Some of the methods in QTP

Working with API functions in QTP

• Extern object – It enables us to declare calls to external procedures from an external dynamic-link library (DLL).
• Declare Method - Declares references to external procedures in a dynamic-link library (DLL).
  Once we use the Declare method for a method, we can use the Extern object to call the declared method

  Syntax
  Extern.Declare(RetType, MethodName, LibName, Alias [, ArgType(s)])

  Argument	Type	Description
  RetType	String	Data type of the value returned by the method.
  MethodName	String	Any valid procedure name.
  LibName	String	Name of the DLL or code resource that contains the declared procedure.
  Alias	String	Name of the procedure in the DLL or code resource.
  ArgType	String	A list of data types representing the data types of the arguments that are passed to the procedure when it is called.

  Example
  'Declare FindWindow method
  Extern.Declare micHwnd, "FindWindow", "user32.dll", "FindWindowA", micString, micString
  'Declare SetWindowText method
  Extern.Declare micLong, "SetWindowText", "user32.dll", "SetWindowTextA", micHwnd, micString
  'Get HWND of the Notepad window
  hwnd = Extern.FindWindow("Notepad", vbNullString)
  if hwnd = 0 then
  MsgBox "Notepad window not found"
  end if
  'Change the title of the notepad window
  res = Extern.SetWindowText(hwnd, "qat")
  
  
  RegisterUserFunc utility in QTP

• Enables us to add new methods to test objects or change the behavior of an existing test object method during a run session
• When we use this statement, QuickTest uses our user-defined function as a method of a specified test object class for the remainder of a run session, or until we unregister the method.

  Syntax
  RegisterUserFunc TOClass, MethodName, FunctionName, SetAsDefault

  Argument	Type	Description
  TOClass	String	The test object class for which you want to register the method.
  MethodName	String	The method you want to register.
  FunctionName	String	The name of your user-defined function. The function can be located in your action or in any library file associated with your test or component.
  SetAsDefault	Boolean	Indicates whether the registered function is used as the default method for the test object.

  Example
  The following example uses the RegisterUserFunc method to create a new Copy method for the WinEdit test object that copies all the text in an edit box to the Windows Clipboard.
  Sub Copy (edit)
         Edit.Click 3, 3
         Edit.SetSelection 0, Len(Edit.GetROProperty("text"))
         Edit.Type micCtrlDwn + "c" + micCtrlUp
  End Sub

  RegisterUserFunc "WinEdit", "Copy", "Copy"
  ' Now you can call the new method
  Dialog("Login").WinEdit("Agent Name:").Copy