Slide 9.6: Line-by-line anatomy of Menu.c (cont.) (cont.)   Slide 9.8: Line-by-line anatomy of Menu.c (cont.)   Home

Line-by-line Anatomy of Menu.c (Cont.)

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FldDelete( fld, 0, FldGetTextLength( fld ) );
The function UInt16 FldGetTextLength( const FieldType *fldP ) returns the length in bytes of the field's text.

fldP: Pointer to a field object (FieldType structure)

FldCopy( fld );
This function void FldCopy( const FieldType *fldP ) copies the current selection to the text clipboard.

fldP: Pointer to a field object (FieldType structure)

FldCut( fld );
This function void FldCut( FieldType *fldP ) copies the current selection to the text clipboard, deletes the selection from the field, and redraws the field.

fldP: Pointer to a field object (FieldType structure)

FldPaste( fld );
This function void FldPaste( FieldType *fldP ) replaces the current selection in the field, if any, with the contents of the text clipboard.

fldP: Pointer to a field object (FieldType structure)

FldSetSelection( fld, 0, FldGetTextLength( fld ) );
This function void FldSetSelection( FieldType *fldP, UInt16 startPosition, UInt16 endPosition ) sets the current selection in a field and highlights the selection if the field is visible.

• fldP: Pointer to a field object (FieldType structure)
• startPosition: Starting offset of the character range to highlight, given as a byte offset into the field's text
• endPosition: Ending offset of the character range to highlight