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GMImage.SetType
Sets the Image representation type.
| Component | Version | macOS | Windows | Linux | Server | iOS SDK |
| GraphicsMagick | 2.0 | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes | ✅ Yes |
MBS( "GMImage.SetType"; ImageRef; Type ) More
Parameters
| Parameter | Description | Example |
|---|---|---|
| ImageRef | The image reference number. | 1 |
| Type | UndefinedType = 0, BilevelType = 1, GrayscaleType = 2, GrayscaleMatteType = 3, PaletteType = 4, PaletteMatteType = 5, TrueColorType = 6, TrueColorMatteType = 7, ColorSeparationType = 8, ColorSeparationMatteType = 9, OptimizeType = 10 | 6 |
Result
Returns "OK" on success.
Description
Sets the Image representation type.Changing the type from TrueColorType to GrayscaleType will convert a color picture to grayscale.
Examples
Change the picture to grayscale.
Let ( [
$Image = MBS("GMImage.NewFromContainer"; GraphicsMagick::image);
$Result = MBS("GMImage.SetType";$Image; 2);
$Result = MBS("GMImage.WriteToPNGContainer"; $Image);
$Error = MBS("GMImage.Release";$Image)
];
$Result)
$Image = MBS("GMImage.NewFromContainer"; GraphicsMagick::image);
$Result = MBS("GMImage.SetType";$Image; 2);
$Result = MBS("GMImage.WriteToPNGContainer"; $Image);
$Error = MBS("GMImage.Release";$Image)
];
$Result)
Convert image to 1 bit TIFF:
# Load from container
Set Variable [ $Image ; Value: MBS("GMImage.NewFromContainer"; GraphicsMagick::image); ]
# make black and white with threshold
Set Variable [ $Result ; Value: MBS("GMImage.Threshold";$Image; 127); ]
# mark as monochrome image
Set Variable [ $Result ; Value: MBS("GMImage.SetMonochrome";$Image; 1); ]
# set type to 1 for black/white
Set Variable [ $Result ; Value: MBS("GMImage.SetType";$Image; 1); ]
# set to use TIFF for compression
Set Variable [ $Result ; Value: MBS("GMImage.SetMagick";$Image; "TIFF"); ]
# set to use CCITT 4 Fax compression
Set Variable [ $Result ; Value: MBS("GMImage.SetCompressType";$Image; 4); ]
# and write to a file
Set Variable [ $Result ; Value: MBS("GMImage.WriteToFile"; $Image; "/tmp/test.tif"); ]
# cleanup
Set Variable [ $Error ; Value: MBS("GMImage.Release";$Image) ]
Set Variable [ $Image ; Value: MBS("GMImage.NewFromContainer"; GraphicsMagick::image); ]
# make black and white with threshold
Set Variable [ $Result ; Value: MBS("GMImage.Threshold";$Image; 127); ]
# mark as monochrome image
Set Variable [ $Result ; Value: MBS("GMImage.SetMonochrome";$Image; 1); ]
# set type to 1 for black/white
Set Variable [ $Result ; Value: MBS("GMImage.SetType";$Image; 1); ]
# set to use TIFF for compression
Set Variable [ $Result ; Value: MBS("GMImage.SetMagick";$Image; "TIFF"); ]
# set to use CCITT 4 Fax compression
Set Variable [ $Result ; Value: MBS("GMImage.SetCompressType";$Image; 4); ]
# and write to a file
Set Variable [ $Result ; Value: MBS("GMImage.WriteToFile"; $Image; "/tmp/test.tif"); ]
# cleanup
Set Variable [ $Error ; Value: MBS("GMImage.Release";$Image) ]
Change picture to RGB:
MBS("GMImage.SetType"; $image; 6);
Replace white with transparent:
Set Variable [$BigImageRef; Value:MBS("GMImage.NewFromContainer"; Test::BigImage)]
# Set type to RGBA
Set Variable [$Result; Value:MBS("GMImage.SetType"; $BigImageRef; 7)]
# Replace white with transparent
Set Variable [$Result; Value:MBS("GMImage.ReplaceColor"; $BigImageRef; "white"; "transparent"; 10)]
# save as PNG
Set Field [Test::Result; MBS( "GMImage.WriteToPNGContainer"; $BigImageRef )]
Set Variable [$Error; Value:MBS("GMImage.Release";$BigImageRef)]
# Set type to RGBA
Set Variable [$Result; Value:MBS("GMImage.SetType"; $BigImageRef; 7)]
# Replace white with transparent
Set Variable [$Result; Value:MBS("GMImage.ReplaceColor"; $BigImageRef; "white"; "transparent"; 10)]
# save as PNG
Set Field [Test::Result; MBS( "GMImage.WriteToPNGContainer"; $BigImageRef )]
Set Variable [$Error; Value:MBS("GMImage.Release";$BigImageRef)]
See also
- GMImage.SetFont
- GMImage.SetLabel
- GMImage.SetMonochrome
- GMImage.SetPage
- GMImage.SetScene
- GMImage.SetSize
- GMImage.SetView
- GMImage.SetXMP
- GMImage.WriteToFile
- GMImage.WriteToPNGContainer
Example Databases
- Barcode/Swiss QR-Code for invoices/Swiss QR-Code for invoices ISO 20022
- DynaPDF/Scan with WIA to PDF
- GraphicsMagick/Create GIF
- GraphicsMagick/GraphicsMagick Sample
- GraphicsMagick/Reduce Image
- GraphicsMagick/SVG to PNG
- Overlay
Blog Entries
- MBS Plugin Advent calendar: 16 - GraphicsMagick
- GraphicsMagick in FileMaker, part 23
- GraphicsMagick in FileMaker, part 9
- GraphicsMagick in FileMaker, part 8
- Convert a SVG image to PNG with alpha channel
- Create PDF from scanned images and skip blank pages
- QR Codes for Invoices in Switzerland
FileMaker Magazin
This function checks for a license.
Created 18th August 2014, last changed 25th February 2026
