A picture can be inserted in a Collection. But also a picture can be encoded in base64 text which can then be inserted in a Collection as text. Here is a utility method to insert a picture and as well as read back in a Collection:

// ---------------------------------------------------------------------- // Name: INSERT_READBACK_PICTURE_COL // Description: Method will insert a picture that is converted to blob // base64 text into a collection. It will also read back a collection // item that is blob base64 text to a picture variable. // // Parameters: // $1 (POINTER) - Pointer to a collection to insert or readback // $2 (LONGINT) - Location to insert or readback a picture // $3 (POINTER) - Pointe to a picture that is inserted or read back // $4 (TEXT) - Codec text to insert a picture for base64 encoding // ---------------------------------------------------------------------- C_POINTER($1;$col) C_LONGINT($2;$index) C_POINTER($3;$pic) C_TEXT($4;$codec;$blobText) C_BLOB($blob) If (Count parameters>2)   $col:=$1   $index:=$2   $pic:=$3   If (Count parameters=4) // Set a picture in collection     $codec:=$4     If (Type($pic->)=Is picture)       PICTURE TO BLOB($pic->;$blob;$codec)       BASE64 ENCODE($blob;$blobText)       $col->[$index]:=$blobText     End if   Else // Read back a collection item to a picture    $blobText:=$col->[$index]    BASE64 DECODE($blobText;$blob)    BLOB TO PICTURE($blob;$pic->)   End if End if

Here is an example of using the method by inserting a picture in a Collection:

C_TEXT($loc) C_PICTURE($pic) C_COLLECTION(col) $loc:=Get 4D folder(Database folder)+"picture.png" READ PICTURE FILE($loc;$pic) col:=New collection(True;2323.434;2323;"hi") INSERT_READBACK_PICTURE_COL (->col;4;->$pic;".jpg")

The base64 text of the picture is inserted in the Collection:



Using the same method can read back the picture to a variable:

INSERT_READBACK_PICTURE_COL (->col;4;->picVariable)