Re: Cancelling Esc key being pressed

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#3073

From: Remy Lebeau (TeamB)
Date: Mon, 25 Sep 2006 17:32

33 lines
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"Russell Allen" <russell.allen@bt.com> wrote in message
news:4517e850$1@newsgroups.borland.com...

> The problem I'm having - when a piece of code elsewhere pops up
> a dialog box with a Cancel option, if the user presses "Esc" to cancel
> the dialog box, not only is the dialog box cancelled, the onkeyup event
> is being fired off as well!

    void __fastcall TForm1::FormKeyUp(TObject *Sender, char &Key)
    {
        if( Key == VK_ESCAPE )
            Key = 0;
    }


> Can I include a line to stop the Esc key press firing other events

No.

> can I maybe unhook the OnKeyUp event handler before the dialog
> and rehook it after the dialog box?

    void __fastcall TForm1::Button1Click(TObject *Sender)
    {
        this->OnKeyUp = NULL;
        MessageDlg("Proceed?", mtConfirmation, TMsgDlgButtons() << mbYes <<
mbCancel, 0);
        this->OnKeyUp = FormKeyUp;
    }


Gambit

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Subject: Re: Cancelling Esc key being pressed
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