HOWTO: Get Tooltips to Appear when Code in MouseMove

• Microsoft Visual FoxPro for Windows, versions 5.0, 5.0a

SUMMARY

This article shows how to get ToolTipText to appear if there is code in the MouseMove method.

MORE INFORMATION

In Visual FoxPro, command buttons and other objects on a form can have ToolTips displayed when the mouse pointer is placed over the object. If there is code in the MouseMove method of the object, the ToolTipText only shows very briefly, if at all, not allowing the ToolTip to be read.

To get the ToolTipText to display normally, issue the NODEFAULT keyword in the MouseMove method of the object whose ToolTip is not displaying properly.

Below is some sample code that creates a form with five command buttons. Place the code in a new program file and run it. When the mouse pointer is placed over a command button, the text on it turns red and the button receives focus. The text on the other command buttons is set back to black. Each command button also has text in the ToolTipText property.

Note that in the code below, the NODEFAULT keyword is commented out in the MouseMove method for command buttons Command1 and Command2. Uncomment the NODEFAULT keyword to have these two command buttons display their ToolTips like the other command buttons:

   PUBLIC oform1

   oform1=CREATEOBJECT("form1")
   oform1.Show
   RETURN

   **************************************************
   *-- Form:         form1
   *-- ParentClass:  form
   *-- BaseClass:    form
   *
   DEFINE CLASS form1 AS form

      Top = 32
      Left = 54
      Height = 283
      Width = 468
      DoCreate = .T.
      ShowTips = .T.
      Caption = "ToolTip Form"
      Name = "Form1"

      ADD OBJECT command1 AS commandbutton WITH ;
         Top = 72, ;
         Left = 24, ;
         Height = 27, ;
         Width = 84, ;
         Caption = "Command1", ;
         ToolTipText = "This is Command 1", ;
         Name = "Command1"

      ADD OBJECT command2 AS commandbutton WITH ;
         Top = 132, ;
         Left = 24, ;
         Height = 27, ;
         Width = 84, ;
         Caption = "Command2", ;
         ToolTipText = "Hello", ;
         Name = "Command2"

      ADD OBJECT command3 AS commandbutton WITH ;
         Top = 204, ;
         Left = 24, ;
         Height = 27, ;
         Width = 84, ;
         Caption = "Command3", ;
         ToolTipText = "This is Command3", ;
         Name = "Command3"

      ADD OBJECT command4 AS commandbutton WITH ;
         Top = 72, ;
         Left = 216, ;
         Height = 27, ;
         Width = 84, ;
         Caption = "Command4", ;
         ToolTipText = "Goodbye", ;
         Name = "Command4"

      ADD OBJECT command5 AS commandbutton WITH ;
         Top = 132, ;
         Left = 216, ;
         Height = 27, ;
         Width = 84, ;
         Caption = "Command5", ;
         ToolTipText = "This is Command 5", ;
         Name = "Command5"

      PROCEDURE blackbuts
         Thisform.SetAll("ForeColor",RGB(0,0,0),"CommandButton")
      ENDPROC

      PROCEDURE command1.MouseMove
         LPARAMETERS nButton, nShift, nXCoord, nYCoord
         *NODEFAULT
         Thisform.BlackButs()
         This.ForeColor=RGB(255,0,0)
         This.SetFocus()
         Thisform.Refresh()
      ENDPROC

      PROCEDURE command2.MouseMove
         LPARAMETERS nButton, nShift, nXCoord, nYCoord
         *NODEFAULT
         Thisform.BlackButs()
         This.ForeColor=RGB(255,0,0)
         This.SetFocus()
      ENDPROC

      PROCEDURE command3.MouseMove
         LPARAMETERS nButton, nShift, nXCoord, nYCoord
         NODEFAULT
         Thisform.BlackButs()
         This.ForeColor=RGB(255,0,0)
         This.SetFocus()
      ENDPROC

      PROCEDURE command4.MouseMove
         LPARAMETERS nButton, nShift, nXCoord, nYCoord
         NODEFAULT
         Thisform.BlackButs()
         This.ForeColor=RGB(255,0,0)
         This.SetFocus()
         Thisform.Refresh()
      ENDPROC

      PROCEDURE command5.MouseMove
         LPARAMETERS nButton, nShift, nXCoord, nYCoord
         NODEFAULT
         Thisform.BlackButs()
         This.ForeColor=RGB(255,0,0)
         This.SetFocus()
         Thisform.Refresh()
      ENDPROC

   ENDDEFINE
   *
   *-- EndDefine: form1
   ************************************************** 

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Issue type : kbhowto