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Re: overriding paste

On Apr 30, 2008, at 5:55 AM, Sam Mauney wrote:

I am currently calling a function where kHICommandPaste is tripped that uses Pasteboard
functions so I can filter the pasted contents into an edit control.

I am having trouble overrriding or suppressing the normal paste. So if I paste in the digit "2"
the result in the edit control will be "22".

What is the best way to override the normal paste so I can prevent this from happening?

Look into the Carbon events

  {kEventClassTextInput, kEventTextInputUnicodeForKeyEvent}

for pre-10.4, or

  {kEventClassTextField, kEventTextShouldChangeInRange}

for 10.4 and later. If you install these on the edit control that you want to filter, you can control which characters are accepted by the control. It's a better solution than overriding paste in general.

steve

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