Commit 45288343 authored by Jim Blandy's avatar Jim Blandy

Doc fix.

parent 350273a4
......@@ -165,11 +165,16 @@ struct input_event {
The modifiers applied to mouse clicks are rather ornate. The
window-system-specific code should store mouse clicks with
up_modifier or down_modifier set; the window-system independent
code turns all up_modifier events into either drag_modifier or
click_modifier. The click_modifier has no written representation
in the names of the symbols used as event heads, but it does appear
in the Qevent_symbol_components property of the event heads. */
up_modifier or down_modifier set. Having an explicit down modifier
simplifies some of window-system-independent code; without it, the
code would have to recognize down events by checking if the event
is a mouse click lacking the click and drag modifiers.
The window-system independent code turns all up_modifier events
bits into either drag_modifier or click_modifier events. The
click_modifier has no written representation in the names of the
symbols used as event heads, but it does appear in the
Qevent_symbol_components property of the event heads. */
enum {
up_modifier = 1, /* Only used on mouse buttons - always
turned into a click or a drag modifier
......
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