BUG: Using WM_SETREDRAW w/ TreeView Control Gives Odd Results

ID: Q130611

The information in this article applies to:

• Microsoft Win32 Software Development Kit (SDK)

SYMPTOMS

If a program uses the WM_SETREDRAW message to turn off updating of a TreeView control before adding items, the TreeView control can behave strangely.

For example, if the item being added to the control uses the TVI_FIRST style to insert it to the top of the tree and the top of the tree is scrolled above the top of the visible window, it may be impossible to bring the item into view.

Another possible symptom is that the TreeView control doesn't repaint itself at all. These problems occur only if the program has used the WM_SETREDRAW message to turn off updating the TreeView control.

RESOLUTION

Don't use the WM_SETREDRAW message with the TreeView control while adding items to the control.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article.

Additional query words:

Keywords          : kbCtrl kbNTOS351bug kbNTOS400bug kbTreeView kbGrpUser kbWinOS95bug kbWinOS98bug 
Issue type        : kbbug

Last Reviewed: December 26, 1998