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Sets alpha for drawings.

Component Version macOS Windows Linux Server iOS SDK
DynaPDF 3.1 ✅ Yes ✅ Yes ✅ Yes ✅ Yes ✅ Yes
MBS( "DynaPDF.SetAlpha"; PDF; FillAlpha; StrokeAlpha )   More


Parameter Description Example
PDF The PDF reference returned from DynaPDF.New. $pdf
FillAlpha The new alpha between 0.0 and 1.0. Value of -1 will not change fill alpha. 0.5
StrokeAlpha The new alpha between 0.0 and 1.0. Value of -1 will not change stroke alpha. 0.5


Returns OK or error message.


Sets alpha for drawings.
See also DynaPDF.SaveGraphicState and DynaPDF.RestoreGraphicState.

Requires DynaPDF Lite license.

See also SetAlpha function in DynaPDF manual.


Make all drawings 50% transparent:

MBS( "DynaPDF.SetAlpha"; $PDF; 0.5; 0.5 )

Make just lines 50% transparent and don't change fill transparency:

MBS( "DynaPDF.SetAlpha"; $PDF; -1; 0.5 )

Make fill transparency 50%, so images draw half transparent:

MBS( "DynaPDF.SetAlpha"; $PDF; 0.5; -1 )

See also

Example Databases

This function checks for a license.

Created 18th August 2014, last changed 27th July 2018

DynaPDF.ScaleCoords - DynaPDF.SetAltFonts