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Automating a smooth drag and drop action

Automating a smooth drag and drop action

In some instances an application may require that a smooth drag and drop action be performed to allow events such as  "mouse leave" to fire successfully within the application under test. Generally when using Silk Test, a drag and drop action is perform in the following way:


When using the above approach, the "ReleaseMouse" action may potentially prevent events such as "mouse leave" from firing successfully within the application under test. This is caused as the mouse pointer is directly transported to a particular coordinate on screen, rather than being moved in a user like fashion to the desired location. In instances such as these we must create a user defined function to perform a "smooth" drag and drop action.

The example below highlights how this can be achieved in Silk Test Classic:

[-] void SmoothDrag_n_Drop(window wToBeDragged, window wDragTo)
     [ ] RECT rDragToPos = wDragTo.GetRect(TRUE)
     [ ]
     [ ] int iXPos = rDragToPos.xPos + (rDragToPos.xSize/2)
     [ ] int iYPos = rDragToPos.yPos + (rDragToPos.ySize/2)
     [ ]
     [ ] wToBeDragged.PressMouse(1)
     [ ]
     [ ] int iCurXPos = Cursor.GetPosition().x
     [ ] int iCurYPos = Cursor.GetPosition().y
     [ ]
     [-] while(iCurXPos != iXPos || iCurYPos != iYPos)
          [ ]
          [-] if(iXPos > iCurXPos)
               [ ] iCurXPos++
          [-] else
               [-] if(iXPos < iCurXPos)
                    [ ] iCurXPos--
          [ ]
          [-] if(iYPos > iCurYPos)
               [ ] iCurYPos++
          [-] else
               [-] if(iYPos < iCurYPos)
                    [ ] iCurYPos--
          [ ]
          [ ] Desktop.MoveMouse(iCurXPos, iCurYPos)
     [ ]
     [ ] Desktop.ReleaseMouse(1, iCurXPos, iCurYPos)

In the above example function, the window wToBeDragged is dragged incrementally to the centre of wDragTo, which successfully allows the application to invoke/fire mouse events such as "mouse leave".



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