In Visual Basic I have the following:
'===============================================
Dim theFrame As Varient
Dim dx as DocFile
Dim ex as New ExpSetup
Dim bRes as Integer
if (ex.Start(dx)) then
While ex.GetParam(EXP_RUNNING,bRes)
DoEvents 'Wait for detector to finish
Wend
dx.GetFrame 1, theFrame 'Retreive one image
end if
'===============================================
In Python I have the equivalent:
from PrincetonInst import * # Get the renamed Makepy file for the
# COM object
theFrame = [] # Set up the Varient
dx = DocFile() # Get the DocFile class
ex = win32com.client.Dispatch(ExpSetup.CLSID)
bRes = 0
if (ex.Start(dx)) then # Start detector scanning for data
While ex.GetParam(EXP_RUNNING,bRes): # Detector is scanning
## DoEvents # Wait for detector to finish, This has no
# equivalent in Pythonwin
s = 1 # This gives the while loop something to do
#### This is where everything falls apart
#### theFrame is not the correct datatype
dx.GetFrame(1,theFrame) # Retreive one image
How do I define the correct Varient type in Python?
Sam Schulenburg
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