How to Determine the Coordinates of an Object (136328)

MORE INFORMATION

Step-by-Step Example

You can use the Top, Left, Height, and Width properties to determine the exact area occupied by an object. Then position the mouse pointer in that area, and fire the object's Click event. The following procedure gives an example.

1. Create a new form.
2. Place a command button (Command1) on the form.
3. Place the following five lines of code in the Debug window:

      _SCREEN.ActiveForm.Command1.Top
      _SCREEN.ActiveForm.Command1.Left
      _SCREEN.ActiveForm.Command1.Height
      _SCREEN.ActiveForm.Command1.Width
      _SCREEN.ActiveForm.Command1.ScaleMode
   						

   These commands return numeric values indicating the coordinates of the Command1 button relative to the form on which it is located. The Top property indicates the distance between the top edge of the control and the top edge of its parent object. (For form objects, Top give the distance between the top edge of the form and the main Visual FoxPro window.)
   
   The Left property indicates the left-most edge of an object relative to its parent object. (For form objects, Left gives the distance between the left edge of the form and the main Visual FoxPro window.)
   
   The Height property indicates the height of the object on the screen.
   
   The Width property indicates the width of the object.
   
   The ScaleMode property indicates the unit of measurement for coordinates of an object when using graphics methods or when positioning controls. The two measurements Visual FoxPro uses are pixels and foxels. The ScaleMode property uses foxels if set to 0 and pixels if set to 3.
4. Run the form, and make a note of the values returned in the Debug window. Knowing what these values represent, you can simulate clicking the Command1 button on this form by using this code:

      tRow = _screen.activeform.command1.top
      tCol = _screen.activeform.command1.left
      MOUSE CLICK AT tRow, tCol PIXELS WINDOW (_SCREEN.ACTIVEFORM.Name)
   						

NOTE: This code fires the Command1 Click event. For more information on the syntax of the MOUSE CLICK command, please see the MOUSE Command topic in the Help file.