Topic: Problem with Devexpress and Delphi 2007
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forexreza
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Problem with Devexpress and Delphi 2007
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Posted: 2007/07/04 22:31 |
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Hi,
I have this problem related to ADParams.
Wherever I have a Grid with a detail level I get "Invalid class typecast" in design time.
The problem does not show up in runtime.
sometime I have to restart the whole delphi cause I cannot do anything or move to another part of the delphi because of this error.
I think we need a Adaptor for D11
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Diman
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Re:Problem with Devexpress and Delphi 2007
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Posted: 2007/07/04 23:29 |
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Hello
What is your QGrid version ?
Regards,
Dmitry
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forexreza
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Re:Problem with Devexpress and Delphi 2007
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Posted: 2007/07/05 05:21 |
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ExpressQuantumGrid 6.26
the problem happens when I have the detail as a parametrized query.
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Diman
Admin
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Re:Problem with Devexpress and Delphi 2007
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Posted: 2007/07/09 06:47 |
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Ok, I will check.
Regards,
Dmitry
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forexreza
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Re:Problem with Devexpress and Delphi 2007
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Posted: 2007/07/12 02:44 |
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Thank you for your time
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casagrandeale
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Re:Problem with Devexpress and Delphi 2007
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Posted: 2007/08/02 05:32 |
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Hi, i have the same problem using D2006 with Quantum grid and details.
The invalid type cast error arises when you use the details in sql mode. This is because, cxgrids try to get the Params property as TParam but they are TADParams. Both inherits from TCollection but they are not the same class and thats why this exception happens.
You can check this in the cxDBData unit, in TcxDBProviderDetailFilterAdapter.ReopenSQL
The code is something like this
var
AParams: TParams;
begin
if IsPublishedProp(ADataSet, 'Params') then
begin
AParams := GetObjectProp(ADataSet, 'Params') as TParams; <--- here
if AParams <> nil then
begin
....
Regards!
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casagrandeale
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Re:Problem with Devexpress and Delphi 2007
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Posted: 2007/08/02 05:34 |
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I think that you can solve it temporarily using a TClientDataset with a provider linked to the query
Regards
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Diman
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Re:Problem with Devexpress and Delphi 2007
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Posted: 2007/08/02 06:06 |
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Hello
You should check AnyDACADDONDevEx folder. It contains AnyDAC adapters for DevEx. Choose there appropriate for your Delphi version package and install it.
Regards,
Dmitry
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forexreza
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Re:Problem with Devexpress and Delphi 2007
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Posted: 2007/08/07 23:32 |
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Hi,
I have used the files in that folder although there is nothing for delphi 2007.
I tried to use Delphi 7 files, but unfortunately they did not work for delphi 2007
(how should I install them? just a standard compile?)
I have changed codes in devexpress to solve the problem, but I think there must be other ways to solve it
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Diman
Admin
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Re:Problem with Devexpress and Delphi 2007
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Posted: 2007/08/07 23:39 |
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Take cxADAdaptersD10.dpk, open it in notepad and adjust RQUIRES clause:
requires
rtl,
dbrtl,
adortl,
cxDataD10,
daADCompD10;
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Sorry, at moment I does not have D2007. But I does not think, there will be other issues ...
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