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MemorySize is not allowed, then...
Can I use CopyMemory on/from DrawingBuffer, to make independent copy? Sometimes it is work - sometimes I get "Invalid memory access" error....
I am trying to find images that might be causing the error.

Image DrawingBuffer has different size on GTK2 and QT subsystems
Expected = 36
RealSize = 65 (GTK2)
RealSize = 48 (QT)
RealSize = 49 (Empty)
Also get "*ImageData is not Valid" error on Windows (MemorySize(*ImageData) line)

UsePNGImageDecoder()
Define *FileImage = LoadImage(#PB_Any ...

Different behavior on QT and GTK2 subsystem, like GTK2 makes Round for coords on line 6-7

#X = 0.999999

Define *Image = CreateImage(#PB_Any, 3, 3)

StartVectorDrawing(ImageVectorOutput(*Image))
MovePathCursor(#X, 0)
AddPathLine(#X, 3)
VectorSourceColor($FFFFFFFF)
StrokePath(1)
StopVectorDrawing ...