[dia: 1/2] Update disp_callbacks.c

[Zander <zbrown src gnome org>]

commit c07551335675e8ea1a0326908c4fefe117890b9f
Author: nsynet <nsynet hotmail com>
Date:   Thu Dec 12 05:04:17 2019 +0000

    Update disp_callbacks.c
    
    To zoom in, Dia user need to press the CTRL+SHIFT+ "+" keys (3 keys), but some people can't understand 
why the CTRL+"+" key (2 keys)not works . I tested with Chrome and Firefox, find both of them support the 2 
keys and 3 keys way, so I add the 2 keys way for Dia,to avoid user confused.

 app/disp_callbacks.c | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/app/disp_callbacks.c b/app/disp_callbacks.c
index 3bf12515..41206cf3 100644
--- a/app/disp_callbacks.c
+++ b/app/disp_callbacks.c
@@ -999,6 +999,7 @@ ddisplay_canvas_events (GtkWidget *canvas,
                break;
               case GDK_KP_Add:
               case GDK_plus:
+              case GDK_equal:
                 ddisplay_zoom_middle(ddisp, M_SQRT2);
                 break;
               case GDK_KP_Subtract: