BUG: Rich Text Box Control Does Not Word Wrap

Setting the Multiline property of a Rich Text Box control to True does not behave as expected. By setting Multiline to True, words should wrap when they are typed or displayed in a Rich Text Box control. However, they do not.

This behavior occurs only if the RightMargin property of the Rich Text Box control is set to 0. However, the Help file topic for the RightMargin property of the RichTextBox control incorrectly states the following:

To work around this behavior, set the RightMargin property to a value greater than zero. To get the Multiline behavior to work as expected, set the RightMargin property equal to or slightly less than the Width property of the Rich Text Box control.

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. We are researching this bug and will post new information here in the Microsoft Knowledge Base as it becomes available.

This behavior occurs only with version 5.00.3714 of the Rich Text Box control that is shipped with Microsoft Visual Basic 5.0.

Steps to Reproduce Behavior

1. Create a new Standard EXE in Visual Basic 5.0. Form1 is created by default.
2. Press CTRL+T to bring up the Components dialog.
3. Select the Microsoft Rich Text Box Control 5.0.
4. Draw a Rich Text Box Control onto Form1.
5. Set the following properties for RichTextBox1:

         Multiline = True
         RightMargin = 0
   
   						

6. Run the project.
7. Type words into the Rich Text Box until the typed text reaches beyond the right hand margin of the control. Note that the text will not wrap to the next line but will continue off to the right.