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  • Exchange table
  • Rounding difference
WINDEV
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WEBDEV
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WINDEV Mobile
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Stored procedures
Converts a currency into another currency.
Note: The converted currencies can differ from the Euro. For the conversions into Euros, use eToCurrency and eToEuro.
WEBDEV - Browser code Important: In browser code, eChangeCurrency is used to perform approximate calculations without refreshing the page beside the server (save time during the Internet connections). The precision of the calculations performed in browser code does not correspond to the Euro standard. To perform precise calculations, we advise you to send the page back to the server and to perform the calculations in a server code.
Versions 18 and later
Universal Windows 10 App This function is now available in Windows Store apps mode.
New in version 18
Universal Windows 10 App This function is now available in Windows Store apps mode.
Universal Windows 10 App This function is now available in Windows Store apps mode.
Versions 21 and later
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
New in version 21
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Universal Windows 10 App This function is now available in Universal Windows 10 App mode.
Example
// Convert French Francs into Marks
ResConversion = eChangeCurrency(150, eFRF, eDEM)
Reports and QueriesWindowsLinuxWindows MobilePHPAjaxUser code (UMC)
// Convert Pesetas into Belgium Francs and manage the rounding differences
// Two decimal places are used for the conversion
ResConversion = eChangeCurrency(10000, eESP, eBEF, 2, ResDiff)
Syntax
<Result> = eChangeCurrency(<Value to Convert> , <Source Currency> , <Destination Currency> [, <Number of Decimals> [, <Rounding difference>]])
<Result>: Currency
Value converted into the specified currency.
WEBDEV - Browser code This parameter is a real.
<Value to Convert>: Currency
Amount to convert. This value is converted:
  • from the <Source Currency> to the currency whose identifier is "0" (the Euro by default),
  • from the currency whose identifier is "0" (the Euro by default) to the <Destination Currency>.
WEBDEV - Browser code This parameter is a real.
<Source Currency>: Integer or constant
Identifier of the source currency or constant associated with the source currency (see the Notes).
<Destination Currency>: Integer or constant
Identifier of the destination currency or constant associated with the destination currency (see the Notes).
<Number of Decimals>: Optional integer
Number of decimal places used for the result of the conversion (2 by default).
<Rounding difference>: Optional currency
Variable retrieving the rounding difference caused by the conversion. This difference is expressed in the source currency.
WEBDEV - Browser code This parameter is not available. No rounding difference can be retrieved.
Remarks

Exchange table

An exchange table is stored in memory. Each currency is associated with:
  • A currency number used to identify the currency by programming.
  • A constant used to identify the currency by programming.
  • A caption (up to 7 characters): this caption is displayed in the "Currency + Euro" control if the input mask allows it (the $ sign is indicated).
  • An exchange rate. This exchange rate corresponds to the exchange rate of the currency in relation to the Euro.
This exchange table is as follows:
Currency NumberConstantCountryExchange RateDefault caption
0eEUREuro zone1EURO
1eFRFFrance6.55957F
2eITLItaly1936.27ITL
3eBEFBelgium40.3399BEF
4eLUFLuxembourg40.3399LUF
5eDEMGermany1.95583DEM
6eATSAustria13.7603ATS
8eESPSpain166.386ESP
9eIEPIreland0.787564IEP
10eNLGNetherlands2.20371NLG
11ePTEPortugal200.482PTE
14eGRDGreece340.750GRD
15eFIMFinland5.94573FIM
Currencies not taking part in the Euro
7eDKKDenmark0DKK
12eGBPGreat Britain0GBP
13eSEKSweden0SEK
16 - 250Free1 to Free10
26eCYPCyprus0CYP
27eCZKCzech Republic0CZK
28eEEKEstonia0EEK
29eHUFHungary0HUF
30eLTLLithuania0LTL
31eLVLLatvia0LVL
32eMTLMalta0MTL
33ePLNPoland0SCH
34eSITSlovenia0SIT
35eSKKSlovakia0SKK
The first currency (whose identifier is set to 0) is the currency used as reference for the conversions.
In this exchange table, you have the ability to:
  • add new currencies by modifying the custom currencies if necessary ("user-defined currencies" from 16 to 25) with eInitCurrency,
  • specify the exchange rate of each currency with eInitCurrency.
Caution: The currencies whose exchange rate is set to 0 will not be displayed in the popup menu of the "Currency + Euro" control. To define the exchange rate of these currencies, you must redefine them in the initialization code of the project with eInitCurrency.
Reports and QueriesWindowsLinuxWindows MobileUniversal Windows 10 AppPHPUser code (UMC)

Rounding difference

The <Rounding Difference> is calculated by the following formula:
Round(<Value to Convert>, <Result in Source Currency>, <Number of Decimals>)
For example:
Difference is currency
ResConversion is currency
ResConversion = eChangeCurrency(1.52, eFRF, eDEM, 2, Difference)
ResConversion is set to 0,45 and Difference is set to 0,01.
The following code line allows you to retrieve the initial amount:
InitialAmount = eChangeCurrency(ResConversion, eDEM, eFRF, 2) + Difference
Components
WINDEVWEBDEV - Server codeReports and Queries wd230std.dll
Windows Mobile wp230std.dll
WEBDEV - Browser code WDJS.DLL
Linux wd230std.so
Minimum required version
  • Version 9
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