RichTextBox controls that support synchronous scrolling

usingSystem.Windows.Forms; Public classsynchronizedscrollrichtextbox:system.windows.forms.richtextbox{ PublicSynchronizedscrollrichtextbox Synchronized {Get;Set; }  Public Const intWm_vscroll =0x115;  Public Const intEm_linescroll =0xb6; protected Override voidWndProc (refSystem.Windows.Forms.Message msg) {        if(Msg. MSG = = Wm_vscroll | | Msg. MSG = =em_linescroll) {            if(Synchronized! =NULL) {Message message=msg; Message. HWnd=Synchronized.handle; Synchronized.pubwndproc (refmessage); }        }        Base. WndProc (refmsg); }     Public voidPubwndproc (refSystem.Windows.Forms.Message msg) {        Base. WndProc (refmsg); }}

The above code, copied into the project, compiled once, dragged onto the form, for example, drag 2 instances, and then set the Synchronized property to each other in the design interface. The two text boxes can be scrolled synchronously after running.

RichTextBox controls that support synchronous scrolling