首先讲解一下程序流程：1：创建主窗口，加载RichEdit的动态链接库。2：在WM_CREATE消息中创建RichEdit窗口。3：设置RichEdit的左编辑宽度，为显示行号留出空间，向RichEdit发送EM_SETMARGINS即可实现。4：在WM_CREATE消息中设置新

1、去掉Tab选项卡上的关闭功能，图标"x"不显示int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct){...  ...//下面设置了子框架上Tab选项卡的一些参数 CMDITabInfo mdiT

Summary: How do you disable the dropping of files in RichEdit version 2.0 with the CRichEditCtrl class?Call the RevokeDragDrop(), passing the pointer to the RichEdit control window, as the param