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Make scroll events work again in GTK3.

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Apparently, if you don't specify GDK_SMOOTH_SCROLL_MASK in a widget's
event mask, then you don't receive "scroll_event" signals at all, even
of the non-smooth variety that was all GTK2 had. Hence, neither mouse
scroll wheels nor touchpad scroll gestures seem to generate any
response.

Adding GDK_SMOOTH_SCROLL_MASK brings the old scroll events back again,
so this is at least no worse than GTK2 was. But in GTK3 we _ought_ to
be able to do better still, by supporting smooth scrolling from
touchpads; this commit doesn't do that.
This commit is contained in:
Simon Tatham 2015-09-25 14:09:57 +01:00
parent 5bb3334d0e
commit 0f759e4e85
1 changed files with 5 additions and 1 deletions
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6
unix/gtkwin.c
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@ -4933,7 +4933,11 @@ int pt_main(int argc, char **argv)
gtk_widget_add_events(GTK_WIDGET(inst->area),
GDK_KEY_PRESS_MASK | GDK_KEY_RELEASE_MASK |
GDK_BUTTON_PRESS_MASK | GDK_BUTTON_RELEASE_MASK |
GDK_POINTER_MOTION_MASK | GDK_BUTTON_MOTION_MASK);
GDK_POINTER_MOTION_MASK | GDK_BUTTON_MOTION_MASK
#if GTK_CHECK_VERSION(3,4,0)
| GDK_SMOOTH_SCROLL_MASK
#endif
);
{
extern const char *const *const main_icon[];