KeyPress Event & MouseDown event

[Trevor Fairchild]

I'm writing a program that is designed for quick navigation using
specific buttons on the keyboard. In doing this, I have added a
KeyPress event for every control on the form to intercept the key
pressed and pass it to a standard subroutine that identifies what
action should be taken.

Unfortunately, I have a web-browser contol on the form and the
webbrowser does not include a KeyPress event.

I need some way to intercept keypress and mousedown events for the
webbrowser - my thought was to put a control that has these events on
top of the webbrowser, but I have been unable to find a control that
can be transparent while also sitting on top of a webbrowser - the
imagebox control will be transparent, but for some reason it always
falls behind the webbrowser even when I force it to the Front.

my second thought is to trap key press and mouse click events from
within the html pages I am showing in the webbrowser and then passing
them along to vb - but I don't have the slightest clue how to do that,
or even if it can be done.

Does anyone have any ideas on a soltion to this problem?

any help would be appreciated.

thanks.

Trevor Fairchild

[Tzargoth]

Hmmm ... I found that if a text or textarea field had data in it, that the user can still click through the locking div. To get around this, you need to override the document onmouseup event and change focus to a dummy field (off page -- set it in a 0 size div, with 0 size). Use something like this:

<SCRIPT ID=clientEventH andlersJS LANGUAGE=javasc ript><!--
function document_onmous eup()
{
return CheckLock();
}
//-->
</SCRIPT>
<SCRIPT LANGUAGE=javasc ript FOR=document EVENT=onmouseup ><!--
document_onmous eup();
//-->
</SCRIPT>

In CheckLock:

if (IsLocked)
{
document.getEle mentById("Dummy ").focus();
return false;
}
else
{
return true;
}

Users can still select text, but not modify it. I still use the locking div because when the user clicks into a field, the cursor is shown briefly ... with the locking div, no field can be selected, except those that have values shown in them.

[Zach]

...or you could skip all that work, and fix the one mistake the person made in the first post.

This will work, if all you want to do is block access to everything in the page. It will work 100% of the time, and actually in any of todays browsers also.

 
<img src="http://sportsforum.ws/blank.gif" 
 
style="width:100%;height:100%;position:absolute;top:0;left:0;zIndex:99999;" 
 
id="fsw">
 
 

Done :)

[Zach]

Well, this thing is bound and determined to break up left - so obviously, put it together.

This also allows for you to easily change if the page is reachable or not




document.getEle mentById('fsw') .style.display= "none"

now the page would be reachable





document.getEle mentById('fsw') .style.display= ""

now it wouldnt