This topic describes the syntax of the CaptionClass functionality.

Syntax

If the CaptionClass property of a field or a control is defined, the function trigger CaptionClassTranslate with ID 15 in Codeunit 1 (ApplicationManagement) is called every time that the field or control is shown. This function replaces the caption, as defined in the design of the field or control, with another string. The following code example shows the syntax for this procedure.

CaptionClassTranslate (<LANGUAGE>;<CAPTIONEXPR>)

LANGUAGE

<DataType> := [Integer]

<DataValue> :=

CAPTIONEXPR

<DataType> := [String]

<Length> <= 80

<DataValue> := <CAPTIONAREA>,<CAPTIONREF>

Two parameters LANGUAGE and CAPTIONEXPR are passed to this function.

LANGUAGE

The LANGUAGE parameter is automatically mentioned as is the Windows Language ID of the active language in Microsoft Dynamics NAV.

For example, if the active language in Microsoft Dynamics NAV is English (United States), LANGUAGE will hold the value 1033.

CAPTIONEXPR

The CAPTIONEXPR parameter contains the value of the CaptionClass property of the field or control. An example is in table 13 Salesperson/Purchaser, the Global Dimension 1 Code field (Field No. 5050) has the string '1,1,1' as its CaptionClass. You can use the debugger to view the value of the CAPTIONEXPR parameter. Set a breakpoint on the CaptionClassTranslate function in codeunit 1, activate the debugger, and then run page 14, Salespeople/Purchasers. The debugger breaks in the CaptionClassTranslate function. In the debugger, choose Variables. In the Debugger Variable List, you can see that the CAPTIONEXPR parameter holds the string '1,1,1'. For more information about the debugger, see Debugging.

Note
In the About This Page window, you will not find the Global Dimension 1 Code field. Instead you find the Department Code field, which represents the CaptionClass property and the CaptionClassTranslate function trigger.

Function Code

The function trigger CaptionClassTranslate with ID 15 resembles a system trigger. A programmer can intervene here every time that the CaptionClass property (if it is defined) is evaluated.

The following example shows the trigger in the CRONUS International Ltd. database.

CaptionClassTranslate(Language : Integer;CaptionExpr : Text[80] : Text[1024])

CommaPosition := STRPOS(CaptionExpr,',');

IF (CommaPosition > 0) AND (CommaPosition < 80) THEN BEGIN

CaptionArea := COPYSTR(CaptionExpr,1,CommaPosition - 1);

CaptionRef := COPYSTR(CaptionExpr,CommaPosition + 1);

CASE CaptionArea OF

'1' : EXIT(DimCaptionClassTranslate(Language, CaptionRef));

'2' : EXIT(VATCaptionClassTranslate(Language, CaptionRef));

'3' : EXIT(CaptionRef);

END;

END;

EXIT(CaptionExpr);

This standard code analyzes and unravels the CAPTIONEXPR parameter. This parameter has the following syntax.

CAPTIONEXPR := <CAPTIONAREA>,<CAPTIONREF>

Depending on the value of the CAPTIONAREA, different procedures are called.

CAPTIONAREA

The first part of the CAPTIONEXPR parameter, to the first comma, is the CAPTIONAREA, and has the following syntax.

CAPTIONAREA

<DataType> := [SubString]

<Length> <= 10

<DataValue> := 1..9999999999

// 1 for Dimension Area

// 2 for VAT

// 3 to return only the CaptionExpr string

CAPTIONREF

The second part of the CAPTIONEXPR parameter, after the first comma, is the CAPTIONREF, and has the following syntax.

CAPTIONREF

<DataType> := [SubString]

<Length> <= 10

<DataValue> :=

IF (<CAPTIONAREA> = 1)

<DIMCAPTIONTYPE>,<DIMCAPTIONREF>

IF (<CAPTIONAREA> = 2)

<VATCAPTIONTYPE>,<VATCAPTIONREF>

Depending on the value of the CAPTIONAREA, CAPTIONREF can consist of one (VATCAPTIONTYPE) or two references (VATCAPTIONTYPE,VATCAPTIONREF or DIMCAPTIONTYPE,DIMCAPTIONREF.

