[Gambas-user] Drawing Area Location in Screenshot Depends on Window Location on Desktop

[Louis W. Adams, Jr.]

I have a drawing area control daChart on a form.  To extract an image of that
control area using screenshot, I expected that the following would work,
where picSave is a Picture object.  The number 28 accounts for the window
control frame at the top for my screen resolution in Ubuntu (1920x1080).

picSave = Desktop.Screenshot()

With daChart
    picSave = picSave.Copy(Me.Left + .X, Me.Top + .Y + 28, .Width, .Height)
End With

Instead I must do what follows.

picSave = Desktop.Screenshot()

With daChart
    If (Me.Left > 0) Then
        picSave = picSave.Copy(Me.Left + 2 * .X, Me.Top + 2 * .Y + 28,
.Width, .Height)
    Else
        picSave = picSave.Copy(Me.Left + .X + 1, Me.Top + .Y + 28, .Width,
.Height)
    Endif
End With

In other words, if the form is not at the left edge of the desktop then I
must double the drawing area control coordinates.  I see nothing wrong with
coordinate values of the form or the control as reported by the debugger,
and Screenshot() is unaffected by form location on the desktop, so the
problem might be in the Copy method.

Here are my system particulars.

[System]
    Gambas=3.5.2
    OperatingSystem=Linux
    Kernel=3.11.0-15-generic
    Architecture=x86_64
    Distribution=Ubuntu 13.10
    Desktop=GNOME
    Theme=QGtk
    Language=en_US.UTF-8
    Memory=32135M
[Libraries]
    Cairo=libcairo.so.2.11200.16
    Curl=libcurl.so.4.3.0
    DBus=libdbus-1.so.3.7.4
    GStreamer=libgstreamer-0.10.so.0.30.0
    GStreamer=libgstreamer-1.0.so.0.200.0
    GTK+=libgtk-x11-2.0.so.0.2400.20
    OpenGL=libGL.so.1.2.0
    Poppler=libpoppler.so.43.0.0
    Qt4=libQtCore.so.4.8.4
    SDL=libSDL-1.2.so.0.11.4

Lou



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