El 24/6/22 a les 9:48, Luca Olivetti via lazarus ha escrit:
El 24/6/22 a les 0:19, Mattias Gaertner via lazarus ha escrit:
but why did it find the class for writing and not for reading it back?
Also, once solved that, if it streams it using a class provided by a
package, shouldn't the project have a dependency automatically added
on that package?
Both should read+write valid png files, otherwise there is a bug.
I was stepping though the method TPicture.ReadData(Stream: TStream) and
I saw that GraphicClassName was "TImagingPNG" but the line
GraphicClass := GetPicFileFormats.FindClassName(GraphicClassName)
returned nil
I'm puzzled: now I removed the vampyre lib from the ide, in a form I
need ImagingComponent and ImagingClassed.
I drop a TPicture with a png image and it is blank at runtime.
This time it is streamed as TPortableNetworkGraphic *but* FindClassName
cannot find it.
How is that possible?
Bye
--
Luca Olivetti
Wetron Automation Technology http://www.wetron.es/
Tel. +34 93 5883004 (Ext.3010) Fax +34 93 5883007
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