[fpc-pascal] Property alias

[Krzysztof]

Hi,

Interfaces can have aliases for functions:

Function MyOtherFunction : Integer;
Function IMyInterface.MyFunc = MyOtherFunction;

Can normal object have aliases for properties? For example,
TControl.Caption. I would like to publish this property in my descendant as
"MyExtraText". Is this possible?

Regards
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Re: [fpc-pascal] Property alias

[michael . vancanneyt]

On Fri, 7 Dec 2012, Krzysztof wrote:


Hi,

Interfaces can have aliases for functions:

   Function MyOtherFunction : Integer;
   Function IMyInterface.MyFunc = MyOtherFunction;

Can normal object have aliases for properties? For example,
TControl.Caption. I would like to publish this property in my descendant as
"MyExtraText". Is this possible?


Currently not.

Michael.
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Re: [fpc-pascal] Property alias

[Howard Page-Clark]

On 07/12/12 2:50, Krzysztof wrote:

Hi,

Interfaces can have aliases for functions:

 Function MyOtherFunction : Integer;
 Function IMyInterface.MyFunc = MyOtherFunction;

Can normal object have aliases for properties? For example,
TControl.Caption. I would like to publish this property in my descendant
as "MyExtraText". Is this possible?


You can, of course, define a MyExtraText property with a setter and 
getter that refer to an existing property (or data field if it is 
accessible).


Howard

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Re: [fpc-pascal] Property alias

[Krzysztof]

Thanks


2012/12/7 Howard Page-Clark 

> On 07/12/12 2:50, Krzysztof wrote:
>
>> Hi,
>>
>> Interfaces can have aliases for functions:
>>
>>  Function MyOtherFunction : Integer;
>>  Function IMyInterface.MyFunc = MyOtherFunction;
>>
>> Can normal object have aliases for properties? For example,
>> TControl.Caption. I would like to publish this property in my descendant
>> as "MyExtraText". Is this possible?
>>
>
> You can, of course, define a MyExtraText property with a setter and getter
> that refer to an existing property (or data field if it is accessible).
>
> Howard
>
>
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> fpc-pascal@lists.freepascal.**org
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>
>
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[fpc-pascal] FCL-JSON: Getting the data into pascal classes

[Reimar Grabowski]

Hi,

I have a relatively simple JSON object consisting of some integer and string 
fields and a large (500-50 entries) float array.
Following the parsedemo.pp I extract the values from JSON and put them in my 
pascal class. All works as expected only that I do not seem to find a method to 
copy the complete float array from the TJSONArray object to an array of double 
in one go. I can do it manually by traversing the array but wouldn't it be more 
convenient to have this functionality in TJSONArray (same for string, integer 
and other arrays). Am I missing something?

On another note. There is no automatic way to create an instance of a custom 
class from a TJSONObject or is there?
JSON: {"fooStr":"foobar","fooInt":700,"fooFloatArray":[1.1, 1.2, 1.3]}
Pascal:
TMyCustomClass = class
  fooStr: String;
  fooInt: Integer;
  fooFloatArray: array of double; 
end;

Thanks for any info on this matter.
R.
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[fpc-pascal] Searching for database libraries

[Mark Morgan Lloyd]

When using something like InitialisePostgres3(), if the approximate 
location of the database library (.so or .dll) is known, what's the most 
effective way of finding the exact file? Is there a single routine that 
does a recursive search?


The reason that I ask is that it appears that the most efficient way of 
getting libpq.dll for Windows is to install the ODBC drivers, and they 
go into a directory typically named like C:\Program 
Files\psql\ODBC\\bin where  is a version number.


--
Mark Morgan Lloyd
markMLl .AT. telemetry.co .DOT. uk

[Opinions above are the author's, not those of his employers or colleagues]
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