--- trunk/RomCheater/Docking/UI/UIMemoryViewer.cs	2012/05/31 08:38:16	202
+++ trunk/RomCheater/Docking/UI/UIMemoryViewer.cs	2012/05/31 09:31:57	206
@@ -43,7 +43,21 @@
 
             txtAddresses.MouseWheel += new MouseEventHandler(txtAddresses_MouseWheel);
             txtData.MouseWheel += new MouseEventHandler(txtData_MouseWheel);
-        } 
+        }
+
+        private void GetFirstNonZeroByte()
+        {
+            if (!DesignMode)
+            {
+                Sojaner.MemoryScanner.ProcessMemoryReader reader = new Sojaner.MemoryScanner.ProcessMemoryReader();
+                reader.ReadProcess = this.AcceptedProcess;
+                reader.OpenProcess();
+                uint addr = 0;
+                reader.ReadFirstNonZeroByte(MemoryStart, MemorySize, out addr);
+                GotoAddress(addr);
+            }
+        }
+
         #region IProcessConfig Members
         private Process _AcceptedProcess;
         public Process AcceptedProcess
@@ -54,6 +68,8 @@
                 _AcceptedProcess = value;
                 update_timer.Enabled = (value != null);
                 UpdateEnabled = update_timer.Enabled;
+                if (value != null)
+                    GetFirstNonZeroByte();
             }
         }
         #endregion
@@ -61,8 +77,8 @@
         public IConfigPlugin AcceptedPlugin { get; set; }
         #endregion
         #region IAcceptsMemoryRange members
-        private uint MemoryStart { get { return 0; } }
-        private uint MemorySize { get { return int.MaxValue; } }
+        public uint MemoryStart { get { return 0; } }
+        public uint MemorySize { get { return int.MaxValue; } }
         #endregion
         public void GotoTop() { this.CURRENT_TOP_ADDR = 0; }
         public void GotoBottom() { uint size = MemorySize; this.CURRENT_TOP_ADDR = (uint)((size - 1) - max_ram_view); }
@@ -308,7 +324,7 @@
             uint ORIGINAL_ADDR = this.CURRENT_TOP_ADDR;
 
             ////if (e.Type == ScrollEventType.EndScroll) return;
-            uint size = max_ram_view;
+            //uint size = max_ram_view;
 
             bool haveModifier = false;
             switch (e.Modifiers)
@@ -320,7 +336,7 @@
                             this.CURRENT_TOP_ADDR = 0; //NonHandledKeysAreBeingPressed = false; 
                             break;
                         case Keys.End:
-                            this.CURRENT_TOP_ADDR = (uint)((size - 1) - max_ram_view); //NonHandledKeysAreBeingPressed = false;
+                            this.CURRENT_TOP_ADDR = (uint)((MemorySize - 1) - max_ram_view); //NonHandledKeysAreBeingPressed = false;
                             break;
                         default:
                             //NonHandledKeysAreBeingPressed = true;
@@ -334,13 +350,27 @@
                 switch (e.KeyCode)
                 {
                     case Keys.Up:
-                        this.CURRENT_TOP_ADDR -= (uint)small_scroll_change; //NonHandledKeysAreBeingPressed = false;
+                        if (this.CURRENT_TOP_ADDR == 0 && (this.CURRENT_TOP_ADDR - small_scroll_change > this.CURRENT_TOP_ADDR))
+                        {
+                            this.CURRENT_TOP_ADDR = ORIGINAL_ADDR;
+                        }
+                        else
+                        {
+                            this.CURRENT_TOP_ADDR -= (uint)small_scroll_change; //NonHandledKeysAreBeingPressed = false;
+                        }
                         break;
                     case Keys.Down:
                         this.CURRENT_TOP_ADDR += (uint)small_scroll_change; //NonHandledKeysAreBeingPressed = false;
                         break;
                     case Keys.PageUp:
-                        this.CURRENT_TOP_ADDR -= (uint)(large_scroll_change); //NonHandledKeysAreBeingPressed = false;
+                        if (this.CURRENT_TOP_ADDR == 0 && (this.CURRENT_TOP_ADDR - large_scroll_change > this.CURRENT_TOP_ADDR))
+                        {
+                            this.CURRENT_TOP_ADDR = ORIGINAL_ADDR;
+                        }
+                        else
+                        {
+                            this.CURRENT_TOP_ADDR -= (uint)(large_scroll_change); //NonHandledKeysAreBeingPressed = false;
+                        }
                         break;
                     case Keys.PageDown:
                         this.CURRENT_TOP_ADDR += (uint)(large_scroll_change); //NonHandledKeysAreBeingPressed = false;
@@ -352,8 +382,8 @@
             }
             if (this.CURRENT_TOP_ADDR < MemoryStart) this.CURRENT_TOP_ADDR = MemoryStart;
             //if (this.CURRENT_TOP_ADDR >= VTLB_VADDR_SIZE) this.CURRENT_TOP_ADDR = (size - 1) - max_ram_view;
-            if (this.CURRENT_TOP_ADDR + max_ram_view >= MemorySize) this.CURRENT_TOP_ADDR = (size - 1);
-
+            if (this.CURRENT_TOP_ADDR + max_ram_view >= MemorySize) this.CURRENT_TOP_ADDR = (MemorySize - max_ram_view);
+            
             //this.UpdateEnabled = reenable;
         }
 
@@ -410,7 +440,7 @@
 
             this.UpdateMaxRamView();
             uint ORIGINAL_ADDR = this.CURRENT_TOP_ADDR;
-            uint size = MemorySize;
+            //uint size = MemorySize;
             if (e.Type == ScrollEventType.EndScroll) return;
 
             switch (e.Type)
@@ -452,7 +482,7 @@
             if (this.CURRENT_TOP_ADDR < 0) this.CURRENT_TOP_ADDR = 0;
             //if (this.CURRENT_TOP_ADDR >= VTLB_VADDR_SIZE) this.CURRENT_TOP_ADDR = VTLB_VADDR_SIZE - max_ram_view;
             //if (this.CURRENT_TOP_ADDR < 0 || this.CURRENT_TOP_ADDR >= VTLB_VADDR_SIZE) this.CURRENT_TOP_ADDR = ORIGINAL_ADDR;
-            if (this.CURRENT_TOP_ADDR + max_ram_view >= MemorySize) this.CURRENT_TOP_ADDR = (size - 1) - max_ram_view;
+            if (this.CURRENT_TOP_ADDR + max_ram_view >= MemorySize) this.CURRENT_TOP_ADDR = MemorySize - max_ram_view;
             //this.UpdateEnabled = reenable;
             //isScrolling = false;
         }