Knowledge Base

PRB: Class Names in VFP 5.0 are Case Sensitive

Article ID: 161359

Article Last Modified on 12/3/2003


APPLIES TO


This article was previously published under Q161359

SYMPTOMS

When referencing an object class or base class for comparison, the class name is case sensitive.

When testing the class property of a command button and comparing the property setting to the string "commandbutton" rather than "Commandbutton," the code fails. The 'c' in Commandbutton must be capitalized.

RESOLUTION

The text used for comparison must match the property setting exactly.

STATUS

This behavior is by design.

MORE INFORMATION

Steps to Reproduce Behavior

  1. Create a form with a command button. The base class is Commandbutton and the class is Commandbutton.
  2. Place the following code in the Click event of a command button:
          i=1
          FOR i = 1 to ThisForm.ControlCount
             IF ThisForm.Controls(i).Class = "commandbutton" THEN
                WAIT WINDOW ThisForm.Controls(i).Name
             ELSE
                WAIT WINDOW "This is not a Command Button:  "  + ;
                             ThisForm.Controls(i).Name
             ENDIF
          NEXT i
    						
The code above returns a Wait window indicating the commandbutton class is not a command button because the 'c' in commandbutton is lowercase. Replace the lowercase "c" with an uppercase "C," and it works properly.

Replace:
   IF ThisForm.Controls(i).Class = "commandbutton" THEN
				
With:
   IF ThisForm.Controls(i).Class = "Commandbutton" THEN
				

Additional query words: VFoxWin kbdse VFoxMac

Keywords: KB161359