FIX: MouseUp Event Not Triggered in DblClick w/Comctl32

ID: Q171494

The information in this article applies to:

Microsoft Visual Basic Learning, Professional, and Enterprise Editions for Windows, version 5.0

SYMPTOMS

When you double-click one of the Windows Common Controls, the second MouseUp event is not triggered. The Windows Common Controls affected are the ToolBar (with AllowCustomize set to True or False), StatusBar, ListView, and TreeView.

STATUS

Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug has been fixed in Visual Studio 97 Service Pack 2.

For more information on the Visual Studio 97 Service Pack 2, please see the following article in the Microsoft Knowledge Base:

Q170365 INFO: Visual Studio 97 Service Packs - What, Where, and Why

For a list of the Visual Basic 5.0 bugs that were fixed in the Visual Studio 97 Service Pack 2, please see the following article in the Microsoft Knowledge Base:

Q171554 INFO: Visual Basic 5.0 Fixes in Visual Studio 97 Service Pack 2

MORE INFORMATION

Steps to Reproduce Behavior

Create a new "Standard EXE" project.

Click References on the Project menu. Select "Microsoft Windows Common Controls 5.0," and click OK.

Place a ListView control on the default form.

Paste the following code in the form.


      Private Sub ListView1_MouseDown(Button As Integer, _
         Shift As Integer, x As Single, y As Single)
         Debug.Print "MouseDown"
      End Sub

      Private Sub ListView1_MouseUp(Button As Integer, Shift As Integer, _
         x As Single, y As Single)
         Debug.Print "MouseUp"
      End Sub

      Private Sub ListView1_DblClick()
         Debug.Print "DblClick"
      End Sub

Press the F5 key to run the application.

Double-click the ListView control.

When you double-click the ListView control, the Immediate Window will display the following text:


   MouseDown
   MouseUp
   DblClick

If you add code similar to that above to the events of Form1 (rather than the ListView control), the second MouseUp event is triggered as expected. The Immediate Window will display the following text:


   MouseDown
   MouseUp
   DblClick
   MouseUp

Additional query words: comctl32.ocx

Keywords : kbVBp500 kbVS97sp2fix kbGrpVB kbvbp500sp2fix
Version : 5.0
Platform : WINDOWS
Issue type : kbbug