Error reading address when debugging delphivcl library.

[fansxs]

When debugging using the Delphivcl library, stop in the click event of the control, then switch to the variables panel, click on the globals node, and a read address error will pop up, as shown in the figure. But debugging non delphivcl py files is normal.

[pyscripter]

What is PythonStudio.exe?
Could you please post a minimal sample script to replicate the error?

[fansxs]

The version is 4.3.4.0 x64. Here is the example code, thanks :)

from delphivcl import *

class MainForm(Form):

def __init__(self, owner):
    self.Caption = "A VCL Form..."
    self.SetBounds(10, 10, 500, 400)
    self.Position = "poScreenCenter"

    self.lblHello = Label(self)   # For example, breakpoints here, Then click on globals in the variable panel
    self.lblHello.SetProps(Parent=self,
        Caption="Hello DelphiVCL for Python", Color=clRed)
    self.lblHello.SetBounds(10, 10, 300, 24)

def main():
Application.Initialize()
Application.Title = "Hello Python"
Main = MainForm(Application)
Main.Show()
FreeConsole()
Application.Run()
Main.Destroy()

main()

[limelect]

this is your source
it runs ok

[pyscripter]

This is a delphivcl issue. See Embarcadero/DelphiVCL4Python#84.

Hopefully this will be fixed in the next release.

[pyscripter]

In version 1.05 the culprit is Screen.Realign

Run the following script:

from delphivcl import Screen
print(Screen.Realign.__doc__)

Output:

Traceback (most recent call last):
  File "<module1>", line 2, in <module>
UnicodeDecodeError: 'utf-8' codec can't decode byte 0x92 in position 37: invalid start byte

Workaround:

from delphivcl import *
del(Screen)