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GMImage.Read

Read single image frame into current object.

Component Version macOS Windows Linux Server iOS SDK
GraphicsMagick 8.3 ✅ Yes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
MBS( "GMImage.Read"; ImageRef; Spec { ; Geometry } )   More

Parameters

Parameter Description Example Flags
ImageRef The image reference number. 1
Spec The image specification.
e.g. native file path
Geometry The image size.
Geometry is specified as a width and height "100x200". With an optional offset "100x200+10+20". For percent values, add a percent on the end, for % values add a %: "100x200%!"		 "100x200" Optional

Result

Returns OK or error.

Description

Read single image frame into current object.
This allows you to directly specify the coders to use and include options.

e.g. gradient coder takes a range of two colors to create gradient.

This function requires a native path. Use Path.FileMakerPathToNativePath to convert a FileMaker path to a native path if required. If you like to have the user choose the path, you can use FileDialog functions.
For Server be aware that server has limited permissions and may not be able to access all files on a computer.

Examples

Reads in a gradient image:

Set Variable [ $image ; Value: MBS( "GMImage.New"; "200x200"; "white" ) ]
Set Variable [ $r ; Value: MBS( "GMImage.Read"; $image; "gradient:#20a0ff-#ffff00;" ) ]
// Set Variable [ $r ; Value: MBS( "GMImage.Read"; $image; "gradient:white-black" ) ]
Set Field [ Contacts::Photo Container ; MBS( "GMImage.WriteToPNGContainer"; $image; "gradient.png") ]
Set Variable [ $r ; Value: MBS( "GMImage.Release"; $image) ]

See also

Release notes

Blog Entries

This function checks for a license.

Created 25th May 2018, last changed 15th July 2020


GMImage.RandomThresholdChannel - GMImage.ReadContainer