12/16/2025 2:36:38 PM
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Forum to discuss usage & tips for SalesLogix controls and other 3rd party ActiveX controls. View the code of conduct for posting guidelines.
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locking down a TComboBox dropdown
Posted: 10 Dec 08 7:31 AM
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How do you prevent users from using/typing anything other than what's in the drop down list? Here's why and what I've done so far:
- Set key=0 in the the keypress control. Prevents typing, but users can still paste into the box with ctrl-v or rt-clk mouse paste. Sneeky 'eh?
- I would use a picklist, but I change the contents of the dropdown based on the type of user logged in.
- Can I / should I create 4 picklists and dynamically change the picklist?
Am I overlooking something simple here? Thanks a bunch.
v7.2.2:
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Re: locking down a TComboBox dropdown
Posted: 10 Dec 08 9:58 AM
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No you are not overlooking something simple....you have to script against it....learned this from SLX Opportunity:SALESPROCESS form.....
0. Set the OnKeyPress event of the combo box.....Key = 0
1A. use the ONDROPDOWN event of the Combo Box for your 'change' action.
1B. for the OnChange I just post a nice MSGBOX and tell them to click on the Drop Down Button and then I close up the view.....too much going on in my form to figure out how to rebuild the combo box on the fly.....your mileage will vary.
2. Set an IsReading variable in the AXFormChange/Opening (I also use a Global Pointer to the ItemINDEX value)
Option Explicit
DIM IsReading, gNextPhaseIDX
SUB AXFormChange(Sender)
''handles databinding OnChange versus User Changes
IsReading = true
gNextPhaseIDX = -1
''''do stuff, including building up the Combo Box and setting its initial Index ( gNextPhaseIDX in this example)!
IsReading = False
END SUB
3. Here is the ONDROPDOWN event call
Sub cbNextPhasesONDROPDOWN(Sender)
DIM I, ITEMP
ITEMP = -100
For i = 0 To SENDER.Items.Count - 1
If SENDER.TEXT = SENDER.Items.Item(i) Then
gNextPhaseIDX = i
iTemp = i
Exit For
End If
NEXT
IF ITEMP < 0 THEN
MSGBOX " Do us all a favor and simply select an item from the drop down list"
reset the index to 1, gNextPhaseIDX or whatever
UNFORTUNATELY YOU MUST rebuild the combo box
exit the sub
END IF
I did post this on the WISHLIST for SLX.....this has been requested multiple times in the past....
RJ |
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