pictureToBlob
pictureToBlob* ( aPicture : picture , pictureBlob : blob , codec : string )
| Parameter | Type | Description | |
|---|---|---|---|
| aPicture | picture | ← | Picture variable |
| pictureBlob | blob | → | Blob to receive the converted picture |
| codec | string | → | Picture codec ID |
Description
The pictureToBlob command converts a picture stored in a variable to another format and places the resulting picture in a blob.
A picture variable is passed in the aPicture parameter. A blob variable containing the converted picture is passed in the pictureBlob parameter.
Pass in the codec parameter a string setting the conversion format.
A Codec can be an extension (for example, “.gif”) or a Mime type (for example “image/jpeg”).
Once the command has been executed, the pictureBlob contains the picture in the specified format.
If the conversion was successful, the system variable OK is set to 1. If the conversion has failed (converter not available), OK is set to 0 and the generated blob is empty (0 byte).
Example
You want to convert an image from a proprietary format to GIF format. You can use a code such as: