RichTextBox Scrolling in VB6

Posted On 2017-08-17 by BlackBeltVB
Tags: VB6 Custom Functions VB6 String Handling VB6 Windows API 
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How to create a "chat" style window. This sample duplicates the functionality of a window such as those in mIRC - where text is added to the bottom of a RichTextBox and is scrolled into view IF the scroll bar is at the bottom, but doesn't move the window when the user has scrolled up. 

Special Instructions

Uses the following API functions and messages:

  • CallWindowProc
  • GetScrollInfo
  • LockWindowUpdate
  • SetWindowLong


Requires the Professional or Enterprise version of VB5 or VB6. 

This code originally appeared on, and has been republished here with the permission of Matt Hart.

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