PRB: Very Wide Editboxes Do Not Display Data

• Microsoft Visual FoxPro for Windows, version 6.0

SYMPTOMS

Data is not showing in editbox controls that are very wide and one line of text tall.

CAUSE

When the Width property of an editbox control exceeds approximately 32,750 pixels, the data starts to shift to the right from the left edge of the editbox. At some point, it shifts far enough to the right so that it is no longer visible in the editbox. This happens when the editbox is tall enough to display only one line of text. When the height is increased enough, the data then appears. The different FontNames, FontStyles and especially FontSizes can also make a difference as to where this problem starts.

RESOLUTION

Do not make the editbox wider than about 32,750 pixels unless the height is such that more than one line will display.

MORE INFORMATION

You can run the following code to create a form that illustrates the problem. The form has spinner controls to change the Width and Height properties of an editbox. The Value property of the editbox is initially set to "Hello There" in the code.

Steps to Reproduce Behavior

1. Copy the following code into a new program file and save it.

   
   PUBLIC oform1
   
   oform1=NEWOBJECT("form1")
   oform1.Show
   RETURN
   
   
   	**************************************************
   DEFINE CLASS form1 AS form
   
   
   	Top = 0
   	Left = 0
   	Height = 293
   	Width = 417
   	DoCreate = .T.
   	Caption = "Form1"
   	Name = "Form1"
   
   
   	ADD OBJECT command1 AS commandbutton WITH ;
   		Top = 72, ;
   		Left = 25, ;
   		Height = 37, ;
   		Width = 312, ;
   		Caption = "What's In The Editbox?", ;
   		Name = "Command1"
   
   
   	ADD OBJECT command2 AS commandbutton WITH ;
   		Top = 132, ;
   		Left = 24, ;
   		Height = 25, ;
   		Width = 313, ;
   		Caption = "Change the Editbox's Width to 32500 or back to 35000", ;
   		Name = "Command2"
   
   
   	ADD OBJECT edit1 AS editbox WITH ;
   		FontSize = 9, ;
   		Height = 23, ;
   		Left = 12, ;
   		Top = 12, ;
   		Width = 35000, ;
   		Value = "Hello There", ;
   		Name = "Edit1"
   
   
   	ADD OBJECT spinner1 AS spinner WITH ;
   		Height = 25, ;
   		InputMask = "999,999", ;
   		KeyboardHighValue = 100000, ;
   		KeyboardLowValue = 32500, ;
   		Left = 72, ;
   		SpinnerHighValue = 100000.00, ;
   		SpinnerLowValue = 32500.00, ;
   		Top = 225, ;
   		Width = 85, ;
   		Value = 35000, ;
   		Name = "Spinner1"
   
   
   	ADD OBJECT label1 AS label WITH ;
   		Caption = "Edit Width", ;
   		Height = 18, ;
   		Left = 10, ;
   		Top = 232, ;
   		Width = 58, ;
   		Name = "Label1"
   
   
   	ADD OBJECT label2 AS label WITH ;
   		Caption = "Edit Height", ;
   		Height = 17, ;
   		Left = 4, ;
   		Top = 271, ;
   		Width = 64, ;
   		Name = "Label2"
   
   
   	ADD OBJECT spinner2 AS spinner WITH ;
   		Height = 25, ;
   		InputMask = "999,999", ;
   		KeyboardHighValue = 500, ;
   		KeyboardLowValue = 20, ;
   		Left = 72, ;
   		SpinnerHighValue = 500.00, ;
   		SpinnerLowValue =  20.00, ;
   		Top = 263, ;
   		Width = 85, ;
   		Value = 23, ;
   		Name = "Spinner2"
   
   
   	ADD OBJECT command3 AS commandbutton WITH ;
   		Top = 168, ;
   		Left = 168, ;
   		Height = 25, ;
   		Width = 169, ;
   		Caption = "Reset Editbox's Height to 23", ;
   		Name = "Command3"
   
   
   	PROCEDURE command1.Click
   		=Messagebox("The Value property of the editbox is: " ;
   		   + ThisForm.Edit1.Value)
   	ENDPROC
   
   
   	PROCEDURE command2.Click
   		IF ThisForm.Edit1.Width = 35000
   			ThisForm.Edit1.Width = 32500
   		ELSE
   			ThisForm.Edit1.Width = 35000
   		ENDIF
   		Thisform.Spinner1.Value = Thisform.Edit1.Width
   		ThisForm.Edit1.Refresh
   	ENDPROC
   
   
   	PROCEDURE spinner1.InteractiveChange
   		Thisform.Edit1.Width=This.Value
   		Thisform.Refresh
   	ENDPROC
   
   
   	PROCEDURE spinner2.InteractiveChange
   		Thisform.Edit1.Height=This.Value
   		Thisform.Refresh
   	ENDPROC
   
   
   	PROCEDURE command3.Click
   		Thisform.Edit1.Height = 23
   		Thisform.Spinner2.Value = Thisform.Edit1.Height
   		Thisform.Refresh
   	ENDPROC
   
   
   ENDDEFINE
   *
   *-- EndDefine: form1
   **************************************************
    




2. Run the program.



3. Click the What's in the Editbox? button. This opens a Message Box that reports Hello There.



4. Click the Change the Editbox's Width to 32500 or back to 35000 button. Watch Hello There appear and disappear when repeatedly clicking the button. The Edit Width spinner below shows to what Width the editbox is currently set.



5. When the Edit Width spinner is set to 32,500, spin it up to 32,758 and beyond and watch the Hello There text move to the right in the editbox.



6. When Hello There is about half way in the visible portion of the editbox, spin the Edit Height up to 38 and watch the Hello There text move back to the left side of the edit box.

Additional query words: kbDSE

Keywords : kbContainer kbCtrl kbOOP kbVFp600 kbGrpFox
Version : WINDOWS:6.0
Platform : WINDOWS
Issue type : kbprb