ID Number: Q80914
1.00
WINDOWS
buglist1.00
Summary:
There is a problem with the Instant Change Scroll Bar when you change
the Max and Min values in the Changing event procedure. An
"Unrecoverable Application Error" (UAE) may occur and the Visual
Basic 1.0 environment will be unstable to proceed further. Below are
the steps to reproduce the problem.
Microsoft has confirmed this to be a problem with the Instant Change
Scroll Bar custom control supplied with Microsoft Professional Toolkit
for Microsoft Visual Basic programming system version 1.0 for Windows.
We are researching this problem and will new information here as it
becomes available.
More Information:
Steps to Reproduce Problem
--------------------------
1. Run Visual Basic, or from the File menu, choose New Project (ALT,
F, N) if Visual Basic is already running. Form1 is created by
default.
2. From the File menu, choose Add File. In the Files box, select the
INSTSCRL.VBX control file. The Instant Scroll Bar tools will appear
in the Toolbox.
3. Place an InstHScroll (horizontal) or InstVScroll (vertical) Instant
Change Scroll Bar control on Form1.
4. Press the F7 function key to open the Code window. In the Procedure
box, select the Changing event, and enter one of the following
statements:
Sub InstHScroll1_Changing ( )
InstHScroll1.Max = InstHScroll1.Max - 10
End Sub
-or-
Sub InstVScroll1_Changing ()
InstVScroll1.Max = InstHScroll1.Max - 10
End Sub
5. From the Run menu, choose Start, or press F5 to run the program.
6. Click and drag the scroll box to generate a Changing event. An "Out
of Stack Space" error message will be displayed. Press the SPACEBAR
three times to close the error dialog box.
Now when you choose End from the Run menu, a UAE may occur.
Note: The problem does not seem to occur if you click on the
scroll arrows of the scroll bar (Only one "Out of Stack Space" alert
occurs in that case) instead of moving the Instant Change Scroll Bar's
scroll box.
Additional reference words: 1.00