JVCL Help:TJvConversion
JVCL Help: TJvConversion Class
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TJvConversion
TJvMSTextConversion
TJvStreamConversion
run\JvRichEdit.pas
Summary
Converts rich text data or plain text from one encoding format to another.
Pascal
run\JvRichEdit.pas
TJvConversion = class(TObject);
Description
Write a TJvConversion descendant to convert rich text data or plain text from one specific encoding format to another. Register the object with a call to RegisterConversionFormat. Registered conversion objects are used by TJvRichEdit when either the LoadFromFile, LoadFromStream, SaveToFile or SaveToStream method of its Lines property called.
A TJvRichEdit control will call the methods of a conversion object in the following order:
- Init, to initialize the converter.
- CanHandle, to determine whether the converter can handle a specific extension.
- IsFormatCorrect, to determine whether the converter can handle a specific file or stream. (onlyfor import operations) * Open
- Multiple ConvertRead or ConvertWrite calls.
- Retry, if an error occurred, followed again by multiple ConvertRead or ConvertWrite calls.
- Done, to finalize the converter.
The following objects are descendants of TJvConversion:
| Class | Function |
| TJvRTFConversion | Reads or writes rich text data. |
| TJvTextConversion | Reads or writes plain text. |
| TJvStreamConversion | Base class for stream converters. |
| TJvOEMConversion | Converts rich text data from and to OEM formatted text. |
| TJvMSTextConversion | Wrapper for a MS Text conversion dll. |
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