DOCUMENT:Q168824 24-JUL-2001 [vbwin] TITLE :FIX: Setting ComboBox Control Text in Click Event Wipes Out Text PRODUCT :Microsoft Visual Basic for Windows PROD/VER:WINDOWS:5.0,6.0 OPER/SYS: KEYWORDS:kbCtrl kbVBp kbVBp500bug kbVBp600bug kbGrpDSVBDB kbDSupport kbVS600sp4fix kbVS600sp5fix ====================================================================== ------------------------------------------------------------------------------- The information in this article applies to: - Microsoft Visual Basic Professional Edition for Windows, versions 5.0, 6.0 - Microsoft Visual Basic Enterprise Edition for Windows, versions 5.0, 6.0 ------------------------------------------------------------------------------- SYMPTOMS ======== When setting the ComboBox control Text property in the Click event of ComboBox control, the text always returns blank. This is different behavior than Visual Basic 3.0 and Visual Basic 4.0. RESOLUTION ========== Instead of setting the Text property of the ComboBox control in the Click event, change it at the LostFocus event by shifting the focus to another control, such as TextBox, although it leaves the focus set to the TextBox. To work around that, hide a TextBox behind the ComboBox with TabStop property set to False. In the GotFocus event of the TextBox, set the focus back to the ComboBox. To place a TextBox behind the ComboBox in design time, choose the Send To Back menu command from the Format/Order menu. In run time, set the z-order of TextBox to 1. The following code example shows how to keep the text of ComboBox control after being set at the Click event: 1. Start a new Standard EXE project. Form1 is created by default. 2. Add a TextBox control, Text1, to Form1. 3. Add a ComboBox control, Combo1, to Form1. 4. Place the following code into the General Declarations section of Form1: Dim ClickFlag As Integer Private Sub Combo1_Click() ClickFlag = True Text1.SetFocus End Sub Private Sub Combo1_LostFocus() If ClickFlag = True Then Combo1.Text = Mid(Combo1.Text, 4) ClickFlag = False End If End Sub Private Sub Form_Load() ClickFlag = False With Combo1 .AddItem "1. Adam" .AddItem "2. Bob" .AddItem "3. Charles" End With Combo1.Text = Mid(Combo1.List(0), 4) 'Hide Text1 under Combo1 Text1.Move Combo1.Left, Combo1.Top, Combo1.Width, Combo1.Height Text1.ZOrder (1) Text1.TabStop = False End Sub Private Sub Text1_GotFocus() Combo1.SetFocus End Sub STATUS ====== Microsoft has confirmed this to be a bug in the Microsoft products listed at the beginning of this article. This bug was corrected in the latest service pack for Visual Studio 6.0. For additional information about Visual Studio service packs, click the article numbers below to view the articles in the Microsoft Knowledge Base: Q194022 INFO: Visual Studio 6.0 Service Packs, What, Where, Why Q194295 HOWTO: Tell That a Visual Studio Service Pack Is Installed You can download the latest Visual Studio service pack from the following Microsoft Web site: Visual Studio Product Updates (http://msdn.microsoft.com/vstudio/downloads/updates.asp) MORE INFORMATION ================ Steps to Reproduce Behavior --------------------------- 1. Start a new Standard EXE project. Form1 is created by default. 2. Add a ComboBox control, Combo1, to Form1. 3. Paste the following code into the General Declarations section of Form1: Private Sub Combo1_Click() Combo1.Text = Mid(Combo1.Text, 1, 3) End Sub Private Sub Form_Load() With Combo1 .AddItem "1. Adam" .AddItem "2. Bob" .AddItem "3. Charles" End With Combo1.Text = Mid(Combo1.List(0), 4) End Sub 4. Start the program or press the F5 key. 5. Click one item of the ComboBox control drop-down list and note that the text portion of the ComboBox control is wiped out and becomes blank. (c) Microsoft Corporation 2000, All Rights Reserved. Contributions by Adrian Chiang, Microsoft Corporation Additional query words: ====================================================================== Keywords : kbCtrl kbVBp kbVBp500bug kbVBp600bug kbGrpDSVBDB kbDSupport kbVS600sp4fix kbVS600sp5fix Technology : kbVBSearch kbAudDeveloper kbZNotKeyword6 kbZNotKeyword2 kbVB500Search kbVB600Search kbVB500 kbVB600 Version : WINDOWS:5.0,6.0 Issue type : kbbug Solution Type : kbfix ============================================================================= THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY. Copyright Microsoft Corporation 2001.