Get layer of shape in Visio in Python

Question

I'm trying to select all shapes within an existing Visio-file that are i. e. in layer "help" to delete them. Is there a way to achive that using python package "vsdx"?

Answer 1

You can use CreateSelection method with parameter visSelTypeByLayer = 3.

Right now I haven't Python environment there, my simple VBA code

Sub SOF_77409035()
Dim Sh As Shape
Dim sl As Selection
ActiveWindow.DeselectAll ' deselect all   
Set sl = ActivePage.CreateSelection(3, 0, "help") ' create selection in memory    
For Each Sh In sl ' iterate all shapes in selection    
'    ActiveWindow.Select Sh, 2 ' select shape visSelect = 2    
     sh.delete    
Next    
End Sub   

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UPDATE This python-code can print a list of shapes belonging to a layer.
But it cannot select these shapes.

import win32com.client as w32 
visio = w32.Dispatch("visio.Application") 
visio.Visible = 1 
win = visio.activewindow
doc = visio.activedocument
pag = doc.pages(1)
sl = pag.createselection(3, 0,"help")
for i in range (1, sl.count+1):
    sh = sl.item(i)
    sh.delete 

PS vsdx python package have poor documentation, I suspect that's not possible.