COXMaskedEdit::OnValidate

COXMaskedEdit::OnValidate

Class Members | Overview

virtual BOOL OnValidate()

Return Value

TRUE if the current text passes validation, otherwise FALSE.

Remarks

This virtual function gets called when the control loses focus, unless the OMMEN_VALIDATE notification handler of the parent decides otherwise (see below). Use in a COXMaskedEdit derived class to perform user validation. The default implementation returns TRUE.

If this method returns FALSE, the virtual method ValidationError will be called. The default behavior of COXMaskedEdit::ValidationError is to simply sound a message beep.

There is another way to provide data validation that can be used irregardless of the control being used as a base class.

When the control loses focus it will send a WM_NOTIFY notification to its parent passing the ID of the control in wParam and a pointer to a MENMHDR structure in lParam. The hdr.code member of the structure will contain OXMEN_VALIDATE.

There are two BOOL members of the MENMHDR structure you can modify to return information on what action to take:

See also: ValidationError