Specifies the distance between the top edge of a control or form and its container object. Available at design time and run time.
Object.Top[ = nValue] |
Return Value
- nValue
- Specifies the distance between the top edge of an object or form and the top edge of its container object. The default container for a form is the main Visual FoxPro window.
Remarks
Applies To: CheckBox | ComboBox | CommandButton | CommandGroup | Container Object | Control Object | Custom | EditBox | Form | Grid | Image | Label | Line | ListBox | OLE Bound Control | OLE Container Control | OptionButton | OptionGroup | PageFrame | _SCREEN | Shape | Spinner | TextBox | Timer | ToolBar
The Top property specifies how far from the object's zero position the object is located. For example, if a form is contained within the Visual FoxPro main window, the zero position is immediately below the system menu, or if a toolbar is docked to the top of the main window, immediately below the toolbar.
Use the Left and Top and the Height and Width properties for operations based on an object's external dimensions, such as moving or resizing.
Note: |
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The Top property is read-only when it applies to a control contained in a Column object. |
The unit of measurement used by the Top property is determined by the control's ScaleMode property setting.
Example
The following example demonstrates how the Top property is used to position controls on a form. The AddObject method is used to add a Line control and three command buttons to a form. The Top property specifies the vertical placement of each control on the form.
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frmMyForm = CREATEOBJECT('Form') && Create a Form frmMyForm.Closable = .F. && Disable the window pop-up menu frmMyForm.AddObject('shpLine','Line') && Add a Line control to the form frmMyForm.AddObject('cmdCmndBtn1','cmdMyCmndBtn1') && Up Cmnd button frmMyForm.AddObject('cmdCmndBtn2','cmdMyCmndBtn2') && Down Cmnd button frmMyForm.AddObject('cmdCmndBtn3','cmdMyCmndBtn3') && Quit Cmnd button frmMyForm.shpLine.Visible = .T. && Make Line control visible frmMyForm.shpLine.Top = 20 && Specify Line control row frmMyForm.shpLine.Left = 125 && Specify Line control column frmMyForm.cmdCmndBtn1.Visible =.T. && Up Command button visible frmMyForm.cmdCmndBtn2.Visible =.T. && Down Command button visible frmMyForm.cmdCmndBtn3.Visible =.T. && Quit Command button visible frmMyForm.SHOW && Display the form READ EVENTS && Start event processing DEFINE CLASS cmdMyCmndBtn1 AS COMMANDBUTTON && Create Command button Caption = 'Slant \<Up' && Caption on the Command button Left = 50 && Command button column Top = 100 && Command button row Height = 25 && Command button height PROCEDURE Click ThisForm.shpLine.Visible = .F. && Hide the Line control ThisForm.shpLine.LineSlant ='/' && Slant up ThisForm.shpLine.Visible = .T. && Show the Line control ENDDEFINE DEFINE CLASS cmdMyCmndBtn2 AS CommandButton && Create Command button Caption = 'Slant \<Down' && Caption on the Command button Left = 200 && Command button column Top = 100 && Command button row Height = 25 && Command button height PROCEDURE Click ThisForm.shpLine.Visible = .F. && Hide the Line control ThisForm.shpLine.LineSlant ='\' && Slant down ThisForm.shpLine.Visible = .T. && Show the Line control ENDDEFINE DEFINE CLASS cmdMyCmndBtn3 AS CommandButton && Create Command button Caption = '\<Quit' && Caption on the Command button Cancel = .T. && Default Cancel Command button (Esc) Left = 125 && Command button column Top = 150 && Command button row Height = 25 && Command button height PROCEDURE Click CLEAR EVENTS && Stop event processing, close Form ENDDEFINE |