Condividi tramite


Shape Control Properties, Methods and Events

Properties

Application BackColor BackStyle
BaseClass BorderColor BorderStyle
BorderWidth Class ClassLibrary
ColorScheme ColorSource Comment
Curvature DragIcon DragMode
DrawMode Enabled FillColor
FillStyle Height HelpContextID
Left MouseIcon MousePointer
Name OLEDragMode OLEDragPicture
OLEDropEffects OLEDropHasData Property OLEDropMode
Parent ParentClass SpecialEffect
Tag ToolTipText Top
Visible WhatsThisHelpID Width

Events

Click DblClick Destroy
DragDrop DragOver Error
Init MiddleClick Event MouseDown
MouseEnter MouseLeave MouseMove
MouseUp MouseWheel OLECompleteDrag
OLEDragDrop OLEDragOver OLEGiveFeedBack
OLESetData OLEStartDrag RightClick
UIEnable    

Methods

AddProperty CloneObject Drag
Move OLEDrag ReadExpression
ReadMethod ResetToDefault SaveAsClass
ShowWhatsThis WriteExpression WriteMethod
ZOrder    

Example

The following example demonstrates how the Shape control can be used to display a circle, ellipse, or square on a form.

A form is created, and a set of option buttons and a command button are placed on the form. When you click one of the option buttons, the corresponding shape is displayed on the form. The Visible property is set to true (.T.) to display a shape; it is set to false (.F.) to hide the shape before another shape is displayed. The Height, Width, and Curvature properties of each shape determine the type of shape (circle, ellipse, or square) created.

frmMyForm = CREATEOBJECT('Form')  && Create a Form
frmMyForm.Closable = .F.  && Disable the Control menu box 

frmMyForm.AddObject('cmdCommand1','cmdMyCmndBtn')  && Add Command button
frmMyForm.AddObject('opgOptionGroup1','opgMyOptGrp') && Add Option Group
frmMyForm.AddObject('shpCircle1','shpMyCircle')  && Add Circle Shape
frmMyForm.AddObject('shpEllipse1','shpMyEllipse')  && Add Ellipse Shape
frmMyForm.AddObject('shpSquare','shpMySquare')  && Add Box Shape

frmMyForm.cmdCommand1.Visible =.T.  && "Quit" Command button visible

frmMyForm.opgOptionGroup1.Buttons(1).Caption = "\<Circle"
frmMyForm.opgOptionGroup1.Buttons(2).Caption = "\<Ellipse"
frmMyForm.opgOptionGroup1.Buttons(3).Caption = "\<Square"
frmMyForm.opgOptionGroup1.SetAll("Width", 100) && Set Option group width
frmMyForm.opgOptionGroup1.Visible = .T.  && Option Group visible
frmMyForm.opgOptionGroup1.Click  && Show the circle

frmMyForm.SHOW  && Display the form
READ EVENTS  && Start event processing

DEFINE CLASS opgMyOptGrp AS OptionGroup  && Create an Option Group
   ButtonCount = 3  && Three Option buttons
   Top = 10
   Left = 10
   Height = 75
   Width = 100

   PROCEDURE Click 
      ThisForm.shpCircle1.Visible = .F.  && Hide the circle
      ThisForm.shpEllipse1.Visible = .F.  && Hide the ellipse
      ThisForm.shpSquare.Visible = .F.  && Hide the square
      
      DO CASE
         CASE ThisForm.opgOptionGroup1.Value = 1
            ThisForm.shpCircle1.Visible = .T. && Show the circle
         CASE ThisForm.opgOptionGroup1.Value = 2 
            ThisForm.shpEllipse1.Visible = .T.  && Show the ellipse
         CASE ThisForm.opgOptionGroup1.Value = 3 
            ThisForm.shpSquare.Visible = .T.  && Show the square
      ENDCASE
ENDDEFINE

DEFINE CLASS cmdMyCmndBtn 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 = 210  && Command button row
   Height = 25  && Command button height

   PROCEDURE Click
      CLEAR EVENTS  && Stop event processing, close Form
ENDDEFINE

DEFINE CLASS shpMyCircle AS Shape  && Create a circle
   Top = 10
   Left = 200
   Width = 100
   Height = 100
   Curvature = 99
   BackColor = RGB(255,0,0)  && Red
ENDDEFINE

DEFINE CLASS shpMyEllipse AS Shape  && Create an ellipse
   Top = 35
   Left = 200
   Width = 100
   Height = 50
   Curvature = 99
   BackColor = RGB(0,128,0)  && Green
ENDDEFINE

DEFINE CLASS shpMySquare AS Shape  && Create a square
   Top = 10
   Left = 200
   Width = 100
   Height = 100
   Curvature = 0
   BackColor = RGB(0,0,255)  && Blue
ENDDEFINE

See Also

Shape Control | CREATE CLASS | CREATE FORM | DEFINE CLASS