Index: gui/components/gui_numberinput.cc
===================================================================
--- gui/components/gui_numberinput.cc	(リビジョン 3478)
+++ gui/components/gui_numberinput.cc	(作業コピー)
@@ -132,10 +132,28 @@
 		return (wrapping  &&  value==max_value) ? min_value : max_value;
 	}
 
+	if(event_get_last_control_shift()==1) {
+		return clamp( value+1, min_value, max_value );
+	}
+
 	switch( step_mode ) {
 		// automatic linear
 		case AUTOLINEAR:
-			return clamp( value+max(1,(max_value-min_value)/100), min_value, max_value );
+		{
+			int n = 0;
+			int v = value;
+			while(abs(v)>=1000) {
+				v /= 10;
+				n++;
+			}
+			v=1;
+			while(n>0) {
+				v *= 10;
+				n--;
+			}
+			sint32 delta = event_get_last_control_shift()==2 ? v*10 : v;
+			return clamp( value+delta, min_value, max_value );
+		}
 		// power of 2
 		case POWER2:
 		{
@@ -160,7 +178,8 @@
 		}
 		// default value is step size
 		default:
-			return clamp( ((value+step_mode)/step_mode)*step_mode, min_value, max_value );
+			sint32 delta = event_get_last_control_shift()==2 ? step_mode*10 : step_mode;
+			return clamp( ((value+delta)/step_mode)*step_mode, min_value, max_value );
 	}
 }
 
@@ -173,10 +192,28 @@
 		return (wrapping  &&  value==min_value) ? max_value : min_value;
 	}
 
+		if(event_get_last_control_shift()==1) {
+			return clamp( value-1, min_value, max_value );
+		}
+
 	switch( step_mode ) {
 		// automatic linear
 		case AUTOLINEAR:
-			return clamp( value-max(1,(uint32)(max_value-min_value)/100u), min_value, max_value );
+		{
+			int n = 0;
+			int v = value;
+			while(abs(v)>=1000) {
+				v /= 10;
+				n++;
+			}
+			v=1;
+			while(n>0) {
+				v *= 10;
+				n--;
+			}
+			sint32 delta = event_get_last_control_shift()==2 ? v*10 : v;
+			return clamp( value-delta, min_value, max_value );
+		}
 		// power of 2
 		case POWER2:
 		{
@@ -201,7 +238,8 @@
 		}
 		// default value is step size
 		default:
-			return clamp( value-step_mode, min_value, max_value );
+			sint32 delta = event_get_last_control_shift()==2 ? step_mode*10 : step_mode;
+			return clamp( value-delta, min_value, max_value );
 	}
 }
 
@@ -275,7 +313,7 @@
 				case SIM_KEY_UP:
 				case SIM_KEY_DOWN:
 						// next/previous choice
-						new_value = (ev->ev_code==SIM_KEY_UP) ? get_prev_value() : get_next_value();
+						new_value = (ev->ev_code==SIM_KEY_DOWN) ? get_prev_value() : get_next_value();
 			}
 			if(  call_textinp  ) {
 				event_t ev2 = *ev;