Installing Agilent VEE will allow the installation of an ActiveX automation server that can be used to run UserFunction from environments other than the VEE development environment, such as ATEasy and Visual Studio. An ATEasy driver (VEE.drv) has been created as a wrapper providing an interoperability tool that can perform the majority of the overhead associated with starting and communicating with the VEE Run-time. This allows you to reuse existing test application code in ATEasy projects with the addition of only a few lines of code.
Example VEE library
For example, we have “VEE_ATEasyExample.vee” which contains three UserFunctions:- AddTwo: Adds two numbers and outputs the sum (a+b=result)
- ExpTwo: Outputs the first input raised to the power of the second input (a^b=result)
- MultiplyTwo: Multiplies two numbers and outputs the product (a*b=result)
Image 1: VEE Project Navigator
Flow of data
To call a VEE function from ATEasy, you would implement the following prototype:
VEE Call (sLibFile, sUserFunction, inputs, outputs)
The sLibFile defines the .VEE file that contains the target UserFunction, sUserFunction specifies the VEE function that will be executed, and the inputs and outputs represent the input and output terminals as arrays of variants.
Image 2: Flow of data between ATEasy and VEE
Example Code
The following code will pass the integers 3 and 5 to the AddTwo function in the VEE_ATEasyExample.vee and should assign the value {8} back to the outputs variable.
sLibFile : String ! Contains the path to the VEE file
sUserFunction : String ! Contains the name of the VEE UserFunction
avrInputs : Variant[2] ! The input parameters, where 2 is the number of parameters passed to the VEE function
vrOutputs : Variant ! The returned output parameters array stored to a variant
sLibFile=GetDir(0)+"\\VEE_ATEasyExample.vee" ! vee in current directory
sUserFunction="AddTwo" ! VEE function name
avrInputs={3,5} ! input parameters
VEE Call(sLibFile, sUserFunction, aVarInputs, vrOutputs)
TestResult=vrOutputs[0] ! store returned value
ATEasy Project and Example
ATEasy and VEE Example