Note
This is how the standard functionality in Microsoft Dynamics NAV deals with the CaptionClass property. Every field or control with a defined CaptionClass has a string in this property that uses the syntax described earlier. For new functionality, a programmer could define other syntax and add code to the function trigger CaptionClassTranslate with ID 15 to handle this syntax.

Syntax for CAPTIONREF

As described earlier, the CAPTIONREF part of the CAPTIONEXPR parameter can have the following syntax. If CAPTIONAREA equals 1:

CAPTIONREF := < DIMCAPTIONTYPE >,< DIMCAPTIONREF >

Or if CAPTIONAREA equals 2:

CAPTIONREF := < VATCAPTIONTYPE >,< VATCAPTIONREF >

Dimension Area

If the CAPTIONAREA equals 1, the caption of the field or control should be retrieved from the dimensions information.

DIMCAPTIONTYPE

This reference determines where the main part of the new caption should be retrieved from, as shown in the following syntax.

DIMCAPTIONTYPE

<DataType> := [SubString]

<Length> <= 10

<DataValue> := 1..6

// 1 to retrieve Code Caption of Global Dimension

// 2 to retrieve Code Caption of Shortcut Dimension

// 3 to retrieve Filter Caption of Global Dimension

// 4 to retrieve Filter Caption of Shortcut Dimension

// 5 to retrieve Code Caption of any kind of Dimensions

// 6 to retrieve Filter Caption of any kind of Dimensions

DIMCAPTIONREF

DIMCAPTIONREF consists of several sub references:

DIMCAPTIONREF:= < number >,< DIMOPTIONALPARAM1>,

< DIMOPTIONALPARAM2 >

The following syntax describes what < number > can be and what <DIMOPTIONALPARAM1> and <DIMOPTIONALPARAM2> are:

DIMCAPTIONREF

<DataType> := [SubString]

<Length> <= 10

<DataValue> :=

IF (<DIMCAPTIONTYPE> = 1)

1..2,<DIMOPTIONALPARAM1>,<DIMOPTIONALPARAM2>

IF (<DIMCAPTIONTYPE> = 2)

1..8,<DIMOPTIONALPARAM1>,<DIMOPTIONALPARAM2>

IF (<DIMCAPTIONTYPE> = 3)

1..2,<DIMOPTIONALPARAM1>,<DIMOPTIONALPARAM2>

IF (<DIMCAPTIONTYPE> = 4)

1..8,<DIMOPTIONALPARAM1>,<DIMOPTIONALPARAM2>

IF (<DIMCAPTIONTYPE> = 5)

[Table]Dimension.[Field]Code, <DIMOPTIONALPARAM1>,

<DIMOPTIONALPARAM2>

IF (<DIMCAPTIONTYPE> = 6)

[Table]Dimension.[Field]Code, <DIMOPTIONALPARAM1>,

<DIMOPTIONALPARAM2>

DIMOPTIONALPARAM1

DIMOPTIONALPARAM1

<DataType> := [SubString]

<Length> <= 30

<DataValue> := [String]

// A string added before the dimension name.

DIMOPTIONALPARAM2

DIMOPTIONALPARAM2

<DataType> := [SubString]

<Length> <= 30

<DataValue> := [String]

// A string added after the dimension name.

VAT

If the CAPTIONAREA equals 2, the caption of the field or control should be replaced by its original caption plus an extra string. This string should state either 'Excl. VAT' or 'Incl. VAT'. The syntax is described in the following section.

VATCAPTIONTYPE

VATCAPTIONTYPE

<DataType> := [SubString]

<Length> := 1

<DataValue> := '0' -> <field caption + 'Excl. VAT'>

'1' -> <field caption + 'Incl. VAT'>

VATCAPTIONREF

VATCAPTIONREF contains the caption of the field or control.

VATCAPTIONREF

<DataType> := [SubString]

<Length> <= 30

<DataValue> := field caption

See Also