GTK already produces corresponding GDK_BUTTON_PRESS events
alongside 2BUTTON and 3BUTTON_PRESS events. The 2BUTTON and
3BUTTON_PRESS events were incorrectly being interpreted and
passed to guests as button release events.

Resolves: https://gitlab.com/qemu-project/qemu/-/issues/558
Signed-off-by: K. Lange <klange@toaruos.org>
---
 ui/gtk.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ui/gtk.c b/ui/gtk.c
index a8567b9ddc..8675ae76fa 100644
--- a/ui/gtk.c
+++ b/ui/gtk.c
@@ -958,6 +958,10 @@ static gboolean gd_button_event(GtkWidget *widget, GdkEventButton *button,
         return TRUE;
     }
 
+    if (button->type == GDK_2BUTTON_PRESS || button->type == GDK_3BUTTON_PRESS) {
+        return TRUE;
+    }
+
     qemu_input_queue_btn(vc->gfx.dcl.con, btn,
                          button->type == GDK_BUTTON_PRESS);
     qemu_input_event_sync();
-- 
2.25.1