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List:       kde-usability
Subject:    Proposal to change mouse click handling
From:       Art Carney <greencarrots () nospammail ! net>
Date:       2004-07-05 11:21:16
Message-ID: 200407050621.16332.greencarrots () nospammail ! net
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As everyone on this list knows, KDE follows the superior HIG standard of 
single-click consistently in every application. However, as everyone also 
knows, after flirting with single-click in Win98/NT 4, Microsoft reverted 
back to the rsi creating double-click. 

This shouldn't be a problem for users except that many of them have grown so 
accustomed to double-clicking (thanks to bad precedents in the Mac and 
Windows worlds) that they do it everywhere. You've seen these people, they 
double-click on Web links, toolbar icons, etc.

Most users eventually come to realize that a hand cursor indicates a 
single-click action but until that day comes (if it ever does) most of them 
double-click a few times until they learn not to.

To ease this learning experience, Windows includes an option in its mouse 
configuration panel that "deletes" extra clicks if the desktop is in 
single-click mode. In other words, it ignores a second click if it is 
inputted on an icon element.

I propose that
* Double-click deletion be added to kdelibs
* That it be enabled by default if single-click is active
* That it can be disabled through the mouse config box

Not only will this ease the learning process for users, but it can also 
increase stability since some devices can hang if you try to mount them in 
rapid succession. Double-click deletion will also increase the perceived 
speed of the system since uneeded instances of a program will not be started 
if the user accidentally double-clicks an icon.
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