = sizeof(CHARFORMAT); Cfm.dwMask = CFM_BOLD; Cfm.dwEffects ^= CFE_BOLD; m_richEdit.SetSelectionCharFormat(Cfm); m_richEdit.SetFocus(); } void CMFCRichEditDlg::OnBnClickedButtonItalic() { //TODO: Add your control notification handler code here CHARFORMAT Cfm; m_richEdit.GetSelectionCharFormat(Cfm); Cfm.cbSize = sizeof(CHARFORMAT); Cfm.dwMask = CFM_ITALIC; Cfm.dwEffects ^= CFE_ITALIC; m_richEdit.SetSelectionCharFormat(Cfm); m_richEdit.SetFocus(); } void CMFCRichEditDlg::OnBnClickedButtonUnderline() { //TODO: Add your control notification handler code here CHARFORMAT Cfm; m_richEdit.GetSelectionCharFormat(Cfm); Cfm.cbSize = sizeof(CHARFORMAT); Cfm.dwMask = CFM_UNDERLINE; Cfm.dwEffects ^= CFE_UNDERLINE; m_richEdit.SetSelectionCharFormat(Cfm); m_richEdit.SetFocus(); }
步骤7 - 编译并执行上述代码后,您将看到以下输出,现在输入文本并通过选择文本来更改其格式,然后单击三个按钮中的任何一个。