Microsoft KB Archive/143001

= PRB: Child Property Doesn't Reflect Parent Container Property =

Article ID: 143001

Article Last Modified on 9/30/2003

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APPLIES TO


 * Microsoft Visual FoxPro 3.0 Standard Edition
 * Microsoft Visual FoxPro 3.0b Standard Edition

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This article was previously published under Q143001



SYMPTOMS
If you set a child object's property value equal to a parent container's value and then change the value for the parent container's property, the new value is not reflected by the child object.



CAUSE
Expressions placed in the child object's property sheet are evaluated once.



RESOLUTION
If you change the parent container's property, you can force a reevaluation of the child object's property by clicking into the property of the child on the property sheet and pressing ENTER or by clicking the checkmark in the child object's property sheet.

When you run the form, Visual FoxPro will evaluate all expressions once to initialize the altered properties of every object. The exceptions to this are the DynamicXX properties of the Grid column object. These are evaluated dynamically when the grid is refreshed.



STATUS
This behavior is by design.



Steps to Demonstrate Behavior

 * 1) Create a new form.
 * 2) Place an object such as a command button on the form.
 * 3) In the Property sheet, set the property of the object's FontSize to Thisform.FontSize. After you press ENTER, the child object should pick up the value from the parent container.
 * 4) Change the parent container's FontSize value. Note that the child does not pick up the new value until you force the form to reevaluate the parent container's value.

Additional query words: VFoxWin dynamic evaluate

Keywords: KB143001

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