[kde-doc-english] [kscreengenie] /: Abort On-Click on non-left clicks

[Boudhayan Gupta]

On 7 July 2015 at 21:52, Alexander Potashev <aspotashev at gmail.com> wrote:
> 2015-07-07 19:04 GMT+03:00 Boudhayan Gupta <me at baloneygeek.com>:
>> +                               <para>Enabling the <guilabel>On Click</guilabel> checkbox overrides the delay. When this checkbox is enabled, pressing the <guibutton>Take New Screenshot</guibutton> (<keycombo action="simul">&Ctrl;<keycap>N</keycap></keycombo>) button hides the &kscreengenie; window and changes the mouse cursor to a crosshair. The screenshot is captured when the mouse is left-clicked, or aborted if the mouse is right-clicked. Note that you cannot interact with the desktop using the mouse while the cursor is a crosshair, but you can use the keyboard.</para>
>
> Hi Boudhayan,
>
> You are not stating the behaviour when middle or other mouse button is
> clicked. And what happens if I roll the mouse wheel?
>
> --
> Alexander Potashev

Hi Alexander,

The technical detail of the implementation is like this: if it's
XCB_BUTTON_MASK_1 (which is left-click), take the shot, for any other
button abort. It's like this because XCB_BUTTON_MASKs differ from
mouse to mouse - i.e., on a two button mouse the right click is
XCB_BUTTON_MASK_2, while on a three-button mouse it is
XCB_BUTTON_MASK_3 with MASK_2 being the middle button.

Scrolling the mouse wheel also generates button press events, so that
also aborts the shot.

I'm not sure how to put so much information into a document meant for
users, so if you want to rephrase it, go ahead.