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GMImage.PingContainer

Pings an image to query metadata.

Component Version macOS Windows Server FileMaker Cloud FileMaker iOS SDK
GMImage 10.3 Yes Yes Yes Yes Yes
MBS( "GMImage.PingContainer"; ImageRef; data )   More

Parameters

Parameter Description Example value
ImageRef The image reference number. 1
data The container value, either a variable or a container field.

Result

Returns OK or error.

Description

Pings an image to query metadata.
Ping is similar to read except only enough of the image is read to determine the image columns, rows, and file size.

See GMImage.GetWidth, GMImage.GetHeight and GMImage.GetXMP.

Examples

Ping container to query size:

# you have some dummy image already
Set Variable [ $img ; Value: MBS( "GMImage.New"; "10x10"; "white" ) ]
# read new picture into it
Set Variable [ $r ; Value: MBS( "GMImage.SetMagick"; $img; "png") ]
Set Variable [ $r ; Value: MBS( "GMImage.PingContainer"; $img; Contacts::Photo Container) ]
If [ MBS("IsError") = 0 ]
    Set Variable [ $w ; Value: MBS( "GMImage.GetWidth"; $img ) ]
    Set Variable [ $h ; Value: MBS( "GMImage.GetHeight"; $img ) ]
    Show Custom Dialog [ "Size" ; $w & " x " & $h ]
Else
    Show Custom Dialog [ "Failed" ; $r ]
End If
Set Variable [ $r ; Value: MBS( "GMImage.Release"; $img) ]

See also

Blog Entries

Release notes

Created 14th July 2020, last changed 14th July 2020


GMImage.Ping   -   GMImage.PopClipPath

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