.DefaultValue issues

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Topic: .DefaultValue issues
Posted: 13 October 2008 at 8:35pm

Hello,

.Value = Variant
.Defaultvalue = String

Both properties should contain the same vartype (Variant).

With PropertyItemEnum, DefaultValue contains the text instead of the selected data value. This makes it impossible to compare "if .Value <> .DefaultValue then ...".

Please fix this issues in the next version.
A new property ".ValueChanged" would be nice too.

Thank you,
Josef

Product: Xtreme SuitePro ActiveX v13.2.1
Platform: Windows 2008 (64bit)
Language: Visual Basic 6.0

Aaron

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Posted: 22 October 2008 at 2:22pm

Hi,

Did you try to compare both values. I don't see what your problem is...
What about ValueChanged event?

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Josef

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Posted: 23 October 2008 at 6:27pm

Hi Aaron,

the problem is this (on German windows):

Private Sub PropGrid_ValueChanged(ByVal Item As XtremePropertyGrid.IPropertyGridItem)



    ' .AddChildItem(PropertyItemBool, "BoolItem", True)

    Debug.Print Item.Value, Item.DefaultValue

    '           Falsch      True

    '           Wahr        True





    ' With .AddChildItem(PropertyItemEnum, "EnumItem", 10)

    '    .Constraints.Add "TestData 0", 0

    '    .Constraints.Add "TestData 5", 5

    '    .Constraints.Add "TestData 10", 10

    '    .Constraints.Add "TestData 15", 15

    ' End With

    Debug.Print Item.Value, Item.DefaultValue

                '0             TestData 10

                '5             TestData 10

                '10            TestData 10

                '15            TestData 10



    ' In both cases, you can't do this:

    With Item

        If .DefaultValue <> .Value Then

            Me.cmdSave.Enabled = true

        End If

    End With

    

End Sub

Hope you can see the problem now.

Thank you,
Josef

Product: Xtreme SuitePro ActiveX v13.2.1
Platform: Windows 2008 (64bit)
Language: Visual Basic 6.0

Aaron

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Posted: 24 October 2008 at 2:23am

Hi,

In someway your code doesn't work and that is strange??? You would expect that it would work.

I tried it with your code and failed, but you can do it like this:

cmdSave.Enabled = IIf((Item.Value <> Item.DefaultValue), True, False)

This will work

and that's why I wondered why you said you couldn't compare both values.

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Josef

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Posted: 24 October 2008 at 6:21pm

Hello Aaron,

Of course it is strange, if my code does not work

!

My code would work, if this description of Defaultvalue in SymbolReference.chm would be true:

"The DefaultValue is the value provided when the item was added with the AddChildItem method."

This is not true, because the value added with AddChildItem is a variant datatype, but Defaultvalue is string.

BTW: Your code snippet would have the same problem as my sample code

To make it work, you have to convert .Defaultvalue to Variant:

cmdSave.Enabled = (Item.Value <> CBool(Item.DefaultValue))

But this is only valid, if Item.Type = PropertyItemBool.
So you have to write different code for each ItemType, instead of just using

If .DefaultValue <> .Value Then

for all items.

Please try this real life sample (I think it addresses the same problem):

With .AddChildItem(PropertyItemEnum, "Default Addresslist", 5)

    .Constraints.Add "AddressBook1", 0

    .Constraints.Add "  All Users", 5

    .Constraints.Add "  Public Folders", 10

    .Constraints.Add "AddressBook2", 15

    .Constraints.Add "  All Users", 20

    .Constraints.Add "  Public Folders", 25

    .Constraints.Add "AddressBook3", 30

    .Constraints.Add "  All Users", 35

    .Constraints.Add "  Public Folders", 40

End With

1. Although the value added with AddChildItem is 5, the preselected Combobox-Item is the third " All Users" item (35).

2. How would you set cmdSave.Enabled in ValueChanged event, if user selects another " All Users" item? Defaultvalue contains string " All Users" instead of variant 5.

Please think about this issue again, hope I can change your mind.

Thank you,
Josef

Product: Xtreme SuitePro ActiveX v13.2.1
Platform: Windows 2008 (64bit)
Language: Visual Basic 6.0

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Posted: 26 October 2008 at 4:42am

Hi,

OK, now I know what you mean. Return values of items in ValueChanged event always return string and not the type as assigned to it. I tested your issue with PropertyItemString and it worked, but after testing with different types I have to say this doesn't work at all. Most types will work when comparing the Item.Value with Item.DefaultValue, but most isn't good enough

Enum: returns value selected index of constraint instead of caption
Bool: returns value True,False instead of "True","False"
Color: returns a right value but only when assigning the DefaultValue yourself you can compare both values.
Font: Fontname is working but changing size or other properties isn't

Note: I didn't test PropertyItemOption and PropertyItemEnumFlags

Conlusion: You have to put a lot of effort into it to compare Value and DefaultValue to make it right.

My advice would be adding a property ValueChanged (Read/Write) for propertygrid items, in this case we would only have to check this property and not a lot of coding just to compare both values. There's a property HighlightChangedItems so PropertyGrid control already knows the Item.Value has been changed. So it wouldn't be hard to implement this feature

Thanks a lot

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Posted: 26 October 2008 at 11:57am

Aaron,

Thank you for testing. A new event would help a little, but does not solve the whole problem:

In the Save-code of an option dialog, you will have the same problem: To know which item was changed by enumerating all items.

But again, you can't do this without writing code for each itemtype. A property .ValueChanged would help, but the best solution would be if .Defaultvalue and .Value containts the same variable type (Variant) and .Defaultvalue contains the value added by .AddChildItem and nothing else.

Currently I'm using the .Tag (=variant type) property to store the Defaultvalue and compare .Tag with .Value to see if the item was changed. But in fact, this would not be necessary if DefaultValue would work as described in helpfile.

Thank you,
Josef

Product: Xtreme SuitePro ActiveX v13.2.1
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Posted: 26 October 2008 at 1:52pm

Hi,

If CJ would add ValueChanged property for PropertyGridItem and Item.Value would be changed (new) ValueChanged property flag would be true and we don't have to compare the values anymore. I think this would be better than changing return values (think about previous versions in which other users have build their "workarounds" to get this working like you now

)

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Posted: 22 November 2008 at 5:04am

Hi,

CJ could make HighlightChangedItem public and we could use this to check if the value has been changed

Thanks in advance

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Posted: 28 December 2008 at 5:25am

Aaron wrote:

Hi,

CJ could make HighlightChangedItem public and we could use this to check if the value has been changed

Thanks in advance

Oleg??? Could this be possible in next releases?

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Posted: 29 December 2008 at 3:31am

Added to my TODO list. :)

Oleg, Support Team
CODEJOCK SOFTWARE SOLUTIONS

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Posted: 19 May 2009 at 2:51pm

Hi Oleg,

Is this option removed from TODO list and added to Beta release?

I really hope so because I'm really desperate...

Thanks a lot in advance

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